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Dos Santos, WM, Tavares Junior, AC, Braz, TV, Lopes, CR, Brigatto, FA, and Dos Santos, JW. Resistance-trained individuals can underestimate the intensity of the resistance training session: An analysis among genders, training experience, and exercises. J Strength Cond Res 36(6): 1506-1510, 2022-Resistance training (RT) promotes improvements in healthy parameters for young to elderly adults and athletes' performance. Strength and muscle mass improvements are dependent on exercise intensity. This study verifies whether 53 healthy young adults underestimate exercise intensity in 3 different exercises, such as bench press (BP), biceps curl (BC), and leg press 45° (LP). Researchers asked the subjects "How much load do you use to perform 10 repetitions in this exercise usually in workout routines?" in each exercise. Individuals warmed up and then performed as many repetitions as possible until they reached the concentric failure. Deviations from data normality were found by using Levene's test; the number of repetitions per exercise within sex was tested by using Friedman's test and Conover's post hoc and Kruskal-Wallis tests to compare the number of repetitions between sex and RT experience. We correlated the number of repetitions and training experience using the Spearman test. The number of repetitions for both groups (male and female) is greater than 8-12 repetitions for BC and LP and BP of the female group, except for men who perform around 8-12 repetitions on BP. Frequency of maximal repetitions reached for 8-12 repetitions for women was 12% for BP, 28% for BC, and 28% for LP. The frequency men reached was 46.5% for BP, 14.3% for BC, and 14.3% for LP. Training experience did not influence the number of repetitions reached. Resistance training practitioners underestimate exercise load (56% of total sample) to be independent of experience. Women underestimate exercise load more than men. Based on the present results, it is possible to state that RT should not be prescribed considering a predefined number of repetitions and a linked percentage of loads, without the guidance for frequent adjustments of loads, according to the exercise performed.

This study assessed associations between changes in the weekly number of sets performed and the percentage change in muscle thickness of the biceps (MTBB) and triceps (MTTB) brachii muscles. Through a retrospective analysis, sixty-eight resistance-trained subjects that participated in previous studies had their previous training volumes analyzed and compared to the volume imposed during each individual study. The relationship between variables was determined through Spearman correlation and a k-cluster analysis was performed to subdivide the participants into three groups and classified as:50% increase in the number of sets for both muscle groups. Moderate and weak correlations were observed between the alterations in training volume and changes in MTBB (rs=0.44, p=0.001) and MTTB (rs=0.35, p=0.002), respectively. A significant difference was noted between50% for MTBB and MTTB (p=0.017; p=0.042, respectively), while no significant difference was observed between50% (both p >0.05) for both muscle groups. In conclusion, muscle hypertrophy of the upper limbs is only weakly to moderately associated with changes in training volume of trained subjects.

O objetivo do estudo foi investigar o comportamento do estresse psicobiológico durante semanas de prova e trabalho de conclusão de curso (TCC) em estudantes universitários e se existe diferença entre gêneros. Participaram do estudo 24 estudantes universitários, 12 homens (idade, 27 ± 5 anos; estatura, 177 ± 4 cm; massa corporal, 73,6 ± 13,0 kg; IMC, 23,6 ± 4,0 kg/m2) e 12 mulheres (idade, 26 ± 6 anos; estatura, 165 ± 7 cm; massa corporal, 65,7 ± 9,4 kg; IMC, 24,2 ± 3,5 kg/m2). O estudo foi conduzido por 3 semanas, sendo: 1° semana (familiarização); 2° semana (provas) e 3° semana (TCC), foram utilizados o questionário de perfil do estado de humor (POMS) e as escalas de estresse percebido (EEP) e escala de preparação e dificuldade das provas. Não foram encontradas diferenças significativas entre homens e mulheres quanto ao nível de preparação para as provas (2,9 ± 0,5 vs 3,2 ± 0,6; P = 0,135), grau de dificuldade das provas (4,0 ± 0,6 vs 4,1 ± 0,3; P = 0,493) e notas (7,1 ± 1,1 vs 6,8 ± 1,2; P = 0,481), respectivamente. Todas as outras variáveis apresentaram diferença entre momentos para homens e mulheres (todos P

