Concurrent Strength and Endurance Training

Leveritt, Michael; Abernethy, Peter J.; Barry, Benjamin K.; Logan, Peter A.

doi:10.1519/00124278-200308000-00013

Cited by 59 publications

(117 citation statements)

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“…Although it appears that maximal strength and power can be maintained at pre-season levels for long in-season periods (6,19). There are two other possible explanations for this decay in lower body strength.…”

Section: Discussionmentioning

confidence: 99%

Variable Changes in Body Composition, Strength and Lower-Body Power During an International Rugby Sevens Season

Mitchell

Pumpa

Williams³

et al. 2016

Journal of Strength and Conditioning Research

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http://www.canberra.edu.au/researchrepository/items/04454bad-cbdb-461a-bf25-6784c5fd65cd/1/ Copyright: ©2016 National Strength & Conditioning Association Version:This is the non-final version of an article that was accepted for publication in the Journal of Strength and Conditioning Research, which has been published at http://doi.org/10.1519/JSC.0000000000001188 . Changes resulting from the publishing process may not be reflected in this document. ABSTRACTThis study determined whether body composition, strength and power changes that occur during pre-season can be maintained during an international rugby sevens season. Fourteen male international rugby sevens players (age 21.4 ± 2.2 y; mean ± SD) were categorized as a forward (n=7) or back (n=7), and assessed for height, mass (M), skinfolds (S) (∑7), upper body (UB) strength, lower body (LB) strength and LB power. Bench press, back squat and a countermovement jump were used to measure strength and power at three time points: initial, early season and late season. Forwards were taller (185 ± 4cm), heavier (95 ± 6kg) and possessed a greater lean body mass (55.5 ± 4.0 M·S -0.14 ) than backs (181 ± 8cm, 88.5 ± 5.5kg, 51.9 ± 3.4 M S -0.14 ). Over the full season, small (~5% ± 5%; mean ± 90% confidence limits) positive changes occurred in body composition. LB strength gained during the pre-season decayed in-season, whereas UB strength increased moderately (~10% ± 3%) across the season. Power showed inconsistencies between measured variables with a moderate positive change across the season in mean velocity and relative peak power. Forwards showed a small decrease in peak power (relative and absolute). Moderate changes were observed in mean power over the season, forwards decreasing (~6% ± 6%) and backs increasing (~8% ± 6%). Rugby sevens forwards in this study found it difficult to maintain and improve power qualities in-season.Training loads of forwards and backs should be differentiated to maximize strength and power inseason. KEY WORDSPre-season, in-season, back squat, bench press, countermovement jump

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Section: Discussionmentioning

confidence: 99%

Variable Changes in Body Composition, Strength and Lower-Body Power During an International Rugby Sevens Season

Mitchell

Pumpa

Williams³

et al. 2016

Journal of Strength and Conditioning Research

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“…Atletas e indivíduos fisicamente ativos, freqüentemente, combinam a utilização de exercícios de endurance com exercícios de força na mesma sessão de treino (1,2) . Essa estratégia, extremamente difundida, é denominada treinamento concorrente.…”

Section: Introductionunclassified

“…De modo geral, as pesquisas demonstram que o treino de força não afeta a execução do subseqüente treino de endurance (1,3) . Por outro lado, a maioria dos estudos que investigaram o treinamento concorrente verificou a existência de um efeito adverso da atividade de endurance sobre o posterior desempenho de força (4)(5)(6)(7)(8) .…”

Section: Introductionunclassified

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Treino de corrida não interfere no desempenho de força de membros superiores

Raddi

Gomes

Charro³

et al. 2008

Rev Bras Med Esporte

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RESUMOObjetivo: O presente estudo avaliou o efeito do exercício de endurance (corrida) sobre o subseqüente desempenho de força de músculos dos membros superiores e do tronco. Metodologia: A amostra foi composta por 13 universitárias, saudáveis e fisicamente ativas. A primeira fase do experimento consistiu na realização de um teste de corrida, simulando uma sessão de treino, com duração de 45 minutos a 70% da FC MAX . Imediatamente após a corrida, foram aplicados testes de força (dinamometria -preensão palmar, teste de 1-RM e teste de repetições máximas a 70%-1RM no supino). A glicemia foi mensurada no início do experimento e imediatamente antes dos testes de força. Resultados: Não foi observada diferença significativa no desempenho dos testes de força após o treino de corrida (dinamometria, 1-RM e REPMAX -sem a prévia execução do treino de corrida -29,9 ± 3,8 kgf; 34,4 ± 3,1 kg; 1 o set: 12,5 ± 3,3 reps e 2 o set: 11,7 ± 2,7 reps vs. com a prévia execução do treino de corrida -29,2 ± 3,1 kgf; 33,9 ± 2,5 kg; 1 o set: 13,2 ± 2,1 reps e 2 o set: 12,2 ± 2,8 reps). Com relação à glicemia, não foi detectada alteração significativa durante o experimento. Conclusão: A execução do treino de corrida não afetou o subseqüente desempenho de força dos membros superiores e do tronco. Esse dado sugere que a interferência, freqüentemente, observada no exercício concorrente, é dependente do grupo muscular treinado. Possivelmente, o efeito adverso induzido pelo treino concorrente, realizado, exclusivamente, com membros inferiores, é decorrente da fadiga residual instalada nos músculos recrutados na atividade anterior. É importante ressaltar que a atividade de endurance não promoveu alteração na concentração plasmática de glicose. A manutenção da glicemia associada à ausência de interferência sobre o desempenho dos testes de força reforça, mais ainda, a hipótese de que o efeito adverso do treinamento concorrente é, provavelmente, causado por alterações periféricas músculo-específicas.Palavras-chave: treinamento concorrente, interferência, endurance, força. ABSTRACTAim: the present study evaluated the effect of endurance exercise (running) on the subsequent strength performance of muscles of upper limbs and trunk. Methodology: Thirteen healthy female, university students, physically active were selected to compose the sample. The first phase of the experiment the subjects were submitted to an endurance exercise bout (treadmill), simulating a training session, with duration of 45 minutes at 70% of the HR max . Immediately after the endurance exercise bout, the subjects performed strength tests (Dynamometry test -handgrip, 1RM test and maximal repetitions test at 70%-1RM in the bench press). Glycemia was measured in the beginning of the experiment and immediately before the strength tests. Results: No significant difference was observed in the strength tests performance after the endurance exercise bout (Dynamometry, 1-RM and REPMAX -with no previous endurance exercise -29.9 ± 3.8 kgf; 34.4 ± 3.1 kg; 1 st set 12.5 ± 3.3 reps and 2 nd ...

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“…Muscle glycogen and triglycerides stores depend on the training state of subjects that are probably linked to their usual physical activity, and the intensity of exercise during PEL. Decreased muscle glycogen store may be associated with fatigue and decrease in exercise intensity (Leveritt et al, 1999).The activity of the sympathetic nervous system is stimulated and liver glycogenolysis and gluconeogenesis are enhanced. Plasma glucose utilization is also increased during exercises, which tends to lower glycaemia (Romijn et al, 1993).…”

Section: Discussionmentioning

confidence: 99%

The extent to which breakfast covers the morning energy expenditure of adolescents with varying levels of physical activity

Vermorel

Bitar²,

Vernet

et al. 2003

Eur J Clin Nutr

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Background: Energy intake at breakfast affects the performance of creativity tests, memory recall and voluntary physical endurance in children before lunch, and food craving during the whole day. Objectives: To assess the adequacy of breakfast energy supply (BES) and energy expenditure (EE) in adolescents during a schoolday without or with 2 h of physical education lesson (PEL) in the morning. Design: Sixty adolescents (four groups of 14-16 boys and girls aged 12-16 y) participated in a cross-sectional study. Activity patterns and EE were determined by whole-body calorimetry during 36 h and in free-living conditions during 5 days using both a diary and the validated heart rate recording method. BES was determined by weighing individual foods. The pyloric energy flow was assessed using a model of fractional stomach emptying. Results: BES averaged 24.9% (s.d. ¼ 6.1) of daily EE in the four groups of subjects. It covered the mean morning EE on a schoolday without PEL, but not in a schoolday with 2 h of PEL in any group. When PEL took place from 8-10 am the cumulative EE exceeded the cumulative pyloric energy flow after 105-150 min, that is during the PEL session, and the energy deficit increased until lunch. With a light breakfast (BES 7 1 s.d.) energy deficiency happened after 90 min. Conclusion:The results stress the need for a heavy breakfast for children and adolescents on the days with PEL in the morning, and a carbohydrate rich snack at 10 am to improve attention, memory and willing participation in physical activities.

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Concurrent Strength and Endurance Training

Cited by 59 publications

References 0 publications

Variable Changes in Body Composition, Strength and Lower-Body Power During an International Rugby Sevens Season

Variable Changes in Body Composition, Strength and Lower-Body Power During an International Rugby Sevens Season

Treino de corrida não interfere no desempenho de força de membros superiores

The extent to which breakfast covers the morning energy expenditure of adolescents with varying levels of physical activity

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