Research Quarterly for Exercise and Sport, Mar 24, 2022
Purpose: Despite the growing works analyzing exercise-induced thermoregulatory adjustments throug... more Purpose: Despite the growing works analyzing exercise-induced thermoregulatory adjustments through thermography, the skin temperature (Tsk) response of the same muscle groups underwent to different exercise demands has not been investigated. This study analyzed the behavior of Tsk of the same muscle groups when exercised with different demands in rowing. Methods: Eighteen men underwent three performance tests on a rowing ergometer: whole-body 2,000 m test (RTWB), upper-body (RTUB), and lower-body (RTLB) tests. In each condition, thermograms were recorded before (pre), immediately after test (post), and at 10 (REC10), 20 (REC20), and 30 (REC30) minutes post-exercise recovery. Tsk was measured at the pectoral (control body region), upper back, quadriceps, brachial biceps, and forearm. Results: Pectoral-Tsk reduced comparably in response to all testing conditions (p < .05). Upper back-Tsk decreased post (p < .001) and returned to baseline in the RTUB (REC10, p = 1.0) and RTWB (REC30, p = .128), while remained reduced in the RTLB (p < .001). Quadriceps-Tsk reduced post (p < .05) and returned to baseline in the RTWB and RTLB at REC10 (p = 1.0), remaining reduced in the RTUB during recovery (p < .05). Regarding the upper limbs, Tsk increased more markedly in the RTUB versus RTWB during the recovery period (p < .05); in the RTLB, biceps-Tsk remained below baseline over time (p < .05), whereas the forearm-Tsk was restored at REC10 (p = 1.0). Conclusion: Manipulating the muscle groups involved in rowing alters the Tsk response within equal ROI. Exercise-induced Tsk changes can reflect local hemodynamic and thermoregulatory adjustments.
International Journal of Environmental Research and Public Health
Infrared thermography (IRT) is a technology easy to use for clinical purposes as a pre-diagnostic... more Infrared thermography (IRT) is a technology easy to use for clinical purposes as a pre-diagnostic tool for many health conditions. However, the analysis process of a thermographic image needs to be meticulous to make an appropriate decision. The adipose tissue is considered a potential influence factor in the skin temperature (Tsk) values obtained by IRT. This study aimed to verify the influence of body fat percentage (%BF) on Tsk measured by IRT in male adolescents. A total of 100 adolescents (16.79 ± 0.97 years old and body mass index of 18.41 ± 2.32 kg/m²) was divided into two groups through the results of a dual-energy X-ray absorptiometry analysis: obese (n = 50, %BF 30.21 ± 3.79) and non-obese (n = 50, %BF 11.33 ± 3.08). Thermograms were obtained by a FLIR T420 infrared camera and analyzed by ThermoHuman® software version 2.12, subdividing the body into seven regions of interest (ROI). The results showed that obese adolescents presented lower mean Tsk values than the non-obese...
Revista Brasileira de Cineantropometria & Desempenho Humano
Infrared thermography (IRT) has been used to assess skin temperature (Tsk), especially during the... more Infrared thermography (IRT) has been used to assess skin temperature (Tsk), especially during the COVID-19 pandemic, as an important tool in medical screening not only of the general population, but also of young athletes. However, the subcutaneous adipose tissue can act as an insulator when the Tsk is assessed by IRT, modifying the normal Tsk data and leading to their misinterpretation. Considering that the body mass index (BMI) is an important predictor of obesity, the objective of this study was to verify if the Tsk measured by IRT is affected by the BMI in adolescents. A preliminary study was carried out being four participants intentionally selected, all 16 years old, each one classified in a different BMI range according to the criteria of the World Health Organization for the adolescent population: underweight, healthy weight, overweight and obesity. Four thermograms of each participant were recorded and the ThermoHuman® software was used to evaluate 82 regions of interest (R...
Objectives: Verify the validity of electrical bioimpedance (BIA) and the skinfold method in estim... more Objectives: Verify the validity of electrical bioimpedance (BIA) and the skinfold method in estimating the percentage of body fat (% BF) in middle-aged and elderly women, using dual emission X-ray absorptiometry (DXA) as a reference method. Material and methods: The sample consisted of 106 volunteers (middle age, n = 58 [51.3 ± 4.9 years] and elderly, n = 48 [67.2 ± 5.8 years]). The volunteers were submitted to anthropometric assessments and the % BF was subsequently calculated using the Jackson and Pollock 7 skinfold protocol (7SF). The % BF was also measured using BIA and DXA. Pearson’s correlation, Bland and Altman method, effect size and repeated-measure t-test were used to test the hypotheses. Results: Although there is a moderate positive relationship between the methods evaluated for middle-aged women (DXA vs 7SF, r = 0.67; DXA vs BIA, r = 0.62) and moderate to strong for the elderly (DXA vs 7SF, r = 0.57; DXA vs BIA, r = 0.75) (p ≤ 0.05 in all analyzes), the agreement betwee...