Objective: The study sought to verify if there is a difference between training period and competition in load, mood, fatigue, infections, well-being, and recovery. Methods: Twenty male soccer players (17.79 ± 1.23 years old; 72 ± 9.50 kg; height 1.80 ± 0.08 m) were monitored during the pre-competitive week (PCO) and competition (COM). The instruments used were the Profile of Mood States (POMS), the Wisconsin Upper Respiratory Symptom Survey (WURSS), general well-being, and the Total Quality of Recovery scale (TQR). The Internal Training Load (ITL) was monitored by the subjective effort perception. Results: There was a significant difference for POMS-TMDSCORE (P = 0.001), fatigue (P = 0.001) and CV% recovery (P = 0.001) of the COM vs. PCO condition. The severity of WURSS was greater in PCO vs. COM (P = 0.011). For PCO, there was a correlation between CV% recovery (r = 0.61) and fatigue (r = 0.62). In COM, there was a correlation between ITL and CV% recovery (r = 0.94), weekly recovery (r = -0.84), fatigue (r = 0.57), TMDSCORE (r = 0.48). Conclusion: We concluded that although the ITL is lower in COM, mood, fatigue, and weekly variation of recovery are greater when compared to PCO. Besides, regardless of the period, there is a relationship between the ITL and monitoring methods.

BACKGROUND High-intensity interval training protocols using the body weight (WBHIIT) as resistance could be an interesting and inexpensive alternative due to the absence of equipment required (low cost) and the possibility to be performed in a wide range of locations. Therefore, the purpose of the present study was to analyze the effects of a short-term WBHIIT protocol on muscle thickness (MT), muscular endurance (ME), one maximum repetition test (1RM), and maximum oxygen uptake (VO2max) of untrained individuals. METHODS Fifty healthy men (28.2 ± 6.7 years, 77.5 ± 26.2 kg, 171 ± 10 cm, 23.2 ± 8.2 % Fat) were randomized into WB-HIIT (n = 25) or control (CON, n = 25) group. The WB-HIIT performed 9 exercises (40-second stimulus in all out intensity/ 20-second of passive recovery) divided into 3 blocks with 2 sets each for 6 weeks (three times a week). RESULTS Only WB-HIIT resulted in a significant increase in MT, ME, 1RM, and VO2max (all p < 0.05) outcomes and were significantly greater compared to CON (all p < 0.05). CONCLUSIONS Our results demonstrate that a WB-HIIT program can be a time-efficient strategy to promote changes on fitness, morphological and functional parameters in previously untrained sedentary individuals.

The biological maturation is a process manifested more frequently in adolescence, and promotes many physiological changes. The purpose of this study was analysis physical performance of young soccer players in different maturity age. Participated of the study 36 young soccer players (16.5 ± 1.6 years; 178 ± 7 cm; 67 ± 9 kg). During second week of preparation period, were assessed characteristics anthropometric, for obtained the peak height velocity (PHV), vertical jump height tests and sprints tests. Were were separated in 4 groups with 9 players, having as criterion the age of PHV: PHV1 age below than 25th percentile, PHV2 = age between 25th to 50th percentile, PHV3 = age between 50th to 75th percentile and PHV4 = age above 75th percentile. A significant main effect between groups was observed for squat jump (SJ) (p = 0.005), countermovement jump (CMJ) (p = 0.001), sprint 40m (sprint20+20m) (p = 0.013) and sprint 20m (sprint20m) (p = 0.007). In conclusion, becomes important to assess the maturity status in young soccer players due the determinant abilities of match can be predict by maturation age through PHV measurement.

