Abstract
The purpose of this project was to examine the effects of a 20-week training study, which included varied aerobic exercise intensity and identical resistance and flexibility training, on circumference, body mass, hormonal, health/fitness and psychophysical measures. Methods: Thirty-two of 40 recruited overweight middle-aged women were randomized into two training groups: low-intensity (LOW: -40% VO2peak and high-intensity (HIGH: -80% VO2peak), for a 20-week training program. Participants were weighed, measured, underwent VO2peak graded exercise tests, and had blood drawn pre-training and at 10- and 20-weeks. Results: Both groups experienced significant body mass loss at 10- and 20-weeks (LOW: p and circumference loss (10-weeks—LOW: waist, hip, and thigh regions (p leptin may have contributed to the energy intake during laboratory trials.
Highlights
The prevention of obesity and unhealthy weight gain will help to ward off many associated conditions such as cardiovascular disease, diabetes, arthritis, and other health disorders [1]-[3]
One objective of this study was to use a well-rounded training program and vary the aerobic intensity to determine whether the intensity difference had an effect on body mass and circumference measurements, hormones related to hunger/satiation signals, as well as other health/fitness related variables, over the course of a 20-week training program
Of interest was that both groups had a similar decline in overall body mass (Table 1), indicating that it was total caloric expenditure, rather than the intensity of the exercise, that was contributing to overall body mass loss, which agrees with previous studies that have investigated intensity effects [11] [22]
Summary
The prevention of obesity and unhealthy weight gain will help to ward off many associated conditions such as cardiovascular disease, diabetes, arthritis, and other health disorders [1]-[3]. In a study conducted by Woo et al (1982) [8], obese women underwent three conditions: sedentary, low- and moderate-intensity exercise; the women consumed the same EI in all three trials, but during exercise days, deficit occurred due to the added energy expenditure. They found that over 57-days, obese women did not compensate for exercise energy expenditure and lost weight [9]. HIGH programs have been shown to be effective in creating an overall body mass loss [10]-[12], yet the potential influence over hunger and subsequent caloric intake is variable under different situations
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