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Revista Brasileira de Medicina do Esporte

versão impressa ISSN 1517-8692versão On-line ISSN 1806-9940


RADDI, Leandro Luís Oliveira et al. Endurance exercise bout does not interfere in strength performance of upper limbs. Rev Bras Med Esporte [online]. 2008, vol.14, n.6, pp.544-547. ISSN 1517-8692.

AIM: 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 HRmax. 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; 1st set 12.5 ± 3.3 reps and 2nd set 11.7 ± 2.7 reps vs. with previous endurance exercise - 29.2 ± 3.1 kgf; 33.9 ± 2.5 kg; 1st set 13.2 ± 2.1 reps and 2nd set 12.2 ± 2.8 reps). Regarding glycemia, no significant alteration was observed during the experiment. CONCLUSION: the endurance exercise bout did not affect the subsequent strength performance of the upper limbs and trunk. This data suggests that the common interference observed in the concurrent training is dependent on which muscular group has been recruited. Possibly, the adverse effect induced by the concurrent training, exclusively performed with lower extremities, is due to the residual fatigue installed in the muscles recruited in the previous activity. It is important to highlight that endurance exercise did not promote alteration in the glucose plasma concentration. The glycemia maintenance associated with the lack of interference on the performance of the strength tests reinforces even more the hypothesis that the adverse effect of the concurrent training is probably caused by muscle-specific peripheral alterations.

Palavras-chave : concurrent training; interference; endurance; strength.

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