Revista Brasileira de Obesidade, Nutrição e Emagrecimento, 2020
Introdução: As doenças cardiovasculares são as principais causas de óbitos no Brasil, sendo a sín... more Introdução: As doenças cardiovasculares são as principais causas de óbitos no Brasil, sendo a síndrome metabólica definida pela presença de obesidade abdominal e pelo menos mais dois fatores de risco cardiovasculares. Objetivo: Identificar a prevalência de Síndrome Metabólica (SM), bem como sua associação com fatores de risco cardiovascular em professores. Métodos: Participaram do estudo 150 docentes, com idade média de 40±11 anos. Para classificação da SM, foram avaliadas circunferência de cintura, triglicerídeos, lipoproteína de alta densidade (HDL-C), pressão arterial e glicemia. A distribuição dos dados foi verificada através do teste Kolmogorov-Smirnov. Posteriormente os testes t independente e Mann-Whitney foram utilizados para comparar as variáveis entre os grupos sem SM e com SM. Regressão de Poisson e razão de prevalência foram utilizadas para determinar a associação, bem como a magnitude desta entre a SM e demais variáveis. Adotou-se um nível de significância de 5%. Result...
Resumo — Este estudo analisou o perfil de simetria térmica de membros superiores e inferiores de ... more Resumo — Este estudo analisou o perfil de simetria térmica de membros superiores e inferiores de nadadores de elite. Foram obtidos termogramas de 27 nadadores, sendo nove mulheres (idade: 18.0 ± 1.0 anos, massa corporal: 58.9 ± 5.4 kg, estatura: 168.0 ± 2.1 cm) e 18 homens (idade: 19.5 ± 1.2 anos, massa corporal: 73.7 ± 6.3 kg, estatura: 174.6 ± 6.8 cm). A temperatura irradiada da pele (TIP) foi mensurada nas mãos, antebraços, braços, coxas, pernas e ombros. O teste T independente indicou similaridade térmica entre os lados direito e esquerdo em todas regiões corporais analisadas (p > 0.05), tanto em homens quanto em mulheres. As diferenças térmicas bilaterais médias foram consideradas clinicamente aceitáveis em todas regiões corporais (≤ 0.49 °C), com tamanhos de efeito variando entre insignificante e pequeno. Em conclusão, nadadores de alto rendimento apresentaram simetria térmica contralateral nos membros superiores e inferiores, sugerindo uma avaliação termográfica normal ind...
RICYDE. Revista internacional de ciencias del deporte, 2021
The purpose of this study was to compare the effect of the glycaemic index of breakfast on metabo... more The purpose of this study was to compare the effect of the glycaemic index of breakfast on metabolic parameters and performance of cyclists with different types of hydration (water or isotonic beverage). Twelve male recreational cyclists participated in four experimental trials where they consumed either a high glycaemic index (HGI) or low glycaemic index (LGI) meal, 30 min before exercise on a cycle ergometer. Exercise was performed at 70% maximal oxygen uptake for 90 min followed by a 6 km performance. During each trial, 3 mL.kg-1 body mass of either water or isotonic beverage was provided. The postprandial glycaemic response and areas under the blood glucose curve 30 min after ingestion were higher after the consumption of the HGI meals than that after the consumption of the LGI meals. The glycaemic response and carbohydrate oxidation during the trials with isotonic beverage consumption were higher than that in trials with water consumption during exercise (p<0.05). There was ...
Summary Background: The quality of the consumed diet is important for the improvement in performa... more Summary Background: The quality of the consumed diet is important for the improvement in performance during training and the achievement of positive results on competitions. The objective of study was to investigate the breakfast practices, and nutritional strategies used before and during training and competition of cyclists participating in the biggest mountain biking competition of Brazil. Methods: The participants (n = 146) were asked to complete a questionnaire during the distribution of kits on the day before the competition. The questionnaire included 13 questions about the participants’ characteristics, pre-training and pre-competition usual breakfast and meal consumption, and systemic or gastrointestinal symptoms during exercise. All statistical analyses were conducted using SigmaStat 3.1 software. Results: 97.54% of participants consumed breakfast pre-training, while all participants consumed a pre-competition breakfast. After the analyses, banana and bread were the most c...
Is relative fat mass a better indicator of high blood pressure levels when compared to other anth... more Is relative fat mass a better indicator of high blood pressure levels when compared to other anthropometric indexes? ¿Es la masa grasa relativa un mejor indicador de los niveles de presión arterial alta en comparación con otros índices antropométricos?