Esta bem estabelecido na literatura que o treinamento de forca (TF) e uma modalidade eficiente para aumentar a massa muscular, reduzir gordura e melhorar a saude de forma geral em varias populacoes. O objetivo do estudo foi comparar o efeito de dois microciclos no TF com os protocolos de 20 e 40 series semanais por grupo muscular, se existe alteracao na carga total levantada (CTL), fadiga, recuperacao, bem-estar e afetividade em sujeitos treinados. 28 homens higidos (idade: 23,1 ± 4,7 anos; massa corporal: 75,6 ± 10,9 kg; estatura: 176 ± 7 cm). Todos os sujeitos eram treinados em forca, isto e, praticavam TF sistematicamente, pelo menos tres sessoes por semana, ha pelo menos um ano (experiencia de treinamento: 3,3 ± 2,1 anos; frequencia semanal: 5,0 ± 0,8; forca relativa supino: 1,2 ± 0,1; forca relativa agachamento: 1,7 ± 0,2). Este estudo seguiu um delineamento de 2 semanas e foi randomizado de forma aleatoria para um dos dois grupos: 20 series semanais por grupo muscular (G20, n = 15) e 40 series semanais por grupo muscular (G40, n = 13). Para o programa de TF, consistiu em 9 exercicios direcionados a cada um dos principais grupos musculares, sendo dividido entre treino A e B que era repetido duas vezes na semana, durante duas semanas. Foi feito o monitoramento da carga total levantada (CTL), percepcao subjetiva da fadiga (PSF), percepcao subjetiva da recuperacao (PSR), percepcao subjetiva do bem-estar (PBE), escala da afetividade (EA). Para CTL foi observado um efeito significante do tempo (p 0,05). Conclui-se que individuos treinados em forca podem aumentar a CTL em ~9% na segunda semana apos o inicio da intervencao, acompanhado por um aumento na percepcao de recuperacao e bem-estar e sem promover alteracoes na afetividade e na percepcao de fadiga.

O objetivo do presente estudo foi verificar a influencia do ciclo menstrual (CM) no monitoramento de aulas de Zumba®. Participaram 8 mulheres (idade = 33,1 ± 5,2 anos; estatura = 162 ± 9 cm; massa corporal = 68,1 ± 7,2 kg) entre 18 a 45 anos de uma academia de ginastica com experiencia de no minimo 3 meses na modalidade. As voluntarias realizaram 5 aulas de Zumba® (1 aula piloto e as 4 aulas experimentais). As mesmas foram alocadas de 10 em 10 dias de maneira a contemplar todas as fases do ciclo menstrual de 21 a 35 dias (fase folicular [FF], ovulatoria [FO] e lutea [FL]). Como instrumentos de monitoramento foram utilizadas a escala de percepcao do bem estar (PBE), variabilidade da frequencia cardiaca em repouso (VFC), percepcao subjetiva de esforco (PSE), escala de afetividade (EA) e impulso de treinamento (TRIMP) pela frequencia cardiaca. Os resultados demonstraram que a FL aumenta a PSE em relacao a FO e FL (p 0,05). Conclui-se que as fases do ciclo menstrual alteram a percepcao subjetiva de esforco e carga interna de treinamento em aulas de Zumba®.

de Camargo, JBB, Braz, TV, Batista, DR, Germano, MD, Brigatto, FA, and Lopes, CR. Dissociated time course of indirect markers of muscle damage recovery between single-joint and multi-joint exercises in resistance-trained men. J Strength Cond Res XX(X): 000-000, 2020-This study compared the time course of indirect markers of muscle damage after multi-joint and single-joint exercises. Ten resistance-trained men (years: 26.9 ± 3.0; total body mass: 83.2 ± 13.8 kg; height: 176 ± 7.0 cm; resistance training [RT] experience: 5.5 ± 2.4 years; RT frequency: 5.3 ± 0.7 sessions; relative squat 1 repetition maximum: 1.4 ± 0.3) performed, in a random order, 5 sets of 8 repetition maximum of the back squat (BS) and knee extension (KE) exercises. Rectus femoris muscle thickness (MTRF), leg circumference (LC), and muscle soreness (MS) were recorded at baseline (pre), 0, 12, 24, and 36 hours after each exercise protocol. There was a significant increase (p < 0.05) in dependent variables at every time point after both the multi-joint and single-joint exercise sessions. However, MTRF and LC were greater at 0 and 36 hours, and MS was greater at 24 and 36 hours after BS when compared with KE (all p < 0.05). This study shows that resistance-trained individuals can experience significant higher levels of indirect markers of muscle damage when performing a multi-joint lower-limb exercise compared with a single one.

