Older adults' Internet use behavior and its association with accelerometer-derived physical activity.

Objective: The aging population is thriving worldwide, and it is critical to improve the health of older adults through physical activity (PA). Although the Internet can promote PA in older adults, limited studies have used objective tools to measure it. Thus, we aimed to investigate the association between the frequency of Internet use and PA levels in older adults.

[Mechanisms of electroacupuncture underlying treatment of osteoporosis based on HDAC2-mediated osteoblast differentiation pathway].

Objective: To observe the effect of electroacupuncture (EA) on expression of histone deacetylase 2 (HDAC2), histone H3, bone formation related genes and proteins in osteoporosis rats, so as to reveal its mechanisms underlying improvement of osteoporosis.

Methods: Female SD rats were randomly divided into 4 groups: sham operation, model, EA and medication (＝ 10 rats in each group). The osteoporosis model was established by castration.