Journal of strength and conditioning research, Jan 22, 2018
da Silva, CD, Machado, G, Fernandes, AA, Teoldo, I, Pimenta, EM, Marins, JCB, and Garcia, ES. Mus... more da Silva, CD, Machado, G, Fernandes, AA, Teoldo, I, Pimenta, EM, Marins, JCB, and Garcia, ES. Muscle damage-based recovery strategies can be supported by predictive capacity of specific global positioning system accelerometry parameters immediately after soccer match-load. J Strength Cond Res XX(X): 000-000, 2018-Soccer match-load can be linked to recovery kinetic markers. However, match variability hinders the magnitude of relationship between parameters of interest. Therefore, we examined the correlation between 21 global positioning system accelerometry (GPS-A) parameters and changes in serum creatine kinase (CK) concentrations, muscle soreness (MS), and perceptive recovery quality (PRQ) assessed at baseline (1 h before) and post (0 minute, 2, 4, and 24 hours) a standardized 90-minute match-simulation in 12 university players. Global positioning system accelerometry (15 Hz) data were tested as manufacturer and configurable thresholds. Four GPS-A parameters showed moderate to very...
Diabetes Mellitus Type 2 affects the current society, and it is associated with overweight and ob... more Diabetes Mellitus Type 2 affects the current society, and it is associated with overweight and obesity. The exercise has demonstrated favorable results in anthropometric parameters and gain joint flexibility and body mobility in these people. The objective was to analyze the interference of an exercise program on anthropometric measurements, flexibility and body mobility in type 2 diabetics. This is a longitudinal study realized with 14 type 2 diabetic patients with a mean age of 55 ± 9 years, from both genders, separated into groups of aerobic exercise (n = 8) and resistance (n=6). The body mass index, waist circumference, abdominal circumference, hip circumference, waist/hip ratio, body fat percentage, coxofemoral flexibility and body mobility were evaluated before and after a period of 10 weeks of aerobic or resistance exercise with weekly frequency of 3 days. For data analysis, we applied the paired t-test (pre x post exercise) and independent t-test (aerobic group x resistance ...
Fundamento: A hipertensão arterial sistêmica é uma doença multifatorial, de alta prevalência na p... more Fundamento: A hipertensão arterial sistêmica é uma doença multifatorial, de alta prevalência na população brasileira e mundial e constitui o principal fator de risco tratável para as doenças cardiovasculares. Objetivos: Verificar a prevalência, de acordo com o sexo, dos comportamentos de risco e das comorbidades associadas à hipertensão nos pacientes atendidos no Centro Hiperdia de Viçosa, MG Métodos: Estudo transversal que avaliou 172 prontuários de hipertensos maiores de 18 anos, não diabéticos, encaminhados ao Centro Hiperdia de Viçosa. Entre os dados avaliados a partir de análise de prontuários estão os fatores e comportamentos de risco cardiovascular como sobrepeso/obesidade, dislipidemia, tabagismo, etilismo e sedentarismo, bem como condições clínicas ou comorbidades associadas à HAS. Para análise dos dados foram empregados os testes de Kolmogorov-Smirnov, o teste de Mann-Whitney e o teste de correlação de Pearson. O nível de significância adotado foi de 5%. Resultados: Observ...
INTRODUCTION: There is no doubt that core or central temperature has a direct relationship with t... more INTRODUCTION: There is no doubt that core or central temperature has a direct relationship with the exercise intensity. Some studies focused on measuring the central thermal response. However it is also interesting to investigate the thermal response of skin temperature after exercising. Between many reasons, it could provide important information about the recovery status -making possible to assess when the athletes are completely recovered as well as determining the influence of exercise on skin temperature. OBJECTIVE: The purpose of our study is to determine by Infrared Thermography (IRT) the evolution of skin temperature for muscles and joints areas after strength training, besides to evaluate the thermal asymmetries. METHODS: A total of fourteen physical active males (age: 21.44±2.64 years; height: 1.78±0.05 m; weight: 73.23±7.63 Kg), exercising at least 3 times per week, took part of the study. They did not report any diseases, consumption of medicaments, drugs, alcohol or tob...
Resposta térmica da pele ao exercício em remoergômetro de alta versus moderada intensidade em hom... more Resposta térmica da pele ao exercício em remoergômetro de alta versus moderada intensidade em homens fisicamente ativos PALAVRAS CHAVE: Termografia. Temperatura cutânea. Regulação da temperatura corporal. RESUMO Comparou-se a resposta da temperatura da pele (T P) entre o exercício intenso de curta duração e moderado prolongado. Dezoito homens realizaram o teste de 2000 m (T 2000m) e um protocolo de exercício moderado (45 minutos) em remoergômetro. Termogramas foram obtidos antes e após os protocolos, e com 10, 20 e 30 minutos de recuperação. Utilizou-se ANOVA Two-Way com post hoc de Tukey para comparar a T P. No peitoral a T P reduziu após o T 2000m (p < .001) e exercício moderado (p = .003) e retornou ao baseline apenas no moderado (p = .489). Na região dorsal superior (DS) a T P reduziu após os exercícios (p < .001) e retornou ao baseline 30 minutos após o T 2000m (p = .56) e 10 minutos após o exercício moderado (p = .95). No quadríceps a T P reduziu após os exercícios (p = .03) e retornou ao baseline com 10 minutos de recuperação (p = .974). No biceps braquial (BB) a T P aumentou em relação ao baseline durante a recuperação (p < .001). O exercício intenso de curta duração e moderado prolongado em remoergômetro proporcionam respostas térmicas diferenciadas no peitoral e DS. No BB e quadríceps as respostas térmicas são equivalentes entre estes exercícios.
