Sarcopenia is a progressive systemic skeletal muscle disorder characterized by a
pathological decline in muscle strength, quantity, and quality, which frequently affects the …

The health benefits of physical activity (PA) have been widely recognized, yet traditional
measures of PA, including questionnaires and category-based assessments of volume and …

Observational data have shown that some cancer survivors develop chronic conditions like
frailty, sarcopenia, cardiac dysfunction, and mild cognitive impairment earlier and/or at a …

Background With aging, daily physical activity (PA) becomes less frequent and more
fragmented. Accumulation patterns of daily PA—including transitions from active-to …

Importance Fragmented daily physical activity may be a sign of physiological decline that
provides more powerful insight into impending mortality than total daily activity. Objective To …

Background Self-reported low physical activity is a defining feature of phenotypic frailty but
does not adequately capture physical activity performed throughout the day. This study …

Background Fatigue related to task standardized by duration and intensity, termed
fatigability, could manifest as shortening of activity bouts throughout the day causing daily …

Participating in sufficient levels of physical activity is important for sustaining health and
quality of life across the age span. The United States Physical Activity Guidelines …

Background Larger brain volumes are often associated with more free-living physical activity
(PA) in cognitively normal older adults. Yet, whether greater brain volumes are associated …

Purpose To define and quantify patterns of objectively measured daily physical activity by
level of visual field (VF) damage in glaucoma patients including:(1) activity fragmentation, a …