The purpose of this study was to investigate the chronic effects of training muscle groups, through a split-body routine on 2 versus 3 days per week, on neuromuscular performance and morphological adaptations in resistance-trained men with the number of sets per muscle group equated between conditions. Twenty healthy men (28.8 ± 6.1 years [range 19 to 37 years]; 172.8 ± 5.1 cm; total body mass = 70.2 ± 7.4 kg; RT experience = 3.5 ± 0.8 years [range 2 to 5 years]; RT frequency = 4.4 ± 0.5 session·wk-1) volunteered to participate in this study. Subjects were randomly assigned into 2 experimental groups: (1) 2 sessions·wk-1 per muscle (G2x, n = 10), in which every muscle was trained twice a week with 9 sets or (2) 3 sessions·wk-1 per muscle (G3x, n = 10), in which every muscle was trained thrice a week with 6 sets. All other variables were held constant over the 8-week study period. No significant difference between conditions for maximal strength in the back squat and bench press, muscle thickness of the biceps brachii, triceps brachii, vastus lateralis and anterior quadriceps (rectus femoris and vastus intermedius) was detected. In conclusion, both G2x and G3x significantly enhance muscular adaptations, with a similar improvement noted between experimental conditions.

The adoption of resistance training (RT) programs has been shown to positively influence sports performance-related parameters. However, the chronic effects of maximal strength protocols on the performance of soccer players are not completely investigated. The aim of this study was to evaluate the effects of performing two repetition maximum (2RM) before a resistance training session on the physical performance of youth soccer players. Seventeen players (under-20 category) were allocated in one of the following groups: 2RM + resistance training group (2RM + RT, n = 8) and resistance training group (RTG, n = 9). Both groups performed the same RT protocol during experimental weeks. However, the 2RM + RT performed 1 set of 2RM for 4 exercises, previously to RT protocol. Pre and post intervention period, one repetition maximum of the back squat exercise (1RM(SQUAT)), sprint time (15m-sprint test), countermovement jump (CMJ), repeated sprint ability (RSA(BEST) and RSA(MEAN)), and yo-yo intermittent recovery test level-2 (YYIRT2) were assessed. Total load lifted (TLL) during the experimental weeks was also collected. Significant increases in 1RM(SQUAT) (2RM + RT: +45.1%, d = 4.40; RTG: +32.3%, d = 1.84), 15m sprint (2RM + RT: −9.0%, d = 7.9; RTG: −8.8%%, d = 3.2), CMJ (2RM + RT: +2.3%, d = 0.17; RTG: +0.8%, d = 0.07), RSA(BEST) (2RM + RT: −2.4%, d = 0.6; RTG: −2.3%, d = 1.04), RSA(MEAN) (2RM + RT: −2.9%, d = 1.33; RTG: −3.4%, d = 1.78), YYIRT2 (2RM + RT: +12.0%, d = 0.82; RTG: +12.1%, d = 0.63) (all p < 0,05) were observed for both groups on pre to post-intervention periods, with no significant difference between groups. Therefore, the 2RM + RT protocol did not promote additional increase on performance of young soccer players.

Physical inactivity is main cause of disease worldwide. Identify the physical exercise preference, resulting in increases adherence and future intention to perform physical activity. The preference of the intensity of exercise questionnaire (PRETIE-Q) is the main tool used to assess preference in physical exercise. Variables as age, body mass index (BMI), usual physical activity level (PAL), maximal oxygen uptake (VO2máx), can influence in PRETIE-Q answers. The purpose of this study was investigate if there is relation between preference for exercise intensity with maximal aerobic speed (MAS), PAL and heart rate variability (HRV) in postmenopausal women phase. Participated of study 30 subjects who answer PRETIE-Q together with analyses of MAS, PAL and HRV. Preference was large correlated with MAS (r = 0.63), PAL (r = 0.57) and HRVRMSSD (r = 0.52). Together, MAS (40.4%), PAL (10.7%) and HRVRMSSD (6.4%) explained 57.5% of the preference score. This results study allow to health professional, that prescribe physical exercise, understand that subjects with high aerobic capacity, cardiovagal modulation and usual PAL will have preference for high intensity exercise. In consequence, can increase the adherence to systematic practice of physical exercise. Conclude that preference of exercise intensity for women in postmenopausal phase is related with aerobic capacity, high HRV and physical activity level.