Revista Internacional de Medicina y Ciencias de la Actividad Fisica y del Deporte, 2015
Infrared thermography (IRT) records the radiant heat of a body, which is emitted in the range of ... more Infrared thermography (IRT) records the radiant heat of a body, which is emitted in the range of the electromagnetic spectrum that human vision is not able t...
Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity, 2021
Objective To verify the validity of anthropometric methods body adiposity index (BAI), relative f... more Objective To verify the validity of anthropometric methods body adiposity index (BAI), relative fat mass (RFM) and body fat index (BFI) to estimate body fat percentage (%BF) in adolescents. Methods A cross-sectional study was carried out with 420 Brazilian adolescents aged 15-19 years, stratified by age (< 18 years, n = 356; ≥ 18 years, n = 64) and sex (boys, n = 216; girls, n = 204). The Anthropometric measurements height, body weight, hip circumference and waist circumference were collected to calculate the %BF by BAI, RFM, BFI methods. Subsequently, %BF was measured by dual emission X-ray absorptiometry (DXA), adopted as a reference method. In the statistical analysis of the data, the Pearson correlation test and the paired t test between %BF obtained by the equations and by the DXA were performed. The method validation criterion was that 68% of individuals should be within an acceptable error range of ± 3.5% of BF and Cohen's Kappa index ≥ 0.61. Additionally, the Bland-Altman graphical analysis was performed. Results All methods showed a high correlation with DXA. For the Kappa index, only the RFM reached the criterion in the total sample (0.67) and in the sample < 18 years (0.68). None of the methods reached the criterion of 68% of the sample within the error range of ± 3.5% of BF. Conclusion The BAI, RFM and BFI equations were not valid for predicting BF in the studied sample according to the criteria adopted regardless of sex or age. Level of evidence Level V, cross-sectional descriptive study.
The aims of this study were: i) to verify whether player internal load (PIL) monitored via heart ... more The aims of this study were: i) to verify whether player internal load (PIL) monitored via heart rate (HR) varies with game-time and playing position; ii) whether intermittent running capacity (IRC) is related to the maintenance of within-match PIL in elite youth (U-15) soccer players. Method: Twenty-one elite soccer players (14±0.5 yrs, 172±7 cm, 63±6 kg) had their heart rate monitored (beats/min) in five matches and were tested twice for IRC (Yo-YoIR2, distance [m]) over a seven-week competitive season. Percentage of maximal heart rate (%HR max) and time spent (TS%) in five zones (Z1[<70%]; Z2[71-85%]; Z3[86-90%]; Z4[91-95%] and Z5[>96%]) were our PIL indexes. Data from three complete games in the same position of each player were analyzed and matches halves, time intervals (T1 to T6), and playing positions (fullbacks, central defenders and forwards [N=5 each], midfielders [N=6]) were compared, and the relationship between IRC and within-match PIL was determined. Results: PIL was higher in 1 st (86±3%) than in the 2 nd half (84±4%; p<.001). The 2 nd half had more TS% in Z1 and Z2 (p<.05). PIL in T4 was the lowest (p<.01), and in T6, it was lower than T1 and T2 (p<.01). Fullbacks and midfielders showed higher PIL and higher TS% in Z4 (p<.05) than the other positional roles. The average IRC correlated with PIL in T6 (r=.56, p<.01) only. Conclusion: In conclusion, the internal load in elite youth (U-15) soccer players varies with game-time and playing position; and their IRC is related to the maintenance of within-match PIL.
Journal of strength and conditioning research, Jan 25, 2018
Brito, CJ, Moreira, DG, Ferreira, JJ, Díaz-de-Durana, AL, Miarka, B, Bouzas Marins, JC, and Sille... more Brito, CJ, Moreira, DG, Ferreira, JJ, Díaz-de-Durana, AL, Miarka, B, Bouzas Marins, JC, and Sillero-Quintana, M. Immune response related with skin thermal pattern in judokas: A new application for infrared thermography? J Strength Cond Res XX(X): 000-000, 2018-This study investigated the association between body skin temperature (BST) and immune response after judo training, and compared the immune responses considering 2 post-training skin thermal pattern ("spots"-SPT and "localized"-LOC). For this, we evaluated 32 (25-male) black-belt judokas from the Spanish Junior National Team (18.0 ± 3.5 years, 72.4 ± 18.4 kg, and 17.1 ± 7.5% body fat). White blood cell and BST measurements were performed at pre-training, immediately, 1, and 24-hour post-training. Body skin temperature (° C) was estimated by skin temperature from 4 regions of interest (chest, upper arm, thigh, and calf). The main results indicated that 13 judokas were classified as SPT and 19 as LOC. In com...
