Winberg Cecilia, Flansbjer Ulla-Britt, Rimmer James H, Lexell Jan
Department of Health Sciences, Lund University, Lund, Sweden(∗).
Department of Health Sciences, Lund University, Lund, Sweden(†).
PM R. 2015 Mar;7(3):236-44. doi: 10.1016/j.pmrj.2014.09.005. Epub 2014 Sep 10.
To examine the relationship between physical activity (assessed subjectively and objectively), knee muscle strength, gait performance, age, gender, and body mass index (BMI) in persons with late effects of polio.
Cross-sectional.
A university hospital outpatient clinic.
Seventy-seven community-dwelling ambulant persons with late effects of polio (42 men and 35 women; mean age 67 years [standard deviation 6, range 54-80]).
Physical activity was described by the Physical Activity and Disability Survey and by a pedometer (number of steps/day). Isokinetic concentric knee extensor and flexor muscle strength was measured at 60°/s. Gait performance was assessed by the Timed "Up and Go" test, the Comfortable Gait Speed and Fast Gait Speed tests, and the 6-Minute Walk test.
The Physical Activity and Disability Survey leisure subscale was significantly correlated with all knee muscle strength measurements (P < .01), the Comfortable Gait Speed test (P < .05), and the 6-Minute Walk test (P < .05), and the number of steps per day was significantly correlated with all knee muscle strength measurements and all gait performance tests (P < .01). In the linear regression analyses, knee muscle strength and gait performance explained 1% to 8% of the variance in the leisure subscale, and when the personal attributes (age, gender, and BMI) were added, they explained up to 14% of the variance. Knee muscle strength explained 16% and gait performance explained 15% to 31% of the variance in the number of steps per day, and when personal attributes (age, gender, and BMI) were added, they contributed at most an additional 3% of the variance.
In ambulatory persons with late effects of polio, knee muscle strength and gait performance explain only a small portion of physical activity. Further studies are needed to increase our understanding of how other impairments, activity limitations, environmental factors, and personal factors are associated with physical activity in persons with late effects of polio.
研究脊髓灰质炎后遗症患者的身体活动（主观和客观评估）、膝关节肌肉力量、步态表现、年龄、性别和体重指数（BMI）之间的关系。
横断面研究。
大学医院门诊。
77名社区居住的能行走的脊髓灰质炎后遗症患者（42名男性和35名女性；平均年龄67岁[标准差6，范围54 - 80岁]）。
通过身体活动与残疾调查及计步器（每日步数）描述身体活动。以60°/秒的速度测量等速向心膝关节伸肌和屈肌力量。通过定时“起立行走”测试、舒适步态速度和快速步态速度测试以及6分钟步行测试评估步态表现。
身体活动与残疾调查休闲分量表与所有膝关节肌肉力量测量值（P < 0.01）、舒适步态速度测试（P < 0.05）和6分钟步行测试（P < 0.05）显著相关，每日步数与所有膝关节肌肉力量测量值和所有步态表现测试显著相关（P < 0.01）。在线性回归分析中，膝关节肌肉力量和步态表现在休闲分量表中解释了1%至8%的方差，当加入个人属性（年龄、性别和BMI）时，它们解释了高达14%的方差。膝关节肌肉力量解释了每日步数方差的16%，步态表现解释了15%至31%的方差，当加入个人属性（年龄、性别和BMI）时，它们最多再贡献3%的方差。
在能行走的脊髓灰质炎后遗症患者中，膝关节肌肉力量和步态表现仅解释了身体活动的一小部分。需要进一步研究以加深我们对其他损伤、活动受限、环境因素和个人因素如何与脊髓灰质炎后遗症患者的身体活动相关的理解。
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