Daily physical activity is associated with increased sonographically measured bone status during lactation.

Objectives: The purpose of this cross-sectional study was to investigate the association between daily physical activity and sonographically measured bone status among women during the lactation period.

Methods: Final participants were 152 women 4 months after childbirth. Bone status of the participants was measured using quantitative ultrasonometry of the calcaneus (speed of sound).

Lower physical activity is associated with daytime sleepiness in children aged 9-12 years.

This study clarified the prevalence of daytime sleepiness in fourth-, fifth-, and sixth-grade children and examined the association between physical activity (PA) and daytime sleepiness in children aged 9-12 years. This cross-sectional study included 314 children (mean age ± standard deviation: 10.5 ± 1.

Association Between Public Transportation Use and Loneliness Among Urban Elderly People Who Stop Driving.

To examine the association between public transportation use and loneliness in urban elderly who stop driving. In this cross-sectional study, we assessed 31 community-dwelling older adults who had stopped driving. Public transportation use was assessed by using frequency and divided into two groups.

Reliability and Validity of the Japanese Version of the Physical Activity Questionnaire for Older Children.

Objectives: This study aimed to examine the reliability and validity of the Japanese version of the Physical Activity Questionnaire for Older Children (PAQ-C) in Japanese children aged 9 to 12 years.

Methods: A total of 210 children aged between 9 and 12 years participated. Internal consistency and test-retest reliability were evaluated using Cronbach alpha coefficient and intraclass correlation coefficient (ICC), respectively.

Effect of Pain Severity on Executive Function Decline in Community-Dwelling Older Adults.

The purpose of this study was to explore the reciprocal relationship between pain severity and executive function in community-dwelling older adults. In this prospective cohort study, 64 Japanese community-dwelling older adults aged 60 years or older (mean age 72.8 years; women, 68.

Association Between Objectively Measured Physical Activity and the Number of Chronic Musculoskeletal Pain Sites in Community-Dwelling Older Adults.

Objective: Physical inactivity is recognized as a pandemic health problem. The association of pain with physical activity, particularly when measured objectively, in older adults is unclear. This study investigates the association of number of chronic musculoskeletal pain sites and pain severity with objectively measured physical activity in community-dwelling older adults.