Research Quarterly for Exercise and Sport, Mar 24, 2022
Purpose: Despite the growing works analyzing exercise-induced thermoregulatory adjustments throug... more Purpose: Despite the growing works analyzing exercise-induced thermoregulatory adjustments through thermography, the skin temperature (Tsk) response of the same muscle groups underwent to different exercise demands has not been investigated. This study analyzed the behavior of Tsk of the same muscle groups when exercised with different demands in rowing. Methods: Eighteen men underwent three performance tests on a rowing ergometer: whole-body 2,000 m test (RTWB), upper-body (RTUB), and lower-body (RTLB) tests. In each condition, thermograms were recorded before (pre), immediately after test (post), and at 10 (REC10), 20 (REC20), and 30 (REC30) minutes post-exercise recovery. Tsk was measured at the pectoral (control body region), upper back, quadriceps, brachial biceps, and forearm. Results: Pectoral-Tsk reduced comparably in response to all testing conditions (p < .05). Upper back-Tsk decreased post (p < .001) and returned to baseline in the RTUB (REC10, p = 1.0) and RTWB (REC30, p = .128), while remained reduced in the RTLB (p < .001). Quadriceps-Tsk reduced post (p < .05) and returned to baseline in the RTWB and RTLB at REC10 (p = 1.0), remaining reduced in the RTUB during recovery (p < .05). Regarding the upper limbs, Tsk increased more markedly in the RTUB versus RTWB during the recovery period (p < .05); in the RTLB, biceps-Tsk remained below baseline over time (p < .05), whereas the forearm-Tsk was restored at REC10 (p = 1.0). Conclusion: Manipulating the muscle groups involved in rowing alters the Tsk response within equal ROI. Exercise-induced Tsk changes can reflect local hemodynamic and thermoregulatory adjustments.
International Journal of Environmental Research and Public Health
Infrared thermography (IRT) is a technology easy to use for clinical purposes as a pre-diagnostic... more Infrared thermography (IRT) is a technology easy to use for clinical purposes as a pre-diagnostic tool for many health conditions. However, the analysis process of a thermographic image needs to be meticulous to make an appropriate decision. The adipose tissue is considered a potential influence factor in the skin temperature (Tsk) values obtained by IRT. This study aimed to verify the influence of body fat percentage (%BF) on Tsk measured by IRT in male adolescents. A total of 100 adolescents (16.79 ± 0.97 years old and body mass index of 18.41 ± 2.32 kg/m²) was divided into two groups through the results of a dual-energy X-ray absorptiometry analysis: obese (n = 50, %BF 30.21 ± 3.79) and non-obese (n = 50, %BF 11.33 ± 3.08). Thermograms were obtained by a FLIR T420 infrared camera and analyzed by ThermoHuman® software version 2.12, subdividing the body into seven regions of interest (ROI). The results showed that obese adolescents presented lower mean Tsk values than the non-obese...
Revista Brasileira de Cineantropometria & Desempenho Humano
Infrared thermography (IRT) has been used to assess skin temperature (Tsk), especially during the... more Infrared thermography (IRT) has been used to assess skin temperature (Tsk), especially during the COVID-19 pandemic, as an important tool in medical screening not only of the general population, but also of young athletes. However, the subcutaneous adipose tissue can act as an insulator when the Tsk is assessed by IRT, modifying the normal Tsk data and leading to their misinterpretation. Considering that the body mass index (BMI) is an important predictor of obesity, the objective of this study was to verify if the Tsk measured by IRT is affected by the BMI in adolescents. A preliminary study was carried out being four participants intentionally selected, all 16 years old, each one classified in a different BMI range according to the criteria of the World Health Organization for the adolescent population: underweight, healthy weight, overweight and obesity. Four thermograms of each participant were recorded and the ThermoHuman® software was used to evaluate 82 regions of interest (R...
Objectives: Verify the validity of electrical bioimpedance (BIA) and the skinfold method in estim... more Objectives: Verify the validity of electrical bioimpedance (BIA) and the skinfold method in estimating the percentage of body fat (% BF) in middle-aged and elderly women, using dual emission X-ray absorptiometry (DXA) as a reference method. Material and methods: The sample consisted of 106 volunteers (middle age, n = 58 [51.3 ± 4.9 years] and elderly, n = 48 [67.2 ± 5.8 years]). The volunteers were submitted to anthropometric assessments and the % BF was subsequently calculated using the Jackson and Pollock 7 skinfold protocol (7SF). The % BF was also measured using BIA and DXA. Pearson’s correlation, Bland and Altman method, effect size and repeated-measure t-test were used to test the hypotheses. Results: Although there is a moderate positive relationship between the methods evaluated for middle-aged women (DXA vs 7SF, r = 0.67; DXA vs BIA, r = 0.62) and moderate to strong for the elderly (DXA vs 7SF, r = 0.57; DXA vs BIA, r = 0.75) (p ≤ 0.05 in all analyzes), the agreement betwee...
