Papers by Fabricio Miranda
Journal of Science and Medicine in Sport, Nov 1, 2017
Results: Significant increases from baseline were found during the 5th week with a rise in CK (13... more Results: Significant increases from baseline were found during the 5th week with a rise in CK (130.18 ± 42.91 to 1681 ± 2024.40 U/l), LDH (433.88 ± 55.59 to 710.06 ± 189.3 U/l) and leucocytes (7.83 ± 1.77 to 8.75 ± 2.02 l) however lymphocytes percentage had a significant decrease (31.97 ± 6.76 to 27.34 ± 5.06). In relation to AST, different trends were found with a significant decrease from baseline (30.53 ± 5.25 U/l) to the 8th week (26.29 ± 13.13 U/l), and a substantial increase at the 5th week (98.71 ± 26.72 U/l). The highest mean ranks were at the 5th week (CK = 5.94; LDH = 5.47; AST = 6; leucocytes = 5.13; neutrophils percentage = 5.16) in contrast with the lowest lymphocytes percentage mean rank (1.63). Wilcoxon test showed a significant impact at the 5th week on CK (Z = −3.724, p = 0.00), LDH (Z = −3.724, p = 0.00), AST (Z = −3.725, p = 0.00), lymphocytes percentage (Z = −2.343, p = 0.02) and neutrophils percentage (Z = −2.068, p = 0.04). Conclusion: Our results support a significant effect at the enzymes in muscle and might be related to the muscle damage due the intensity and duration of specific muscle solicitation. The innate immune system and inflammatory markers are unclear because it could be a positive response (increasing the availability of cells to become involved) or if it is a negative response (meaning that cells have been diverted from activities in which they were previously involved). However, all results can be interpreted to represent a stress related or anti-inflammatory response to the Mountain military activity (5th week) on the 2012 Commandos Course.
Journal of Science and Medicine in Sport, Nov 1, 2017
Revista Brasileira De Medicina Do Esporte, Oct 1, 2006
The aim of this study was to determine the reproducibility of an instrument of measurement of mus... more The aim of this study was to determine the reproducibility of an instrument of measurement of muscular power (MP), the Power Control Technogym @ , through a simple test of MP. Fifteen women (26.2 ± 1.9 years) experienced in strength training in two exercises-the low row and the front lat pull down, were evaluated through a test of 1RM. The maximum load and the load that generated the MP in each exercise were determined. After obtaining the load that generated the MP, the individuals carried out three days of testing with the purpose to analyze inter and intradays reproducibility of the generated power. The comparison between the results of the MP was made through the ANOVA for repeated measures and Bonferroni post-hoc to specify which measures differ from each other, being adopted a level of significance of 5%. No significant differences were found at inter and intradays measurements respectively in the low row (p = 0.991; p = 1.000) and front lat pull down (p = 0.607; p = 1.000). This data can suggest that, for a simple test of MP, the Power Control TechnoGym @ seems to be a useful and trustworthy instrument in the use of loads in the MP.
PubMed, 2010
Traditional exercise order dictates large muscle group or multijoint exercises should be performe... more Traditional exercise order dictates large muscle group or multijoint exercises should be performed before small muscle group or single joint exercises. The purpose of this study was to examine the influence of exercise order on strength and muscle thickness (MT) in untrained men after 12 weeks of linear periodized resistance training. The participants were randomly assigned into three groups. One group began with large and progressed toward small muscle group exercises (LG-SM) while another started with small and advanced to large muscle group exercises (SM-LG). The exercise order for LG-SM was bench press (BP), lat pull-down (LPD), triceps extension (TE), and biceps curl (BC). The order for the SM-LG was BC, TE, LPD, and BP. The third group served as a control group (CG). Training frequency was two sessions/week with at least 72 hours between sessions. One repetition maximum (1RM) for all exercises, biceps and triceps MT (assessed by ultrasound techniques) were collected at baseline and after 12 weeks. After 12 weeks, all exercises for both training groups presented significant 1RM strength gains when compared to CG with exception of BC in LG-SM. Between baseline and post training, all exercises for both training groups presented significant strength gains with exception of BC in LG-SM and BP in SM-LG. Triceps MT for both training groups were significantly higher when compared to the CG, but with no significant differences between them (p > 0.05). Significant differences in MT from pre- to post-training were found only for the SM-LG group (p < 0.05), while the biceps MT presented significant differences only between LG-SM and CG (p < 0.05), Effect size data demonstrated differences in 1RM and triceps MT based on exercise order. In conclusion, if an exercise is important for specific training goals, it should be performed at the beginning of the training session, whether or not it is a large or a small muscle group exercise. Key pointsThe two linear periodized resistance training programs utilized promotes strength and muscle volume gains in untrained men.Exercise order may be particularly important to improve strength during 12 weeks of linear periodized resistance training.If an exercise is important for the training goals of a program, then it should be placed at the beginning of the training session, whether or not it is a large or a small muscle group exercise.
