Juntendo Medical Journal
Online ISSN : 2188-2126
Print ISSN : 2187-9737
ISSN-L : 2187-9737
Poster Sessions - Locomotive Syndrome
Effect of Combined Increased Physical Activity and Walking with Blood Flow Restriction on Leg Muscle Thickness in Older Adults
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2016 Volume 62 Issue Suppl.1 Pages 206-210


Objective: To investigate the effect of combined increased walking and stair-climbing, and walking with blood flow restriction (BFR) in working muscles on leg muscle thickness in older adults.

Methods: Nineteen older subjects were divided into the following three groups: normal walking and stair-climbing (WS), WS and BFR-walk once a wk (WS-BFR1), and WS and BFR-walk twice a wk (WS-BFR2). All subjects were instructed to walk at a self-selected, faster pace than usual for ≥30 min per session, ≥2-4 days per wk, and climb ≥5 flights of stairs per day, ≥4 days per wk for 11 wk. Additionally, the WS-BFR1 and WS-BFR2 groups performed 20 min of a BFR-walk at a pre-determined exercise intensity of 70-85% of the age-predicted maximum heart rate.

Results: Two-way repeated measures analysis of variance showed that the time effects were significant (p<0.01) for muscle thicknesses (MT) of the posterior aspects of the thigh (PT, WS: 8.9%, WS-BFR1: 11.7%, WS-BFR2: 11.8%) and lower leg (PL, WS: 3.0%, WS-BFR1: 1.1%, WS-BFR2: 6.6%). However, there was no significant difference in these values of MT among all the groups. For the 10-m walking time, the main effect of time was significant (p<0.05), but the interaction was not significant.

Conclusions: Walking and stair-climbing training can increase MT of the PT and PL, and improve walking performance in older adults, whereas a BFR-walk once or twice a wk may not produce additional training effects.

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© 2016 The Juntendo Medical Society. This is an open access article distributed under the terms of Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original source is properly credited.
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