Revista Brasileira de Obesidade, Nutrição e Emagrecimento, 2020
Introdução: As doenças cardiovasculares são as principais causas de óbitos no Brasil, sendo a sín... more Introdução: As doenças cardiovasculares são as principais causas de óbitos no Brasil, sendo a síndrome metabólica definida pela presença de obesidade abdominal e pelo menos mais dois fatores de risco cardiovasculares. Objetivo: Identificar a prevalência de Síndrome Metabólica (SM), bem como sua associação com fatores de risco cardiovascular em professores. Métodos: Participaram do estudo 150 docentes, com idade média de 40±11 anos. Para classificação da SM, foram avaliadas circunferência de cintura, triglicerídeos, lipoproteína de alta densidade (HDL-C), pressão arterial e glicemia. A distribuição dos dados foi verificada através do teste Kolmogorov-Smirnov. Posteriormente os testes t independente e Mann-Whitney foram utilizados para comparar as variáveis entre os grupos sem SM e com SM. Regressão de Poisson e razão de prevalência foram utilizadas para determinar a associação, bem como a magnitude desta entre a SM e demais variáveis. Adotou-se um nível de significância de 5%. Result...
Resumo — Este estudo analisou o perfil de simetria térmica de membros superiores e inferiores de ... more Resumo — Este estudo analisou o perfil de simetria térmica de membros superiores e inferiores de nadadores de elite. Foram obtidos termogramas de 27 nadadores, sendo nove mulheres (idade: 18.0 ± 1.0 anos, massa corporal: 58.9 ± 5.4 kg, estatura: 168.0 ± 2.1 cm) e 18 homens (idade: 19.5 ± 1.2 anos, massa corporal: 73.7 ± 6.3 kg, estatura: 174.6 ± 6.8 cm). A temperatura irradiada da pele (TIP) foi mensurada nas mãos, antebraços, braços, coxas, pernas e ombros. O teste T independente indicou similaridade térmica entre os lados direito e esquerdo em todas regiões corporais analisadas (p > 0.05), tanto em homens quanto em mulheres. As diferenças térmicas bilaterais médias foram consideradas clinicamente aceitáveis em todas regiões corporais (≤ 0.49 °C), com tamanhos de efeito variando entre insignificante e pequeno. Em conclusão, nadadores de alto rendimento apresentaram simetria térmica contralateral nos membros superiores e inferiores, sugerindo uma avaliação termográfica normal ind...
RICYDE. Revista internacional de ciencias del deporte, 2021
The purpose of this study was to compare the effect of the glycaemic index of breakfast on metabo... more The purpose of this study was to compare the effect of the glycaemic index of breakfast on metabolic parameters and performance of cyclists with different types of hydration (water or isotonic beverage). Twelve male recreational cyclists participated in four experimental trials where they consumed either a high glycaemic index (HGI) or low glycaemic index (LGI) meal, 30 min before exercise on a cycle ergometer. Exercise was performed at 70% maximal oxygen uptake for 90 min followed by a 6 km performance. During each trial, 3 mL.kg-1 body mass of either water or isotonic beverage was provided. The postprandial glycaemic response and areas under the blood glucose curve 30 min after ingestion were higher after the consumption of the HGI meals than that after the consumption of the LGI meals. The glycaemic response and carbohydrate oxidation during the trials with isotonic beverage consumption were higher than that in trials with water consumption during exercise (p<0.05). There was ...
Summary Background: The quality of the consumed diet is important for the improvement in performa... more Summary Background: The quality of the consumed diet is important for the improvement in performance during training and the achievement of positive results on competitions. The objective of study was to investigate the breakfast practices, and nutritional strategies used before and during training and competition of cyclists participating in the biggest mountain biking competition of Brazil. Methods: The participants (n = 146) were asked to complete a questionnaire during the distribution of kits on the day before the competition. The questionnaire included 13 questions about the participants’ characteristics, pre-training and pre-competition usual breakfast and meal consumption, and systemic or gastrointestinal symptoms during exercise. All statistical analyses were conducted using SigmaStat 3.1 software. Results: 97.54% of participants consumed breakfast pre-training, while all participants consumed a pre-competition breakfast. After the analyses, banana and bread were the most c...
Is relative fat mass a better indicator of high blood pressure levels when compared to other anth... more Is relative fat mass a better indicator of high blood pressure levels when compared to other anthropometric indexes? ¿Es la masa grasa relativa un mejor indicador de los niveles de presión arterial alta en comparación con otros índices antropométricos?
