the aim of this study was to evaluate the effect of different intensities of short-term exercise on leptin, insulin, cortisol and lipid profiles in overweight and obese children. 24 overweight and obese boys (mean age 15.5±0.65 years old and bmi: 30.09+2.47 kg/m2) participated in this study. all subjects participated in a graded breath to breath gas-analyzer testing by bruce protocol to measure...

Physical activity enhances insulin action in obese/overweight individuals. However, the exercise prescription required for the optimal enhancement is not known. The purpose of this study was to test the hypothesis that exercise training consisting of vigorous-intensity activity would enhance insulin sensitivity more substantially than moderate-intensity activity. Sedentary, overweight/obese sub...

Acute aerobic exercise may increase cognitive processing speed among tasks demanding a substantial degree of executive function. Few studies have investigated executive function after acute exercise in older adults across various exercise intensities. Healthy females 60-75 years of age (n = 11) who were not on medications completed 20-min exercise sessions at a moderate (50%VO2max) exercise int...

OBJECTIVE To examine the outcome expectations of RA patients, rheumatologists, and physiotherapists regarding high intensity exercise programmes compared with conventional exercise programmes. METHODS An exercise outcome expectations questionnaire was administered to 807 RA patients, 153 rheumatologists, and 624 physiotherapists. The questionnaire consisted of four statements regarding positi...

OBJECTIVE Physical exercise is capable of enhancing or suppressing the immune response depending on the intensity and duration of exercise. This study investigated how exercise intensity influences the lymphocyte antioxidant response and the induction of cellular oxidative damage. DESIGN Eighteen voluntary male pre-professional soccer players participated in this study. Sportsmen played a 60 ...

This viewpoint debates the state-of-the-art research focusing on the optimal intensity of the exercise programs for inducing a sustained weight or fat-mass loss in overweight/obese people. In our demanding society, the most attractive messages in the popular press are those promising the best results in a short time. This might explain the emphasis given by media to those scientific articles th...

Purpose: High-intensity exercise is safe and effective for low-risk pregnant women and their developing babies; however, little is known about the psychological effect of an acute bout of high-intensity exercise among pregnant women. The goal of this study is to examine maternal mood in response to an acute bout of high-intensity exercise. Methods: Twenty-six pregnant women (18-24 wks gestation...

Cardiac parasympathetic activity may be non-invasively investigated using heart rate variability (HRV), although HRV is not widely accepted to reflect sympathetic activity. Instead, cardiac sympathetic activity may be investigated using systolic time intervals (STI), such as the pre-ejection period. Although these autonomic indices are typically measured during rest, the "reactivity hypothesis"...

The main objective of the present study was to evaluate the short-term effects of exercise of different intensities on energy intake. Eleven young men were submitted to three randomly assigned sessions (one control and two exercise sessions) in which they ate, ad libitum, foods from a buffet-type meal. The energy cost of exercise was the same in the two exercise sessions. Results showed that th...