Massage therapy restores peripheral vascular function after exertion.

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.