Arquivos em Movimento, 2008
Resumo: O objetivo do experimento foi comparar o método de pirâmide crescente e decrescente sobre... more Resumo: O objetivo do experimento foi comparar o método de pirâmide crescente e decrescente sobre o número total de repetições máximas (RM) em uma sessão de treinamento de força. Participaram 14 indivíduos (24,1 ± 4,9 anos; 68,7 ± 10,1 kg; 170,8 ± 8,5 cm), com experiência em treinamento de força. Os dados foram coletados em quatro dias não consecutivos: Dias 1 e 2-teste e re-teste de 1RM no exercício cadeira extensora (CE); Dias 3 e 4-realização do protocolo de treinamento de pirâmide crescente ou decrescente, procedimentos no delineamento alternado foram utilizados para determinar a ordem de realização dos protocolos. Para a pirâmide crescente adotaram-se três séries com intensidade de 70, 80 e 90% de 1RM respectivamente, e para a pirâmide decrescente a ordem foi inversa, sendo o intervalo entre as séries, fixos em três minutos. O teste t pareado foi utilizado para verificar o número total de RM produzido em ambos protocolos experimentais (p<0,05). Não foi encontrada diferença entre as RM totais realizadas nos dois métodos de treinamento. Os dados indicam que os métodos pirâmide crescente e decrescente não apresentam efeitos agudos diferenciados sobre o número total de RM no exercício CE nas intensidades utilizadas neste experimento. Palavras chave: Exercícios de força; Sessão de treinamento; 1RM.
journal of physical education, Jul 9, 2008
Page 1. R. da Educação Física/UEM Maringá, v. 19, n. 1, p. 85-92, 1. trim. 2008 COMPARAÇÃO DO MÉT... more Page 1. R. da Educação Física/UEM Maringá, v. 19, n. 1, p. 85-92, 1. trim. 2008 COMPARAÇÃO DO MÉTODO PRÉ-EXAUSTÃO E DA ORDEM INVERSA EM EXERCÍCIOS PARA MEMBROS INFERIORES COMPARISION OF ...
Aquecimento RM10 Influência aguda do alongamento passivo e do aquecimento específico na capacidad... more Aquecimento RM10 Influência aguda do alongamento passivo e do aquecimento específico na capacidade de desenvolver carga máxima no teste de 10RM
PubliCE Standard, Aug 16, 2010
Journal of Bodywork and Movement Therapies, Apr 1, 2021
OBJECTIVE The purpose of this study was to verify the acute effects of different exercise orders ... more OBJECTIVE The purpose of this study was to verify the acute effects of different exercise orders and rest intervals between sets on young athletes performance. METHOD Sixteen young male football players (73.2 ± 4.8 kg, 177.5 ± 5.1 cm, BMI 23.2 ± 1.1, 19.8 ± 0.9 years) completed six experimental strength training (ST) sessions with different exercise order sequences (A and B) and rest interval lengths (1 min, 3 min, and self-selected).In Sequence A the exercises were: bench press (BP), back squat (BS), biceps curl (BC) and plantar flexion (PF); while Sequence B was performed in the opposite order (i.e. PF, BC, BS and BP).The total work volume (TWV) per exercise (sets x repetitions x load) and per training session (sum of the TWV of all exercises) were evaluated for all ST sessions. RESULTS BC and PF exercises presented higher TWV in sequence B (p ≤ 0.05). Already, the exercises BP, BS and PF presented higher TWV with 3 min and self-selected rest intervals (p ≤ 0.05). The 3-min and self-selected rest intervals presented higher values of TWV per training session compared to the 1-min rest interval (p ≤ 0.05). CONCLUSION The exercise order influenced certain exercises (BC and PF), which presented higher TWV when positioned at the beginning of a sequence. While the longer rest intervals (3 min and self-selected) resulted in higher TWV per exercise (BP, BS and PF) and per training session. These results suggest that self-selected rest interval can be implemented to increase training efficiency in young athletes.
