A ROLE FOR HIGH-INTENSITY EXERCISE ON ENERGY-BALANCE AND WEIGHT CONTROL

The objective of this commentary is to remark on the impact, exercise intensity has on energy expenditure and its potential for body weight control. Exercise intensity can favorably impact on energy expenditure in a number of ways. First, exercise-associated energy expenditure is increased by decreasing exercise efficiency and increasing work rate. Second, resistance training that increases muscle mass, ire turn incr eases resting energy expenditure. Third, aerobic exercise > 70% VO(2)m ax, increases resting energy expenditure separate from any change in m uscle mass. High-intensity exercise training has the added benefit of improving fitness, thus making low-intensity exercise less difficult a nd more easily tolerated. Although continuous intense exercise is diff icult to maintain for extended periods of time, intense interval exerc ise can be easily endured and may be an important adjunct to lifestyle modifications for body weight control.