title: Alpine Skiing With total knee ArthroPlasty (ASWAP): study design and intervention.
abstract: The aim of this study was to monitor the long-term effects of skiing on health-related parameters and implant related factors like loosening and wear in patients with total knee arthroplasty. This paper describes the overall study design, general demographics, and physiological demand of the intervention phase. A control group design consisting of an intervention group (n = 14; age: 70.4 ± 4.5 years) and a control group (n = 17; age: 71.5 ± 5.1 years) was utilized in this study. Parameters of interest were measured during pre-, post-, and retention test sessions. During the 12 weeks of intervention, an average of 25.5 days of guided skiing was conducted by each patient. Daily heart rate (HR) profiles and global positioning system data throughout the ski day were recorded. The intervention group completed an average of 3393 vertical meters of downhill skiing, with a total skiing distance of 33.6 km/day. Average skiing speed was 8.2 m/s. In the skiing phase, the average physiological load was 75.9 ± 6.6% of HRmax . Further effects of the 12-week skiing intervention on the tested parameters will be reported in the following papers of this supplementum.
authors.affiliation: Department of Sport Science and Kinesiology, University of Salzburg, Salzburg, Austria.
authors.forename: A
authors.initials: A
authors.lastname: Kösters
authors.affiliation: Department of Sport Science and Kinesiology, University of Salzburg, Salzburg, Austria.
authors.forename: B
authors.initials: B
authors.lastname: Pötzelsberger
authors.affiliation: Xlab, Department of Biomedical Sciences, Center for Healthy Aging, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.
authors.forename: F
authors.initials: F
authors.lastname: Dela
authors.affiliation: Orthopaedic University Clinic, PMU Salzburg, Salzburg, Austria.
authors.forename: U
authors.initials: U
authors.lastname: Dorn
authors.affiliation: Orthopaedic University Clinic, PMU Salzburg, Salzburg, Austria.
authors.forename: T
authors.initials: T
authors.lastname: Hofstaedter
authors.affiliation: Sportsclinic Austria, Innsbruck, Austria.
authors.forename: C
authors.initials: C
authors.lastname: Fink
authors.affiliation: Department of Sport Science and Kinesiology, University of Salzburg, Salzburg, Austria.
authors.forename: E
authors.initials: E
authors.lastname: Müller
mesh_terms: D000222:Adaptation, Physiological; D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D016022:Case-Control Studies; D005260:Female; D006339:Heart Rate; D006801:Humans; D007719:Knee Joint; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D012865:Skiing
keywords: Skiing intervention; elderly; knee TEP; study design