Article

OBJECTIVE: To evaluate whether knee contact force and knee pain are different
between continuous and interval walking exercise in patients with knee
osteoarthritis (OA). METHODS: Twenty seven patients with unilateral symptomatic
knee OA completed two separate walking exercise sessions on a treadmill at 1.3m/s
on two different days: 1)
a continuous 45min walking exercise session, and 2)
three 15min bouts of walking exercise separated by 1h rest periods for a total of
45min of exercise in an interval format. Estimated knee contact forces using the
OpenSim software and knee pain were evaluated at baseline (1st minute of walking)
and after every 15min between the continuous and interval walking conditions.
RESULTS: A significant increase from baseline was observed in peak knee contact
force during the weight-acceptance phase of gait after 30 and 45min of walking,
irrespective of the walking exercise condition. Additionally, whereas continuous
walking resulted in an increase in knee pain, interval walking did not lead to
increased knee pain. CONCLUSION: Walking exercise durations of 30min or greater
may lead to undesirable knee joint loading in patients with knee OA, while
performing the same volume of exercise in multiple bouts as opposed to one
continuous bout may be beneficial for limiting knee pain.
CI - Copyright (c) 2017. Published by Elsevier B.V.

Langue : ANGLAIS