BACKGROUND The present study investigated the mid-term effects of training muscle groups once- versus twice-daily on morphofunctional adaptations in trained men. METHODS Participants were randomly assigned to 1 of 2 experimental groups: 1 daily session per muscle group (1S, n = 11), where every muscle group was trained once a day or 2 daily sessions per muscle group (2S, n = 12), where every muscle group was trained twice. Testing was conducted before intervention and after 8 weeks for maximal strength (1RM) and muscular endurance (60%1RM) for bench press and parallel back squat exercises, and muscle thickness (MT) of the biceps brachii, triceps brachii, vastus lateralis, anterior quadriceps and pectoralis major. RESULTS The major findings were as follows: (a) the increase in 1RM back squat was significantly greater in 2S (Δ=16.1%) compared to 1S (Δ=7.8%) (p

Germano, MD, Sindorf, MAG, Crisp, AH, Braz, TV, Brigatto, FA, Nunes, AG, Verlengia, R, Moreno, MA, Aoki, MS, and Lopes, CR. Effect of different recoveries during HIIT sessions on metabolic and cardiorespiratory responses and sprint performance in healthy men. J Strength Cond Res 36(1): 121-129, 2022-The purpose of this study was to investigate how the type (passive and active) and duration (short and long) recovery between maximum sprints affect blood lactate concentration, O2 consumed, the time spent at high percentages of V̇o2max, and performance. Subjects were randomly assigned to 4 experimental sessions of high-intensity interval training exercise. Each session was performed with a type and duration of the recovery (short passive recovery-2 minutes, long passive recovery [LPR-8 minutes], short active recovery-2 minutes, and long active recovery [LAR-8 minutes]). There were no significant differences in blood lactate concentration between any of the recoveries during the exercise period (p0.05). The LAR presented a significantly lower blood lactate value during the postexercise period compared with LPR (p0.01). The LPR showed a higher O2 volume consumed in detriment to the active protocols (p0.001). There were no significant differences in time spent at all percentages of V̇o2max between any of the recovery protocols (p0.05). The passive recoveries showed a significantly higher effort time compared with the active recoveries (p0.001). Different recovery does not affect blood lactate concentration during exercise. All the recoveries permitted reaching and time spent at high percentages of V̇o2max. Therefore, all the recoveries may be efficient to generate disturbances in the cardiorespiratory system.

The aim of the present study was to assess the short-term effects of four weeks of beta-alanine supplementation (BA) (6.4 g/day) on the total volume performed and perceived effort of resistance-trained individuals. Sixteen trained men (age: 27.3 ± 5.0 years, height: 1.78 ± 0.1 cm, total body mass: 84.3 ± 8.4 kg, RT experience: 5.9 ± 3.3 years) were allocated in one of the following groups: BA or Placebo (PLA). In addition, during the same period, participants were submitted to a resistance training program. Volume index (VI) and the rate of perceived exertion (RPE) were collected during the experimental period for both groups. Significant increases from the first to the last intervention week in VI were observed only for BA (+6.5%, d = 0.61, p = 0.04). In addition, supplementation induced a lower mean RPE (BA: 8.8 ± 0.5 AU vs. PLA: 9.4 ± 0.3 AU, p = 0.02). In conclusion, four weeks of BA supplementation were able to increase resistance-training volume without affecting the perceived effort of trained men.

Objective: To compare the effects of different resistance training programs on measures of muscle strength and hypertrophy. Methods: Sixty-seven untrained subjects were randomized to one of two groups: Split Workout Routine (n=35), in which muscle groups were trained twice per week in an A/B split consisting of eight sets per session, or Full-Body Workout Routine (n=32), in which muscle groups were trained four times per week with four and eight sets per session. Both groups performed eight to 12 repetition maximum per set, with 60 seconds of rest between sets. Maximal strength and muscle thickness were assessed at baseline and after eight weeks of training. Results: A significant main effect of time (pre versus post) was observed for maximal strength in the bench press and squat exercises and thickness of the elbow extensor, elbow flexor and quadriceps femoris muscles. Selected variables did not differ significantly between groups. Conclusion: Resistance training twice or four times per week has similar effects on neuromuscular adaptation, provided weekly set volume is equal. RESUMO Objetivo: Comparar os efeitos de diferentes rotinas de treinamento em medidas de força e hipertrofia muscular. Métodos: Foram distribuídos em dois grupos de treinamento 67 indivíduos não treinados: Rotina Distribuída (n=35), com os grupos musculares treinados duas vezes por semana em uma divisão A/B com oito séries por sessão, ou Rotina de Corpo Inteiro (n=32), com os grupos musculares treinados quatro vezes por semana com quatro e oito séries por sessão de treinamento. Ambos os grupos realizaram de oito a 12 repetições máximas por série, com intervalo de 60 segundos entre as séries. A força e a espessura muscular máximas foram avaliadas no início e após oito semanas de treinamento. Resultados: Observaram-se diferenças significativas considerando o tempo (pré versus pós) para força máxima no supino, agachamento e espessura muscular de extensores do cotovelo, flexores do cotovelo e músculos do quadríceps femoral. Não foram observadas diferenças significativas entre os grupos para nenhum dos parâmetros avaliados. Conclusão: O treinamento de força realizado duas ou quatro vezes por semana com volume de séries equalizado promove adaptações neuromusculares similares.

