Trunk rotation enhances movement of the knee abduction angle while running among female collegiate middle- and long-distance runners

This cohort study aimed to i) clarify the relationship between abduction of the knee joint and trunk motion during running in the stance phase, and ii) clarify the relationship between abduction of the knee joint during running in the stance phase and the amount of trunk rotation measured in a static position. Twenty-nine female collegiate middle- and long-distance runners participated. The knee abduction angle and absolute angles to the floor were calculated using a three-dimensional motion analysis device. Static trunk rotation was calculated. Trunk rotation angle to the supporting side (r = 0.525), thigh posterior tilt angle (r = -0.510), thigh adduction angle (r = 0.417), lower leg anterior tilt angle (r = -0.483), and static trunk rotation to the supporting side (r = -0.429) were significantly correlated with knee abduction angle. Trunk rotation angle to the supporting side (ß = 0. 465), thigh adduction angle (ß = 0.374), lower leg anterior tilt angle (ß = 0.228), and static trunk rotation to the supporting side (ß = -0.256) (R2 = .556) were significantly correlated with the knee abduction angle. The increase or decrease in the knee abduction angle should consider the mutual influence of the lower limb and trunk motion

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聖隷クリストファー大

Factors associated with social participation among community-dwelling frail older adults in Japan: a cross-sectional study

Abstract Background In recent years, it has become clear that participation in social activities by the older adult suppresses their need for long-term care. Likewise, social participation can promote long-term care prevention among frail older adults who are at a higher risk of needing long-term care. However, their social participation rate is low, and the factors causing these low rates of participation are unclear. Therefore, this study identifies the factors affecting social participation of frail older adults. Methods After excluding those certified as requiring long-term care, 28,636 older adults within the target region were selected to receive questionnaires. The questionnaires were distributed and collected via mail. A total of 22,048 respondents (77.0%), including 9,325 men and 10,150 women, were included; 2,655 frail older adults were identified for analysis. Questionnaire items inquired about social participation, basic attributes, need for long-term care, mobility, subjective health, direct and indirect contact with relatives living separately and direct and indirect contact with friends and neighbors. For the statistical analysis, this study employed a binomial logistic regression analysis with social participation as the objective variable. Results The rate of social participation among frail older adults was 13.7%. Items related to social participation included sex, economic status, mobility, subjective health, direct contact with friends, and indirect contact with friends. Conclusions Interactions with friends and neighbors and physical functionality are correlated with levels of social participation among frail older adults, suggesting that social participation can be promoted by maintaining friendships, forming new ones, and maintaining and improving physical functionality