Article

OBJECTIVE: To determine if lower extremity exercise-induced muscle injury reduces
vascular endothelial function of the upper extremity and if massage therapy (MT)
improves peripheral vascular function after exertion-induced muscle injury.
DESIGN: Randomized, blinded trial with evaluations at 90 minutes, 24 hours, 48
hours, and 72 hours. SETTING: Clinical research center. PARTICIPANTS: Sedentary
young adults (N=36) were randomly assigned to 1 of 3 groups: (1) exertion-induced
muscle injury and MT (n=15; mean age +/- SE, 26.6 +/- 0.3); (2) exertion-induced
muscle injury only (n=10; mean age +/- SE, 23.6 +/- 0.4), and (3) MT only (n=11;
mean age +/- SE, 25.5 +/- 0.4). INTERVENTION: Participants were assigned to
exertion-induced muscle injury only (a single bout of bilateral, eccentric leg
press exercise), MT only (30-min lower extremity massage using Swedish
technique), or exertion-induced muscle injury and MT. MAIN OUTCOME MEASURES:
Brachial artery flow-mediated dilation (FMD) was determined by ultrasound at each
time point. Nitroglycerin (NTG)-induced dilation was also assessed (0.4 mg).
RESULTS: Brachial FMD increased from baseline in the exertion-induced muscle
injury and MT group and the MT only group (7.38%+/-.18% to 9.02%+/-.28%, P<.05
and 7.77%+/-.25% to 10.2%+/-.22%, P<.05, respectively) at 90 minutes and remained
elevated until 72 hours. In the exertion-induced muscle injury only group, FMD
was reduced from baseline at 24 and 48 hours (7.78%+/-.14% to 6.75%+/-.11%, P<.05
and 6.53%+/-.11%, P<.05, respectively) and returned to baseline after 72 hours.
Dilations of NTG were similar over time. CONCLUSIONS: Our results suggest that MT
attenuates impairment of upper extremity endothelial function resulting from
lower extremity exertion-induced muscle injury in sedentary young adults.
CI - Copyright (c) 2014 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS