BACKGROUND Aerobic exercise enhances endothelium-dependent vasodilation in hypertensive patients, patients with chronic heart failure, and healthy individuals. However, it is unclear how the intensity of exercise affects endothelial function in humans. The purpose of the present study was to determine the effects of different intensities of exercise on endothelium-dependent vasodilation in huma...

BACKGROUND The contribution of family circumstance to physical activity and television viewing has not been widely investigated in pre-adolescents, and available information is inconsistent. This study examines whether television viewing and objectively measured physical activity vary by different indicators of family circumstance. METHODS Data from the 2001 Children's Leisure Activity Study ...

High-intensity interval training and moderate-intensity continuous elicited faster pulmonary oxygen uptake (V̇o 2 ) kinetics during cycling within 3 wk of with no further changes thereafter in individuals type diabetes. These adaptations were accompanied by unaltered near-infrared spectroscopy-derived muscle deoxygenation (i.e. deoxygenated hemoglobin myoglobin concentration, [HHb+Mb]) transient...

BACKGROUND Exercise intensity may affect the selective loss of abdominal adipose tissue. OBJECTIVE This study showed whether aerobic exercise intensity affects the loss of abdominal fat and improvement in cardiovascular disease risk factors under conditions of equal energy deficit in women with abdominal obesity. DESIGN This was a randomized trial in 112 overweight and obese [body mass inde...

Exercise has beneficial effects on lipoproteins. Little is known about how long the effects persist with detraining or whether the duration of benefit is effected by training intensity or amount. Sedentary, overweight subjects (n = 240) were randomized to 6-mo control or one of three exercise groups: 1) high-amount/vigorous-intensity exercise; 2) low-amount/vigorous-intensity exercise; or 3) lo...

Background and objectives: Elderly is characterized by decreased cardiac function, which is widely associated with mitochondrial failure in cell death. Elderly causes heart apoptosis. Although the old heart is vulnerable to apoptosis, physical training and some supplements through different mechanisms could be effective in reducing apoptosis. The present study aimed to investigate the effect of...

BACKGROUND Steps/day is widely utilized to estimate the total volume of ambulatory activity, but it does not directly reflect intensity, a central tenet of public health guidelines. Cadence (steps/min) represents an overlooked opportunity to describe the intensity of ambulatory activity. We sought to establish thresholds linking directly observed cadence with objectively measured intensity in 6...