Efeitos agudos de sessões de treino concorrente com remoergômetro em variáveis fisiológicas e de desempenho / Efectos agudos de sesiones de entrenamiento concurrente con remoergómetro en variables fisiológicas y desempeño / Acute effects of concurrent training with rowing ergometer on physiological and performance variables

Objetivo: Comparar respostas fisiológicas e de desempenho em sessões de treinamento concorrente com diferentes ordens de execução.Método: Foram envolvidas 13 mulheres (20 a 40 anos), as quais realizaram estímulo de força, composto por agachamento, levantamento terra e remada curvada, (3 X 10 repetições), e estímulo aeróbio, no remoergômetro (2 X 10 min / 85% da frequência cardíaca de reserva - recuperação de 5 min). Os tipos de esforços foram realizados em duas ordens distintas Força + Aeróbio ou Aeróbio + Força - 10 minutos de intervalo. Mensurara-se perceção subjetiva de esforço, frequência cardíaca, concentração de lactato e potência nos exercícios realizados.Resultados: Para frequência cardíaca e percepção subjetiva de esforço, não foram constatadas diferenças entre treinos. Não foram observadas diferenças entre treinos para potência nos exercícios de força. Na análise da potência no treino aeróbio, foram identificadas diferenças entre treinos (F (1.12) = 4.1; p= 0.03) e entre séries (F (1.12) = 4.1; p= 0.03), com interações significantes (F (1.12) = 2.81; p= 0.04), com menor produção de potência no treino aeróbio quando realizado após o treino de força. Foram encontradas diferenças entre momentos e grupos na concentração de lactato, com maior valor nos treinos de força em relação ao aeróbio (6.19±0.1 mmol/l e 4.34±0.2 mmol/l, respetivamente).Conclusões: O treinamento concorrente com remoergômetro afetou o desempenho no esforço aeróbio, quando o mesmo foi realizado após o estímulo de força. Para o treinamento de força, parece não ter havido diferenças segundo a ordem de execução. (AU)

Objetivo: Comparar respuestas fisiológicas y de desempeño en sesiones de entrenamiento concurrente con diferentes órdenes de ejecución.Método: Fueron reclutadas 13 mujeres (20 a 40 años), las cuales realizaron estímulo de fuerza, compuesto por sentadilla, peso muerto y remo con barra (3 X 10 repeticiones), y estímulo aeróbico en el remoergómetro (2 X 10 min a 85% de la frecuencia cardíaca de reserva - recuperación de 5 min). Los tipos de esfuerzos fueron realizados en dos órdenes distintas Fuerza + Aeróbico o Aeróbico + Fuerza, - 10 minutos de intervalo. Se mensuraron percepción subjetiva de esfuerzo, frecuencia cardíaca, concentración de lactato y potencia producida.Resultados: Para frecuencia cardíaca y subjetiva de esfuerzo, no fueron constatadas diferencias entre los entrenamientos. No fueron observadas diferencias entre entrenamientos para potencia muscular en los ejercicios de fuerza. En el análisis de potencia en el entrenamiento aeróbico, fueron identificadas diferencias entre entrenamientos (F(1.12)=4.1; p=0.03) y entre series (F(1.12)=4.1; p=0.03), con interacciones significantes (F(1.12)=2.81; p=0.04), con menor producción de potencia en el entrenamiento aeróbico cuando fue realizado después del entrenamiento de fuerza. Fueron encontradas diferencias entre momentos y grupos en la Concentración de Lactato, con mayor valor en los entrenamientos de fuerza en relación al aeróbico (6.19±0.1 mmol/l y 4.34±0.2 mmol/l, respectivamente).Conclusión: El entrenamiento concurrente con remoergómetro afectó al desempeño en el esfuerzo aeróbico, cuando el mismo fue realizado después del estímulo de fuerza. Para el entrenamiento de fuerza, parece no haber producido diferencias según el orden de ejecución. (AU)

