Τρίτη 17 Μαΐου 2016

Contralateral Repeated Bout Effect of Eccentric Exercise of the Elbow Flexors.

Purpose: This study compared the magnitude of the repeated bout effect for different time intervals between two bouts of eccentric exercise of the elbow flexors to better understand the contralateral repeated bout effect (CL-RBE). Methods: Untrained young men (22.0 +/- 1.8 y) were allocated to either a control or one of seven CL-RBE groups (n=13/group). The CL-RBE groups performed exercise consisting of 30 maximal isokinetic (30[degrees]/s) eccentric contractions of the elbow flexors (ECC1) with either dominant or non-dominant arm followed 0.5 (0.5h), 6 (6h), 12 (12h) and 24 hours (1d), 7 (1wk), 28 (4wk) or 56 days (8wk) by the same exercise (ECC2) using the opposite arm. The control group used the non-dominant arm for ECC1 and ECC2 separated by 2 weeks. Results: Maximal voluntary concentric contraction torque, peak torque angle, range of motion, upper arm circumference, muscle soreness, ultrasound echo-intensity, and plasma creatine kinase activity and myoglobin concentration changed (P8 weeks), and requires a day to be conferred. (C) 2016 American College of Sports Medicine

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