Telecommunication Systems, 2014
This paper proposes an underwater monitoring system built with sensors distributed over a subsea ... more This paper proposes an underwater monitoring system built with sensors distributed over a subsea infrastructure, which is responsible for operation and transportation of oil production. We consider the use of currently available equipment. Data is transmitted by underwater acoustic modems installed on the sensors, platforms and vessels used for logistic support of the oil exploration. These vessels are used to collect data and provide references for positioning the sensors. However, the vessels may not be within the sensor range at all times, requiring the use of DTN (Delay/Disruption Tolerant Network). This work performs an analysis of the behavior of the monitoring system, investigating the features that influence the underwater sensor network, using the ONE (Opportunistic Network Environment) simulator. In this case, the displacement of logisticsupport vessels on the maritime routes is very important, therefore we consider real-world scenarios based on the Brazilian offshore oil exploration area.
Revista Brasileira de Ciência e Movimento
O método Fascia Stretch Training 7 Sets (FST-7) ganhou popularidade nos últimos anos sendo dissem... more O método Fascia Stretch Training 7 Sets (FST-7) ganhou popularidade nos últimos anos sendo disseminado por fisiculturistas norte-americanos. O objetivo do presente estudo foi comparar os efeitos do protocolo de treinamento do método FST-7 com ou sem alongamento passivo entre as séries nas variáveis metabólicas (lactato [LAC] e creatinofosfoquinase [CPK]), desempenho (trabalho total – TT) e percepção subjetiva de esforço (PSE) em homens treinados. Nove homens treinados (23, 2 ± 1,7 anos; 174,2 ± 6,2 cm; 84,6 ± 9,8 kg, 3,4 ± 1,0 anos de experiência em treinamento de força) foram submetidos ao teste e re-teste de 10 repetições máximas (10RM) nos exercícios supino reto livre e crucifixo horizontal com halteres em dias distintos, respeitando 48 horas de intervalo entre as sessões de teste e re-teste. Decorridas 72 horas do último dia de teste, os participantes realizaram os protocolos experimentais de forma randomizada com 72 horas de intervalo entre as sessões. As coletas sanguíneas for...
Journal of Science and Medicine in Sport, 2017
(n = 17; 4-h sleep, 18-20 • C) (n = 17) or hot condition (n = 18; 8 h sleep, 35 • C). A fourth gr... more (n = 17; 4-h sleep, 18-20 • C) (n = 17) or hot condition (n = 18; 8 h sleep, 35 • C). A fourth group of participants also completed the testing under a simultaneous sleep restricted and hot condition (n = 13; 4-h sleep, 35 • C). The Multi-Component Training Distress Scale (MTDS) was completed upon waking each morning. Physical task performance was quantified by the distance travelled or repetitions of each task. Percentage of maximal heart rate (%HRmax) and grip strength were also recorded. MTDS factor structure was assessed and regression analyses was used to predict firefighting performance and physiological responses. Results: Factor analysis revealed a 17-item, six subscale structure as the best explanation of variation in responses within this cohort. The revised multi-component training distress scale (MTDS-FF) exhibits a clean six-factor structure, and has good internal validity within subscales (Cronbach's alphas' of 0.88, 0.91, 0.84, 0.94, 0.69 and 0.77; for fatigue, physical signs and symptoms, sleep disturbance, vigour, depression and difficulty coping respectively). Physiological and performance variables were most often predicted by perceived depression in the control (ˇ0.36 to 0.47, p < 0.05) and sleep-restricted (ˇ0.35 to 0.40, p < 0.05) conditions, and by perceived fatigue in the heat (ˇ0.39 to 0.53, p < 0.05). Conclusion: Over three days of simulated wildfire suppression, the MTDS-FF was able to explain the variance in self-reported perceived stress and fatigue responses. This new measure was also able to predict firefighters' performance within this simulated environment. With further research there is potential for this measure to provide practical and cost effective options for personnel monitoring in field settings.