Brigatto, FA, Braz, TV, Zanini, TCdC, Germano, MD, Aoki, MS, Schoenfeld, BJ, Marchetti, PH, and Lopes, CR. Effect of resistance training frequency on neuromuscular performance and muscle morphology after 8 weeks in trained men. J Strength Cond Res 33(8): 2104-2116, 2019-The purpose of this study was to investigate the chronic effects of training muscle groups 1 day per week vs. 2 days per week on neuromuscular performance and morphological adaptations in trained men with the number of sets per muscle group equated between conditions. Participants were randomly assigned in 2 experimental groups: 1 session·wk per muscle group (G1, n = 10), where every muscle group was trained once a week with 16 sets or 2 sessions·wk per muscle group (G2, n = 10), where every muscle group was trained twice a week with 8 sets per session. All other variables were held constant over the 8-week study period. No significant difference between conditions for maximal strength in the back squat or bench press, muscle thickness in the elbow extensors, elbow flexors, or quadriceps femoris, and muscle endurance in the back squat and bench press performed at 60% 1 repetition maximum was detected. Effect size favored G2 for some outcome measurements, suggesting the potential of a slight benefit to the higher training frequency. In conclusion, both G1 and G2 significantly enhance neuromuscular adaptations, with a similar change noted between experimental conditions.

Few elderly meet current physical activity (PA) guidelines. The limitations for PA adherence is due the barriers found such as displeasure, discomfort, pain and sense of exhaustion. Self-selected exercise has been strategy for PA adherence, due greatest tolerance by aerobic exercise practitioners. The aim of this study was investigate physiological and psychological responses in prescribed and self-selected sessions in postmenopausal women. It was recruited 27 women active. The study consisted 3 moments: familiarization, self-selected, prescribed sessions. The intensity of self-selected session was replicated in prescribed session. There was significant main effect of the time for HR (p=0,047), FS (p=0,009) and Borg scale (p=0,012). Session by time interaction the significant main effect in HR (p

Objective: To analyze the effects of whole body electrostimulation (WB-EMS) with body weight training on functional fitness and body composition of older men.Methods: Twenty physically inactive older men were randomized into: Control group (control), performed the body weight exercise training wearing electrostimulation clothing, but without receiving electrical current stimuli (n = 10), and body weight associated with whole body electrostimulation group (BW+WB-EMS), performed the body weight exercise training wearing electrostimulation clothing plus whole body electrostimulation (n = 10). The training sessions were performed twice a week for 6 weeks and included eight exercises using body weight, performed in two sets of eight repetitions. Physical function was assessed using a battery composed of seven tests, six derived from the Senior fitness test and a handgrip strength test. We also measured the muscle thickness (MT) of the biceps and triceps brachii and vastus lateralis.Results: The BW+WB-EMS group presented increased (p < 0.05) performance in the 30-s chair stand test (10.2 ± 3.3 vs. 13.8 ± 5.0 reps), arm curl (16.6 ± 3.9 vs. 19.9 ± 6.1 reps), 6-min walk test (402 ± 96 vs. 500 ± 104 m), and handgrip strength test (30 ± 11 vs. 32 ± 11 kgf). The BW+WB-EMS group also presented increased MT (p < 0.05) in the biceps brachii (17.7 ± 3.0 vs. 21.4 ± 3.4 mm), triceps brachial (14.7 ± 3.6 vs. 17.5 ± 4.1 mm), and vastus lateralis muscles (15.1 ± 2.6 vs. 18.6 ± 4.3 mm). Moderate correlations were found in arm curl (p = 0.011, r = 0.552) but not handgrip strength (p = 0.053, r = 0.439) with changes in the biceps MT. Moderate changes in the 6-min walk distance were significantly correlated with changes in vastus lateralis MT (p = 0.036, r = 0.471). There was a moderate correlation between the changes in the 30-s chair stand test (p = 0.006, r = 0.589) and changes in the vastus lateralis MT. Furthermore, although a moderate correlation (r = 0.438) was found between triceps MT and handgrip strength no significant difference (p = 0.053) was reported. Additionally, there were no statistical differences in any parameters for the control group.Conclusion: WB-EMS with body weight training increased functional fitness and MT in physically inactive older men.

