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RESEARCH PRODUCT

Power of lower extremities is most important determinant of agility among physically inactive or active adult people

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OBJECTIVE The purpose of this cross-sectional study was to determine the relationships between agility, running speed, jumping height and length, body mass index, self-report pain in back and in lower extremities, personal factors as self-report health and fitness, and leisure time physical activity in physically inactive or active adult people. METHODS Altogether, 233 healthy subjects, 149 women (43.0 ± 7.3 years) and 84 men (44.0 ± 7.7 years), participated into study. Outcome measures were described in the International Classification of Functioning, Disability and Health domains. RESULTS Multiple regression analysis showed that jumping length explained 24.6% and 15.3% of the variance associated with agility in women and men (adjusted R2  = .246, p < .001; adjusted R2  = .153, p = .001, respectively). CONCLUSIONS Jumping length was the main determinant of agility among physically inactive or active women and men. The findings of this study strengthen opinion that the Agility Test for Adults demands also other physical and cognitive characteristics as measured now and their part explaining agility results may be relatively great. We suggest that perception and decision making explain for a great part in agility. It seems that body mass index does not play important role in agility, but physical inactivity can explain or increase the decline of agility. Also, various biological mechanisms in aging process can be linked to the deterioration of capacity of agility.