Objective: To compare physiological responses and performance in concurrent training considering different execution orders.Method: 13 women were involved (20 to 40 years) in two types of stimuli: strength, composed by back squat, dead lift and bent-over row (three sets of 10 repetitions) and aerobic in rowing ergometer (two sets of 10 min at 85% heart rate reserve - 5 min recovery). The efforts were performed in two orders: strength + aerobic or aerobic + strength, with 10 min intervals in between. Rating of perceived exertion, heart rate, blood lactate threshold and power were measured.Results: For rating of perceived exertion and heart rate no differences were pointed between trainings orders. No differences were found between workouts for power output in strength exercises. The power output analysis in aerobic stimulus showed differences between workouts (F (1.12) = 4.1; p = 0.03) and between sets (F (1.12) = 4.1; p = 0.03), with significant interactions (F (1.12) = 2.81; p = 0.04), post-hoc analysis identified lower power output in aerobic stimulus when performed after strength stimulus. Differences were found between moments and groups in blood lactate concentration, with higher value in strength stimulus when compared to aerobic (6.19 ± 0.1 mmol/l versus 4.34 ± 0.2 mmol/l, respectively). Conclusions: The concurrent training with rowing ergometer affected performance in aerobic effort when it was performed after strength stimulus. For strength training, it seems to have no differences in the execution order. (AU)

Aerobic fitness, upper-body strength and agility predict performance on an occupational physical ability test among police officers while wearing personal protective equipment.

BACKGROUND: Police institutions often use Occupational Physical Ability Tests (OPATs) as a measure of occupational performance. These tests are utilized to mimic the daily and essential tasks performed by the police officers, but few are performed with load carriage (LC). The purpose of this study was to examine the physical performance predictors of an OPAT performed without (NPPE) and with (WPPE) LC. METHODS: Thirteen federal highway police officers (age: 36.8±3.7 years, body mass: 89±10.7 kg, height: 180±5.6 cm) volunteered to complete a battery of physical fitness tests (aerobic power and capacity, muscular endurance, lower limb power, upper limb strength, agility and anaerobic power) and anthropometrics. Occupational performance was measured by the total OPAT time consisting of 7 sequential police tasks. All subjects randomly completed the tests on both LC conditions. RESULTS: Agility (P<0.01), lower limb power and height (P<0.05) were significantly related to performance in the NPPE OPAT. In the WPPE condition, aerobic power (absolute and relative) (P<0.01), lower limb power and agility (P<0.05). The best predictors for OPAT performance were agility (R2=0.45, P<0.01) in the NPPE condition, as well as relative aerobic power, upper limb strength and agility in the WPPE condition (R2=0.81, P<0.01). CONCLUSIONS: Different conditions of LC have distinct occupational performance predictors. Thus, considering LC, physical exercise programs aimed at improving police occupational performance should aim at improving agility, upper limb strength and aerobic fitness.

Biochemical Differences Between Official and Simulated Mixed Martial Arts (MMA) Matches.

BACKGROUND: One of the goals for training in combat sports is to mimic real situations. For mixed martial arts (MMA), simulated sparring matches are a frequent component during training, but a there is a lack of knowledge considering the differences in sparring and competitive environments. OBJECTIVES: The main objective of this study was to compare biochemical responses to sparring and official MMA matches. MATERIALS AND METHODS: Twenty five male professional MMA fighters were evaluated during official events (OFF = 12) and simulated matches (SIM = 13). For both situations, blood samples were taken before (PRE) and immediately after (POST) matches. For statistical analysis, two-way analysis of variance (time x group and time x winner) were used to compare the dependent parametric variables. For non-parametric data, the Kruskal-Wallis test was used and differences were confirmed by Mann-Whitney tests. RESULTS: No significant differences were observed among the groups for demographic variables. The athletes were 26.5 ± 5 years with 80 ± 10 kg, 1.74 ± 0.05 m and had 39.4 ± 25 months of training experience. Primary results indicated higher blood glucose concentration prior to fights for OFF group (OFF= 6.1 ± 1.2 mmol/L and SIM= 4.4 ± 0.7 mmol/L; P < 0.01) and higher ALT values for OFF group at both time points (OFF: PRE = 41.2 ± 12 U/L, POST = 44.2 ± 14.1 U/L; SIM: PRE = 28.1 ± 13.8 U/L, POST = 30.5 ± 12.5 U/L; P = 0.001). In addition, the blood lactate showed similar responses for both groups (OFF: PRE= 4 [3.4 - 4.4] mmol/L, POST= 16.9 [13.8 - 23.5] mmol/L; SIM: PRE = 3.8 [2.8 - 5.5] mmol/L, POST= 16.8 [12.3 - 19.2] mmol/L; P < 0.001). CONCLUSIONS: In conclusion, MMA official and simulated matches induce similar high intensity glycolytic demands and minimal changes to biochemical markers of muscle damage immediately following the fights. Glycolytic availability prior to the fights was raised exclusively in response to official matches.