Aging is characterized by a progressive decline in function and morphological aspects of biological tissues, with especial regards to cardiovascular and musculoskeletal systems. In this sense, exercise has been shown to strongly counteract these aging-induced detrimental effects. Endurance exercise (EE) has been shown to reduce the rate of decline of factors related to cardiorespiratory fitness. In addition, the adoption of resistance training (RT) may also induce relevant adaptations, especially related to increased muscle strength and power levels, that have shown to positively influence functional aspects as improved balance and reduced risk of falls in the elderly population. Then, the aim of the present study is to briefly review the exercise literature regarding its mechanisms that could potentially present “antiaging” effects.

The purpose was to investigate the relationship between internal training load (ITL), external training load (ETL) and heart rate variability (HRV) in women. 16 women (48.2 ± 6.4 yrs) performed HRV recordings (i.e. lnRMSSD - cardiovagal modulation) and Incremental Shuttle Walk Test (ISWT) before and after 12 aerobic training sessions. HRV threshold (HRVT) were used to prescribe aerobic ETL. The session rating of perceived exertion (s-RPE) was analyzed and served as the measure of ITL. The score found for ITL in the 12 sessions was 2878 ± 380 arbitrary units and ETL were 36822 ± 5852 m. A significant difference was observed in the lnRMSSD (3.14 ± 0.30 vs. 3.43 ± 0.38 ms−1; P = 0.001). There were observed large correlation between lnRMSSD at baseline vs ISWT (r = 0.73, P = 0.001), HRVT (r = 0.67, P = 0.004) and ITL (r = 0.62, P = 0.011). Very large correlation between individual smallest worthwhile change lnRMSSD after training and ITL (r = 0.81, P = 0.0001) was observed. There is a strong association between the HRV and aerobic performance (HRVT and ISWTdistance) and strong relationship between HRV and the potential to accumulate ITL, but not aerobic ETL in women. RESUMO O objetivo foi investigar a relação da carga interna de treinamento (CIT), carga externa de treinamento (CET) e variabilidade da frequência cardíaca (VFC) em mulheres. 16 mulheres (48,2 ± 6,4 anos) realizaram medidas de VFC em repouso (variável lnRMSSD - modulação cardiovagal) e o teste incremental de caminhada (TIC) antes e depois de 12 semanas de treinamento aeróbio. O limiar da VFC (LVFC) foi utilizado para prescrição da CET. A percepção subjetiva de esforço (PSE) foi utilizada para cálculo da CIT. O valor de CIT encontrado nas 12 sessões foi de 2878 ± 380 unidades arbitrárias e para CET de 36822 ± 5852 m. Foi observada diferença significativa para lnRMSSD (3,14 ± 0,30 vs. 3,43 ± 0,38 ms−1; P = 0.001). Verificou-se uma correlação grande entre lnRMSSD basal e TIC (r = 0.73, P = 0.001), LVFC (r = 0.67, P = 0.004) e CIT (r = 0.62, P = 0.011). Foi encontrada uma correlação muito grande entre a mínima diferença detectável individual do lnRMSSD após treinamento e CIT. Conclui-se que há uma forte relação entre VFC e performance aeróbia (LVFC e TICdistância), VFC e acúmulo de CIT, porém, sem relação com a CET acumulada nas 12 semanas nas mulheres estudadas.