Journal of Science and Medicine in Sport, 2017
Journal of Science and Medicine in Sport 20S (2017) S27-S30 S29 numbers of MSCI can be pointed ou... more Journal of Science and Medicine in Sport 20S (2017) S27-S30 S29 numbers of MSCI can be pointed out. The importance of intervention strategies and individually adjusted treatment and physical training according to the physical requirements of their duties is an important part of the programme to prevent high rates of MSCI.
Journal of Science and Medicine in Sport, 2017
Methods: 30 right-handed participants, comprising both military and recreationally active civilia... more Methods: 30 right-handed participants, comprising both military and recreationally active civilian groups were recruited for the study. Participants were randomly assigned to either a control (CON; age; 33.40 ± 9.83 yrs, VO 2max 42.32 ± 7.55 mL min −1 kg −1) or dehydration group (DEH; age; 30.67 ± 11.71 yrs, VO 2max 40.08 ± 6.90 mL min −1 kg −1). Those assigned to the DEH, first completed light-moderate intensity cycling in a hot, humid environment, which produced a 2.42 ± 0.63% loss in body mass, followed by a 46.82 ± 16.01 min rest period to ensure a return to pre-exercise core temperature and heart rate. The CON did not complete exercise, and maintained euhydration. All participants completed a serial motor task using their non-dominant hand (motor performance). Participants then returned to the testing facilities approximately five hours later in a euhydrated state, quantified by urine specific gravity (USG) and body mass, to complete a retention and transfer test of the task (motor learning). Subjective measures were also obtained throughout the study and included thirst, alertness, concentration and lethargy. Results: Throughout motor performance, no significant differences in speed, error or the inverse efficiency score were detected (p > 0.05). However, assessments of subjective performance in those who undertook the dehydration protocol, were significantly lower (p < 0.001). Upon returning to the testing facilities, no differences between the groups in any subjective assessments were identified (p > 0.05). Furthermore, although a 7.5 and 6.4% improvement to the inverse efficiency score in the DEH was identified for both the retention and transfer tests, these changes were not significant (p = 0.511 and p = 0.321, respectively). Similarly, no differences in error or speed related outcomes resulted (p > 0.05). Conclusions: Ultimately, dehydration prior to the training of a motor skill (motor performance), did impair subjective measures, however, motor performance and learning between the groups were similar, independent of the effect of hydration status. Collectively, these findings suggest that dehydration of up to ∼2.5% of body mass does not impact the retention and transfer of motor skills. Additionally, the inclusion of dehydration during military training may assist in minimising the perception that performance and skill learning is hampered by this physiological state.
Physical Therapy in Sport, 2021
OBJECTIVE To investigate the association of movement patterns evaluated by the Dynamic Movement A... more OBJECTIVE To investigate the association of movement patterns evaluated by the Dynamic Movement Assessment (DMA) with the occurrence of musculoskeletal injuries in navy cadets. DESIGN Cohort study. SETTING Participants were filmed performing the six functional tests of the DMA (deep squat, step up, single-leg squat, hop, plank and side-plank tests). PARTICIPANTS 240 navy cadets. MAIN OUTCOME MEASUREMENTS Depending on the number of certain movement patterns on the Dynamic Movement Assessment (DMA), participants were classified as high, moderate, medium or low risk of developing injuries. Predictive associations between injuries and risk classification were examined using logistic regression analysis. RESULTS Considering sex, previous injuries and the type of secondary school as covariates, participants who were classified as high risk were not more likely to develop injuries. Non-military high school was an independent risk factor for any injuries (OR = 3.14, 95% CI [1.43,6.91]; OR = 4.57, 95% CI [1.92,10.83]), overuse injuries (OR = 2.58, 95% CI [1.05,6.30]; OR = 2.55, 95% CI [1.06, 6.14]) and acute injuries (OR = 4.88, 95% CI [1.19,19.99]), respectively. Previous musculoskeletal symptoms also increased the chance of AI (OR = 4.45, 95% CI [1.15,17.18]; OR = 5.91, 95% CI [1.13,30.88]). CONCLUSIONS Movement patterns evaluated by DMA are not associated with an increased risk of injuries. However, attendance of a non-military high school and previous musculoskeletal symptoms are associated with musculoskeletal injuries.
