Pötzelsberger B, Lindinger S J, Stöggl T, Buchecker M, Müller E
Department of Sport Science and Kinesiology, University of Salzburg, Salzburg, Austria.
Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden.
Scand J Med Sci Sports. 2015 Aug;25 Suppl 2:49-59. doi: 10.1111/sms.12484.
The aim of the study was to examine the effect of a 12-week recreational skiing intervention on functional gait performance in people with unilateral total knee arthroplasty (TKA). Twenty-three older adults (71 ± 5 years) were assigned to the intervention (IG) or control group (CG). Test time and ground reaction forces (GRF) were recorded at pre- and post-intervention and in the retention phase during functional gait tests. Ground contact was recorded bilaterally and divided into the weight acceptance and push-off phases. In IG, a faster stair descent time (16%) was observed at post-test with no further change at the retention test. The asymmetry indices for all analyzed variables were decreased in stair descent and during weight acceptance in stair ascent and level walking without further changes between post- and retention test. The reduced asymmetries occurred mainly because of increased loading of the operated leg. Most variables were unchanged in CG. Similar to the force data, the asymmetry index for temporal stride characteristics was reduced in all stair descent variables. These results demonstrate that alpine skiing as a leisure-time activity has a beneficial effect on gait performance and leads to a more balanced load distribution between the legs during daily activities.
本研究的目的是探讨为期12周的休闲滑雪干预对单侧全膝关节置换术（TKA）患者功能性步态表现的影响。23名老年人（71±5岁）被分配到干预组（IG）或对照组（CG）。在干预前后以及功能步态测试的维持阶段记录测试时间和地面反作用力（GRF）。双侧记录地面接触情况，并分为承重阶段和蹬离阶段。在IG组，测试后观察到下楼梯时间更快（16%），维持测试时无进一步变化。在楼梯下降以及上楼梯和水平行走的承重过程中，所有分析变量的不对称指数均降低，测试后和维持测试之间无进一步变化。不对称性降低主要是由于患侧腿负荷增加。CG组大多数变量无变化。与力数据相似，所有楼梯下降变量的时间步幅特征不对称指数均降低。这些结果表明，高山滑雪作为一项休闲活动对步态表现有有益影响，并导致日常活动中双腿之间的负荷分布更加平衡。
