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Bieler T, Kristensen ALR, Nyberg M, Magnusson SP, Kjaer M, Beyer N. Exercise in patients with hip osteoarthritis - effects on muscle and functional performance: A randomized trial. Physiother Theory Pract 2021; 38:1946-1957. [PMID: 33956561 DOI: 10.1080/09593985.2021.1923096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Background: It is believed that clinical management of osteoarthritis should address muscle weakness to improve physical function and prevent disability and frailty.Objectives: This sub-study investigated the effects of supervised progressive resistance training (RT), supervised Nordic Walking (NW), and unsupervised home-based exercise (HBE) on muscle and functional performance; and associations between these exercise-induced changes in persons with hip osteoarthritis.Methods: Forty-two patients with hip osteoarthritis were recruited from a larger RCT (NCT01387867). All the groups (RT, n = 15; NW, n = 12; HBE, n = 15) exercised 1 h 3 times/week for 4 months. Quadriceps cross-sectional area (QCSA, MRI-determined); quadriceps strength (QMVC); leg extensor power (LEP); functional performance (chair stands (30sCS); stair climbs (TSC); and 6-minute walk (6MWT)) were assessed at baseline and 4 months.Results: Per protocol analyses (one-way ANOVA and Bonferroni test) showed significant between-group differences for improvements in QCSA in the most symptomatic leg favoring RT versus NW (2.3 cm2, 95% CI [0.6, 3.9]) and HBE (2.3 cm2 [0.8, 3.9]); and 30sCS (1.8 repetitions [0.2-3.3]), and 6MWT (35.1 m [3.5-66.7]) favoring NW versus HBE. Associations existed between exercise-induced changes in QCSA and QMVC (r = 0.366, p = .019) for the most symptomatic leg and between changes in 6MWT and QMVC (r = 0.320, p = .04) and LEP (r = 0.381, p = .01), respectively, for the least symptomatic leg.Conclusions: Resistance training appeared effective for improving muscle mass, but less effective for improving muscle strength, power, and functional performance. Only exercise-induced changes in muscle strength and power of the least symptomatic leg, not the most symptomatic leg, were related to changes in functional performance.
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Affiliation(s)
- Theresa Bieler
- Department of Physical and Occupational Therapy, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark
| | | | - Mette Nyberg
- Department of Physiotherapy and Occupational Therapy, Naestved, Slagelse and Ringsted Hospitals, Slagelse, Denmark
| | - S Peter Magnusson
- Department of Physical and Occupational Therapy, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark.,Institute of Sports Medicine, Department of Orthopedic Surgery, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - Michael Kjaer
- Institute of Sports Medicine, Department of Orthopedic Surgery, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - Nina Beyer
- Department of Physical and Occupational Therapy, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark.,Institute for Clinical Medicine, University of Copenhagen, Copenhagen N, Denmark
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