Cardiorespiratory fitness (CRF) refers to the capacity of the circulatory and respiratory
systems to supply oxygen to skeletal muscle mitochondria for energy production needed …

Background Although cardiorespiratory fitness (CRF) in childhood and adolescence may be
linked to future cardiovascular health, there is currently limited evidence for a longitudinal …

Background Physical activity/inactivity is impacted by a plethora of intertwined factors. There
are a limited number of studies on physical activity/inactivity that provide a European cross …

Background Xinjiang is an economically underdeveloped area in China, but the obesity rate
of children and adolescents is increasing year by year. Physical fitness and body mass …

Background Muscular fitness (MF) is considered a powerful marker of health, but the extent
to which common health behaviors are associated with MF during childhood and …

Objectives We investigated the relationships between fine motor skills, fitness,
anthropometrics, gender and perceived motor performance in school beginners. The aim of …

There has been much speculation about mechanisms driving the pediatric sleep/obesity
link. However, conjectures have not been matched by a systematic review of pediatric data …

Background and objectives: Childhood obesity is one of the main public health issues facing
advanced societies. The Spanish population presents 28.6% overweight or obese …

Objectives The aim of this systematic review was to summarize the evidence on the
associations between the sleep duration or sleep quality and cardiorespiratory and …

To develop age-and sex-specific physical fitness reference standards and express the age-
and sex-related differences using standardized effect sizes for Chinese children and …