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Seasonal Variations in Step Activity Among Individuals with Transfemoral Amputation

This study investigates the seasonal patterns of physical activity in individuals with transfemoral amputation. The findings indicate a notable decrease in activity levels during winter and autumn, with median activity 4.1% and 2.5% below the annual average, respectively. Conversely, subjects exhibited increased activity during spring and summer, with median levels rising 1.7% and 2.5% above the annual average. Additionally, not all subjects followed these seasonal patterns, highlighting significant variability. Outliers were identified as those demonstrating significant deviations from the interquartile range.

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Seasonal Variations in Step Activity Among Individuals with Transfemoral Amputation

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  1. Figure 3. Change in mean step activity by season. Subjects commonly experienced decreased activity in winter and autumn (i.e., median activity 4.1% and 2.5% below annual average, respectively) and increased activity in spring and summer (i.e., median activity 1.7% and 2.5% above annual average, respectively). However, not all subjects demonstrated same seasonal patterns. Subject numbers for outliers denoted by circles (those subjects who were more than 1.5 times the interquartile range [IQR] above the 75th quartile or more than 1.5 times the IQR below the 25th quartile). Halsne EG, Waddingham MG, Hafner BJ. Long-term activity in and among persons with transfemoral amputation. J Rehabil Res Dev. 2013;50(4):515–30.http://dx.doi.org/10.1682/JRRD.2012.04.0066

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