Abstract：
OBJECTIVE: To investigate how audio-biofeedback during the instruction of partial weight-bearing affected adherence, compared to traditional methods, in older adults; and to investigate the influence of individual characteristics.
METHODS: The primary outcome measure of this randomised controlled trial was the amount of load, measured as the ground reaction force, on the partial weight-bearing leg. The secondary outcome was the influence of individual characteristics on the amount of load. Included were healthy volunteers 60 years of age or older without gait impairment. Participants were randomly allocated to one of two groups; blinding was not possible. Partial weight-bearing of 20 kg was trained using crutches with audio-biofeedback (intervention group) or a bathroom scale (control group). The degree of weight-bearing was measured during six activities with sensor insoles. A mean load between 15 and 25 kg was defined as adherent.
RESULTS: There was no statistically significant difference in weight-bearing between the groups for all activities measured. For the sit-stand-sit activity, weight-bearing was within the adherence range of 15-25 kg (audio-biofeedback: 21.7 ± 16.6 kg; scale: 22.6 ± 13 kg). For standing, loading was below the lower threshold (10 ± 7 vs. 10 ± 10 kg). Weight-bearing was above the upper threshold for both groups for: walking (26 ± 11 vs. 34 ± 16), step-up (29 ± 18 vs. 34 ± 20 kg) and step-down (28 ± 15 vs. 35 ± 19 kg). Lower level of cognitive function, older age, and higher body mass index were correlated with overloading.
CONCLUSIONS: Audio-biofeedback delivered no statistically significant benefit over the scale method. Lower cognitive function, older age and higher body mass index were associated with overloading.
BACKGROUND: Not applicable due not being a clinical trial and due to the cross-sectional design (one measurement point, no health intervention, no change in health of a person).
METHODS: The primary outcome measure of this randomised controlled trial was the amount of load, measured as the ground reaction force, on the partial weight-bearing leg. The secondary outcome was the influence of individual characteristics on the amount of load. Included were healthy volunteers 60 years of age or older without gait impairment. Participants were randomly allocated to one of two groups; blinding was not possible. Partial weight-bearing of 20 kg was trained using crutches with audio-biofeedback (intervention group) or a bathroom scale (control group). The degree of weight-bearing was measured during six activities with sensor insoles. A mean load between 15 and 25 kg was defined as adherent.
RESULTS: There was no statistically significant difference in weight-bearing between the groups for all activities measured. For the sit-stand-sit activity, weight-bearing was within the adherence range of 15-25 kg (audio-biofeedback: 21.7 ± 16.6 kg; scale: 22.6 ± 13 kg). For standing, loading was below the lower threshold (10 ± 7 vs. 10 ± 10 kg). Weight-bearing was above the upper threshold for both groups for: walking (26 ± 11 vs. 34 ± 16), step-up (29 ± 18 vs. 34 ± 20 kg) and step-down (28 ± 15 vs. 35 ± 19 kg). Lower level of cognitive function, older age, and higher body mass index were correlated with overloading.
CONCLUSIONS: Audio-biofeedback delivered no statistically significant benefit over the scale method. Lower cognitive function, older age and higher body mass index were associated with overloading.
BACKGROUND: Not applicable due not being a clinical trial and due to the cross-sectional design (one measurement point, no health intervention, no change in health of a person).
摘要：
目的：研究部分负重教学过程中的音频-生物反馈如何影响依从性，与传统方法相比，在老年人中；并调查个体特征的影响。
方法：这项随机对照试验的主要结局指标是负荷量，以地面反作用力测量，在部分承重腿上。次要结果是个体特征对负载量的影响。包括年龄在60岁或以上的健康志愿者，没有步态障碍。参与者被随机分配到两组中的一组;致盲是不可能的。使用带有音频-生物反馈的拐杖（干预组）或浴室秤（对照组）训练20公斤的部分负重。在使用传感器鞋垫的六次活动中测量了负重程度。在15和25kg之间的平均负荷被定义为粘附。
结果：对于所有测量的活动，两组之间的负重没有统计学上的显着差异。对于坐-站-坐活动，负重在15-25kg的依从性范围内（音频-生物反馈：21.7±16.6kg；规模：22.6±13kg）。为了站立，负荷低于下限阈值(10±7vs.10±10kg)。两组的负重均高于上阈值：步行（26±11vs.34±16),提升(29±18vs.34±20kg)和降压(28±15vs.35±19kg)。认知功能水平较低，年龄较大,较高的体重指数与超负荷有关。
结论：音频生物反馈与量表方法相比没有统计学上的显着益处。认知功能较低，年龄大和体重指数高与超负荷有关.
背景：由于不是临床试验并且由于横截面设计（一个测量点，没有健康干预，一个人的健康状况没有变化)。
方法：这项随机对照试验的主要结局指标是负荷量，以地面反作用力测量，在部分承重腿上。次要结果是个体特征对负载量的影响。包括年龄在60岁或以上的健康志愿者，没有步态障碍。参与者被随机分配到两组中的一组;致盲是不可能的。使用带有音频-生物反馈的拐杖（干预组）或浴室秤（对照组）训练20公斤的部分负重。在使用传感器鞋垫的六次活动中测量了负重程度。在15和25kg之间的平均负荷被定义为粘附。
结果：对于所有测量的活动，两组之间的负重没有统计学上的显着差异。对于坐-站-坐活动，负重在15-25kg的依从性范围内（音频-生物反馈：21.7±16.6kg；规模：22.6±13kg）。为了站立，负荷低于下限阈值(10±7vs.10±10kg)。两组的负重均高于上阈值：步行（26±11vs.34±16),提升(29±18vs.34±20kg)和降压(28±15vs.35±19kg)。认知功能水平较低，年龄较大,较高的体重指数与超负荷有关。
结论：音频生物反馈与量表方法相比没有统计学上的显着益处。认知功能较低，年龄大和体重指数高与超负荷有关.
背景：由于不是临床试验并且由于横截面设计（一个测量点，没有健康干预，一个人的健康状况没有变化)。
