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document
Effects of weight-bearing versus nonweight-bearing exercise on function , walking speed , and position sense in participants with knee osteoarthritis : a randomized controlled trial . OBJECTIVE To investigate whether weight-bearing ( WB ) exercise enhances functional capacity to a greater extent than nonweight-bearing ( NWB ) exercise in participants with knee osteoarthritis . DESIGN Randomized controlled trial . SETTING Kinesiology laboratory . PARTICIPANTS Participants ( N=106 ) were randomly assigned to WB exercise , NWB exercise , or a control group ( no exercise ) . INTERVENTION WB exercise and NWB exercise groups underwent an 8-week knee extension-flexion exercise program . MAIN OUTCOME MEASURES Western Ontario and McMaster Universities Osteoarthritis Index ( WOMAC ) function scale , walking speed , muscle torque , and knee reposition error were assessed before and after intervention . RESULTS Equally significant improvements were apparent for all outcomes after WB exercise and NWB exercise , except for reposition error , for which improvement was greater in the WB exercise group . In contrast , there were no improvements in the control group . CONCLUSIONS Simple knee flexion and extension exercises ( WB and NWB ) performed over 8 weeks resulted in significant improvement in the WOMAC function scale and knee strength compared with the control group . NWB exercise alone may be sufficient enough to improve function and muscle strength . The additional benefit of WB exercise was improved position sense , which may enhance complex walking tasks ( walking on figure of 8 route and spongy surface ) .
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Intervention_Physical
weight-bearing
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Intervention_Physical
nonweight-bearing exercise
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Intervention_Physical
weight-bearing ( WB ) exercise
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Intervention_Physical
nonweight-bearing ( NWB ) exercise
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Intervention_Physical
WB exercise
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Intervention_Physical
NWB exercise
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Intervention_Control
control group ( no exercise )
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Intervention_Physical
WB exercise and NWB exercise groups underwent
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Intervention_Physical
8-week knee extension-flexion exercise program
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Intervention_Physical
WB exercise
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Intervention_Physical
WB
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Intervention_Physical
NWB
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Intervention_Physical
NWB exercise
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Intervention_Physical
WB exercise
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Outcome_Physical
function , walking speed , and position sense
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Outcome_Physical
functional capacity
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Outcome_Physical
Western Ontario and McMaster Universities Osteoarthritis Index ( WOMAC ) function scale , walking speed , muscle torque , and knee reposition error
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Outcome_Physical
reposition error
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Outcome_Physical
WOMAC function scale and knee strength
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Outcome_Physical
function and muscle strength .
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Outcome_Physical
position sense
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Outcome_Physical
complex walking tasks