BACKGROUND Cardiac mortality and electrophysiological dysfunction both increase with age. Heart rate variability (HRV) provides indices of autonomic function and electrophysiology that are associated with cardiac risk. How habitual physical activity among older adults prospectively relates to HRV, including nonlinear indices of erratic sinus patterns, is not established. We hypothesized that in...

RATIONALE This study was designed to examine the relationships among weight, asthma severity, physical activity, and aerobic fitness in children with asthma. SUBJECTS AND METHODS Sixty-four asthmatic children 8 to 12 years old (53% female) were assessed while attending a summer asthma camp. Measures included height and weight, spirometry, histamine bronchial provocation challenge, maximal aer...

Lung function of healthy boys and girls in Jamaica in relation to ethnic composition, test exercise performance, and habitual physical activity. The relationships of forced expiratory volume and forced vital capacity on height, age, sex, area of residence, and ethnic composition were assessed in 622 children in Jamaica. Rural children in hill-farming communities were judged to have a higher hab...

Abstract Background and Aims Patients with end-stage kidney disease (ESKD) show skeletal muscle abnormalities such as sarcopenia (presence of low mass, strength, physical performance). Severe its components are associated poor clinical outcomes, decreased quality life (QoL), mortality. The direction the relationships between cardiovascular less clear impact exercise interventions in patients se...

Relationships between the level of physical activity (PA) and skills as well as relationships between the sports activity of parents and children were analysed in a sample of 1738 children from the 1st–3rd grades of elementary schools. Data on motor activity of children, sports activity of parents, and level of skilfulness of children rated according to their motor performance were obtained by ...