Brigatto, FA, Lima, LEdM, Germano, MD, Aoki, MS, Braz, TV, and Lopes, CR. High resistance-training volume enhances muscle thickness in resistance-trained men. J Strength Cond Res XX(X): 000-000, 2019-This study investigated the effects of different volumes of resistance training (RT) (8 weeks of 16, 24, and 32 weekly sets per muscle group) on muscular strength and hypertrophy. Subjects were pair-matched according to baseline strength and then randomly assigned to 1 of 3 experimental groups: 16 weekly sets per muscle group (G16, n = 9), 24 weekly sets per muscle group (G24, n = 9), or 32 weekly sets per muscle group (G32, n = 9). All other RT variables (e.g., exercise performed, exercise order, weekly frequency, range of repetitions, rest interval between sets and exercises, etc.) were maintained constant. The total load lifted was calculated for every RT session to compare the accumulated external training load among experimental groups across the intervention period. Testing was conducted before intervention (pre) and after 8-week (post-8) periods for maximal voluntary muscle strength (1 repetition maximum [1RM] test for bench press and parallel back squat exercises) and muscle thickness (MT) of the biceps brachii, triceps brachii, and vastus lateralis. The major findings were as follows: (a) all RT volumes increased bench press and parallel back squat 1RM and (b) all RT volumes increased the biceps brachii, triceps brachii, and vastus lateralis MT. The magnitude of increase in 1RM and MT of the lower body when training with 32 weekly sets per muscle group was higher than for 16 weekly sets per muscle group. The magnitude of the increase in MTTB was higher when training with 32 weekly sets than for 16 weekly sets.

OBJECTIVES: The aim of this study was to evaluate the effects of 8 weeks of strength training (ST) combined with whole-body electrical stimulation (EMS) on morphofunctional adaptations in active individuals. METHODS: Fifty-eight volunteers were randomly distributed into the following groups: an untrained control (UN) group (n=16), an ST group (n=21) or an ST combined with EMS (ST+EMS) group (n=21). Both intervention groups (the ST and ST+EMS groups) performed 3 exercises (biceps curl, back squats and high-pulley tricep extensions) twice a week for 8 weeks. The subjects performed 3 sets of 8 to 12 maximum repetitions (MRs) with a 90-second rest duration between sets. The ST+EMS group performed the resistance training exercises wearing a whole-body suit that provided electrical stimulation at frequencies between 80-85 Hz, with a continuously bipolar impulse duration and pulse breadth of 350 µs. The intensity for each muscle group was controlled by Borg’s category ratio (CR)-10 scale; the intensity started at 5-6 and eventually reached 7-8. One-repetition maximum strength (1RM) and muscle thickness (MT) were measured before and after the training intervention. MT was evaluated in the biceps brachii (BB), triceps brachii (TB), and vastus lateralis (VL). RESULTS: No differences (p>0.05) were found between the ST and ST+EMS groups. Improvements (p

Purpose: It is well established that physical exercise, in general, decreases anxiety and depression. Para sport or sport for people with disabilities is used as a rehabilitation strategy to improve their quality of life. This study aimed to investigate people with disabilities who practise wheelchair fencing, sedentary people with physical disability and conventional fencers, assessed by Short Form 36 (SF-36), by comparing the groups. Method: Forty-two people from Physical Disability Association of Parana (ADFP) answered SF-36 and were divided into three groups: Conventional Fencers (CF), Wheelchair Fencers (WF), and Sedentary People with Physical Disability (SD). Results: This study was the first to report the Health-Related Quality of Life (HRQOL) of conventional fencers, wheelchair fencers, and sedentary people with physical disability, using SF-36. The data demonstrated high scores in CF and WF, on seven SF-36 scales of the eight-scale profile, including functional and mental health, role physical, bodily pain, general health perception, vitality, social functioning, mental health. Moreover, the sedentary group had lower scores in most of the domains when they were compared to CF. Conclusion: The results might provide supportive evidence that HRQOL of WF has demonstrated a positive effect on people with disability since para sport has been used as a rehabilitation programme. Implication : The implementation of a public campaign is recommended, about sport as a health promoter for disability and rehabilitation. By involving healthcare providers from the area, people with disabilities can be encouraged to participate in para sport.