title: Association of muscle strength, power, and optimal shortening velocity with functional abilities of women with chronic osteoarthritis participating in a multi-modal exercise program.
abstract: We assessed the relative association of quadriceps muscle strength and power as well as optimal shortening velocity (υ(opt)) to physical functioning in 28 women aged 50-87 years with chronic osteoarthritis participating in a three-week multimodal exercise program. Quadriceps muscle strength, power, υ(opt), and functional performance using the Activities of Daily Living (ADL) scale, Timed Up & Go (TUG) test, Tinetti test, and 6-Minute Walking Test (6-MWT) were assessed pre- and postrehabilitation. With rehabilitation, patients improved the values of strength, power, and the results of all functional tests. Both at baseline and postrehabilitation, functional status was more strongly related to power and υ(opt) than to strength. Functional gains obtained with rehabilitation were not related to changes in power or υ(opt), and only very modestly related to changes in strength. Future studies should assess the benefits and feasibility of power- and velocity-oriented training in patients with osteoarthritis.
authors.affiliation: Department of Physical Medicine, Medical University of Lodz, Poland.
authors.forename: Joanna S
authors.initials: JS
authors.lastname: Kostka
authors.forename: Jan W
authors.initials: JW
authors.lastname: Czernicki
authors.forename: Tomasz J
authors.initials: TJ
authors.lastname: Kostka
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology; D005080:Exercise Test / Q000379:methods; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D006801:Humans; D057187:Independent Living; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology; D010003:Osteoarthritis / Q000175:diagnosis / Q000503:physiopathology / Q000534:rehabilitation; D010809:Physical Fitness; D052097:Quadriceps Muscle / Q000503:physiopathology; D020127:Recovery of Function; D016896:Treatment Outcome