Abstract：
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.
journal_name
Gait Posturejournal_title
Gait & postureauthors
Farrokhi S,Jayabalan P,Gustafson JA,Klatt BA,Sowa GA,Piva SRdoi
10.1016/j.gaitpost.2017.05.015subject
Has Abstractpub_date
2017-07-01 00:00:00pages
129-133eissn
0966-6362issn
1879-2219pii
S0966-6362(17)30198-4journal_volume
56pub_type
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