Journal of strength and conditioning research, Jan 22, 2018
da Silva, CD, Machado, G, Fernandes, AA, Teoldo, I, Pimenta, EM, Marins, JCB, and Garcia, ES. Mus... more da Silva, CD, Machado, G, Fernandes, AA, Teoldo, I, Pimenta, EM, Marins, JCB, and Garcia, ES. Muscle damage-based recovery strategies can be supported by predictive capacity of specific global positioning system accelerometry parameters immediately after soccer match-load. J Strength Cond Res XX(X): 000-000, 2018-Soccer match-load can be linked to recovery kinetic markers. However, match variability hinders the magnitude of relationship between parameters of interest. Therefore, we examined the correlation between 21 global positioning system accelerometry (GPS-A) parameters and changes in serum creatine kinase (CK) concentrations, muscle soreness (MS), and perceptive recovery quality (PRQ) assessed at baseline (1 h before) and post (0 minute, 2, 4, and 24 hours) a standardized 90-minute match-simulation in 12 university players. Global positioning system accelerometry (15 Hz) data were tested as manufacturer and configurable thresholds. Four GPS-A parameters showed moderate to very...
Diabetes Mellitus Type 2 affects the current society, and it is associated with overweight and ob... more Diabetes Mellitus Type 2 affects the current society, and it is associated with overweight and obesity. The exercise has demonstrated favorable results in anthropometric parameters and gain joint flexibility and body mobility in these people. The objective was to analyze the interference of an exercise program on anthropometric measurements, flexibility and body mobility in type 2 diabetics. This is a longitudinal study realized with 14 type 2 diabetic patients with a mean age of 55 ± 9 years, from both genders, separated into groups of aerobic exercise (n = 8) and resistance (n=6). The body mass index, waist circumference, abdominal circumference, hip circumference, waist/hip ratio, body fat percentage, coxofemoral flexibility and body mobility were evaluated before and after a period of 10 weeks of aerobic or resistance exercise with weekly frequency of 3 days. For data analysis, we applied the paired t-test (pre x post exercise) and independent t-test (aerobic group x resistance ...
Fundamento: A hipertensão arterial sistêmica é uma doença multifatorial, de alta prevalência na p... more Fundamento: A hipertensão arterial sistêmica é uma doença multifatorial, de alta prevalência na população brasileira e mundial e constitui o principal fator de risco tratável para as doenças cardiovasculares. Objetivos: Verificar a prevalência, de acordo com o sexo, dos comportamentos de risco e das comorbidades associadas à hipertensão nos pacientes atendidos no Centro Hiperdia de Viçosa, MG Métodos: Estudo transversal que avaliou 172 prontuários de hipertensos maiores de 18 anos, não diabéticos, encaminhados ao Centro Hiperdia de Viçosa. Entre os dados avaliados a partir de análise de prontuários estão os fatores e comportamentos de risco cardiovascular como sobrepeso/obesidade, dislipidemia, tabagismo, etilismo e sedentarismo, bem como condições clínicas ou comorbidades associadas à HAS. Para análise dos dados foram empregados os testes de Kolmogorov-Smirnov, o teste de Mann-Whitney e o teste de correlação de Pearson. O nível de significância adotado foi de 5%. Resultados: Observ...
INTRODUCTION: There is no doubt that core or central temperature has a direct relationship with t... more INTRODUCTION: There is no doubt that core or central temperature has a direct relationship with the exercise intensity. Some studies focused on measuring the central thermal response. However it is also interesting to investigate the thermal response of skin temperature after exercising. Between many reasons, it could provide important information about the recovery status -making possible to assess when the athletes are completely recovered as well as determining the influence of exercise on skin temperature. OBJECTIVE: The purpose of our study is to determine by Infrared Thermography (IRT) the evolution of skin temperature for muscles and joints areas after strength training, besides to evaluate the thermal asymmetries. METHODS: A total of fourteen physical active males (age: 21.44±2.64 years; height: 1.78±0.05 m; weight: 73.23±7.63 Kg), exercising at least 3 times per week, took part of the study. They did not report any diseases, consumption of medicaments, drugs, alcohol or tob...
Resposta térmica da pele ao exercício em remoergômetro de alta versus moderada intensidade em hom... more Resposta térmica da pele ao exercício em remoergômetro de alta versus moderada intensidade em homens fisicamente ativos PALAVRAS CHAVE: Termografia. Temperatura cutânea. Regulação da temperatura corporal. RESUMO Comparou-se a resposta da temperatura da pele (T P) entre o exercício intenso de curta duração e moderado prolongado. Dezoito homens realizaram o teste de 2000 m (T 2000m) e um protocolo de exercício moderado (45 minutos) em remoergômetro. Termogramas foram obtidos antes e após os protocolos, e com 10, 20 e 30 minutos de recuperação. Utilizou-se ANOVA Two-Way com post hoc de Tukey para comparar a T P. No peitoral a T P reduziu após o T 2000m (p < .001) e exercício moderado (p = .003) e retornou ao baseline apenas no moderado (p = .489). Na região dorsal superior (DS) a T P reduziu após os exercícios (p < .001) e retornou ao baseline 30 minutos após o T 2000m (p = .56) e 10 minutos após o exercício moderado (p = .95). No quadríceps a T P reduziu após os exercícios (p = .03) e retornou ao baseline com 10 minutos de recuperação (p = .974). No biceps braquial (BB) a T P aumentou em relação ao baseline durante a recuperação (p < .001). O exercício intenso de curta duração e moderado prolongado em remoergômetro proporcionam respostas térmicas diferenciadas no peitoral e DS. No BB e quadríceps as respostas térmicas são equivalentes entre estes exercícios.