Journal of Science and Medicine in Sport, 2021
OBJECTIVE To investigate predictors of low back and lower extremity musculoskeletal injury in a c... more OBJECTIVE To investigate predictors of low back and lower extremity musculoskeletal injury in a cohort of Naval cadets. DESIGN Prospective Cohort Study METHODS: 545 Naval cadets (Males, n = 394, 72%) were followed-up over eight months. Nine variables were investigated as predictors: history of musculoskeletal symptoms in the last 12 months, ankle dorsiflexion range of motion, sit and reach test, isometric hip abduction and external rotation strength, alignment during the single leg squat test, single leg hop test for distance, prone plank and side plank tests. All injuries that required medical attention were registered. Predictive associations were examined using univariable and multivariable logistic regression analyses. RESULTS The incidence of all injuries was 7%. Cadets who failed the 60-second plank test (OR = 3.3; 95% CI, 1.2-8.8, P = 0.04), had ≤18 cm in the sit and reach test (OR = 4.0; 95% CI, 1.4-11.2, P = 0.01), or reported pain in the last 12 months in two or more body regions (OR = 2.7; 95% CI, 1.02-7.3, P = 0.04), had greater odds of sustaining an overuse injury. No predictors were identified for acute injuries. CONCLUSION Decreased trunk endurance on the prone plank test, reduced posterior chain flexibility on the sit and reach test, and a history of pain reported in two or more sites in the last 12 months were predictors of overuse injuries in Naval cadets. Assessment and intervention of these modifiable risk factors may be clinically relevant in injury screening and prevention.
The Journal of Sports Medicine and Physical Fitness, 2020
BACKGROUND The importance of strength in Brazilian jiu-jitsu (BJJ) has inspired several recommend... more BACKGROUND The importance of strength in Brazilian jiu-jitsu (BJJ) has inspired several recommendations of resistance training (RT) in BJJ athletes, yet little is known about their responses to different RT approaches. Thus, we aimed to investigate volume, efficiency, and fatigue responses in two popular RT protocols. METHODS In a randomized crossover design, 12 male BJJ athletes (mean age: 24.5±3.1 years; height: 175±5 cm; body mass: 77.1±12.9 kg; body fat: 14.3±5.7%; BMI: 24.8±3.0) completed two separate RT protocols consisting of the same exercises performed either as straight sets (TRAD) or alternating sets (AST) for three sets to failure with a previously established 10-repetition maximum (10RM) load. Maximal number of repetitions (MNR), training duration, volume load (VL), and training efficiency (TE = VL/time), rating of perceived exertion (RPE), and blood lactate concentration (LAC) were assessed in each protocol. RESULTS MNR decreased steadily from first to last sets for all exercises, with no difference between protocols (P>0.05), resulting in the same VL. The shorter duration of AST resulted in increased TE (P<0.001), which was accompanied by higher RPE (P<0.001) and LAC (P<0.05), as well as higher session perceived load (P<0.01). CONCLUSIONS Given the role of VL as a driver of RT adaptations, both approaches may be suitable for improvements in strength and hypertrophy. The distinct differences in duration and metabolic response should be considered when implementing RT alongside regular sport training.
Journal of strength and conditioning research, Jan 17, 2018
The objectives were to provide normative data on commonly used physical performance tests that ma... more The objectives were to provide normative data on commonly used physical performance tests that may be associated with musculoskeletal injuries in Navy cadets, and assess for sex and limb dominance differences. A large cohort of Navy cadets were assessed for physical performance tests of flexibility (ankle dorsiflexion range of motion and sit and reach), isometric hip strength, lower limb power (single leg hop), and trunk endurance (plank and side plank tests). Besides providing normative data tables, sex and limb dominance differences were assessed by a two-way mixed ANOVA. A total of 545 Brazilian Navy cadets (394 males) representing 79% of the cadets in the Academy participated. Normative reference values were reported as mean±SD, 95%CI and percentiles. For tests of muscle strength, power and endurance, males performed better than females (p<0.001). For flexibility tests, females achieved greater distances than males for the sit and reach test (p<0.001), but no difference fo...
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Papers by Fabricio Miranda