Abstract
The aim of this study was to assess the measurement properties of a Polish adaptation of the Yale Physical Activity Survey (YPAS-PL). The Polish cultural adaptation of the YPAS was administered to a group of 104 people aged 65 to 89 years (mean age 72 ± 5). To assess the reliability of the YPAS-PL, a test-retest procedure was applied. Validity was assessed by comparing the results of the YPAS-PL with accelerometery (ActiGraph wGT3X+). The indicators based on the YPAS-PL activities checklist were characterized by high repeatability and had better reliability values than the YPAS-PL activity dimension indices (energy expenditure interclass correlation coefficient (ICC) = 0.81, total time physical activity ICC = 0.86). We noted a significant positive relationship between energy expenditure measured by an accelerometer and the YPAS-PL (r = 0.23). We can conclude that the YPAS-PL is an adequate tool for assessing energy expenditure related to physical activity in a Polish population of older adults. We also recommend the cautious and well thought-out use of the YPAS-PL activity dimension indices (summary, vigorous, leisurely walking, moving, standing, and sitting indexes).
Highlights
Based on a large body of scientific research, the positive influence of physical activity on health is currently undisputed [1,2]
Acceptable Interclass correlation coefficients (ICCs) values have been achieved for energy expenditure (ICC = 0.86), total time (ICC = 0.81), and leisurely walking index (ICC = 0.78)
The main finding of this study was that the indicators based on the Yale Physical Activity Survey (YPAS)-PL activities checklist had better reliability values than the YPAS-PL
Summary
Based on a large body of scientific research, the positive influence of physical activity on health is currently undisputed [1,2]. Research results suggest that the physical activity of older people decreases with age [3]. The relationship between physical activity and improving the health-related quality of life of older people [4], even those struggling with illnesses, is very important. Analyzing the methodology of numerous population studies on older people [5,7,8], we noted researchers often used tools that were created for the younger population. These tools often did not consider the types of activities prevalent in older age groups [9,10]
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