Revista Internacional de Medicina y Ciencias de la Actividad Fisica y del Deporte, 2015
Infrared thermography (IRT) records the radiant heat of a body, which is emitted in the range of ... more Infrared thermography (IRT) records the radiant heat of a body, which is emitted in the range of the electromagnetic spectrum that human vision is not able t...
Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity, 2021
Objective To verify the validity of anthropometric methods body adiposity index (BAI), relative f... more Objective To verify the validity of anthropometric methods body adiposity index (BAI), relative fat mass (RFM) and body fat index (BFI) to estimate body fat percentage (%BF) in adolescents. Methods A cross-sectional study was carried out with 420 Brazilian adolescents aged 15-19 years, stratified by age (< 18 years, n = 356; ≥ 18 years, n = 64) and sex (boys, n = 216; girls, n = 204). The Anthropometric measurements height, body weight, hip circumference and waist circumference were collected to calculate the %BF by BAI, RFM, BFI methods. Subsequently, %BF was measured by dual emission X-ray absorptiometry (DXA), adopted as a reference method. In the statistical analysis of the data, the Pearson correlation test and the paired t test between %BF obtained by the equations and by the DXA were performed. The method validation criterion was that 68% of individuals should be within an acceptable error range of ± 3.5% of BF and Cohen's Kappa index ≥ 0.61. Additionally, the Bland-Altman graphical analysis was performed. Results All methods showed a high correlation with DXA. For the Kappa index, only the RFM reached the criterion in the total sample (0.67) and in the sample < 18 years (0.68). None of the methods reached the criterion of 68% of the sample within the error range of ± 3.5% of BF. Conclusion The BAI, RFM and BFI equations were not valid for predicting BF in the studied sample according to the criteria adopted regardless of sex or age. Level of evidence Level V, cross-sectional descriptive study.
The aims of this study were: i) to verify whether player internal load (PIL) monitored via heart ... more The aims of this study were: i) to verify whether player internal load (PIL) monitored via heart rate (HR) varies with game-time and playing position; ii) whether intermittent running capacity (IRC) is related to the maintenance of within-match PIL in elite youth (U-15) soccer players. Method: Twenty-one elite soccer players (14±0.5 yrs, 172±7 cm, 63±6 kg) had their heart rate monitored (beats/min) in five matches and were tested twice for IRC (Yo-YoIR2, distance [m]) over a seven-week competitive season. Percentage of maximal heart rate (%HR max) and time spent (TS%) in five zones (Z1[<70%]; Z2[71-85%]; Z3[86-90%]; Z4[91-95%] and Z5[>96%]) were our PIL indexes. Data from three complete games in the same position of each player were analyzed and matches halves, time intervals (T1 to T6), and playing positions (fullbacks, central defenders and forwards [N=5 each], midfielders [N=6]) were compared, and the relationship between IRC and within-match PIL was determined. Results: PIL was higher in 1 st (86±3%) than in the 2 nd half (84±4%; p<.001). The 2 nd half had more TS% in Z1 and Z2 (p<.05). PIL in T4 was the lowest (p<.01), and in T6, it was lower than T1 and T2 (p<.01). Fullbacks and midfielders showed higher PIL and higher TS% in Z4 (p<.05) than the other positional roles. The average IRC correlated with PIL in T6 (r=.56, p<.01) only. Conclusion: In conclusion, the internal load in elite youth (U-15) soccer players varies with game-time and playing position; and their IRC is related to the maintenance of within-match PIL.
Journal of strength and conditioning research, Jan 25, 2018
Brito, CJ, Moreira, DG, Ferreira, JJ, Díaz-de-Durana, AL, Miarka, B, Bouzas Marins, JC, and Sille... more Brito, CJ, Moreira, DG, Ferreira, JJ, Díaz-de-Durana, AL, Miarka, B, Bouzas Marins, JC, and Sillero-Quintana, M. Immune response related with skin thermal pattern in judokas: A new application for infrared thermography? J Strength Cond Res XX(X): 000-000, 2018-This study investigated the association between body skin temperature (BST) and immune response after judo training, and compared the immune responses considering 2 post-training skin thermal pattern ("spots"-SPT and "localized"-LOC). For this, we evaluated 32 (25-male) black-belt judokas from the Spanish Junior National Team (18.0 ± 3.5 years, 72.4 ± 18.4 kg, and 17.1 ± 7.5% body fat). White blood cell and BST measurements were performed at pre-training, immediately, 1, and 24-hour post-training. Body skin temperature (° C) was estimated by skin temperature from 4 regions of interest (chest, upper arm, thigh, and calf). The main results indicated that 13 judokas were classified as SPT and 19 as LOC. In com...
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