The Comparison of Substrate Oxidation in High Intensity Interval Activity with Different Rest Periods (Active, Inactive, Active/Inactive) in Young Men Overweight and Obese
Poster Presentation XML
Authors
University of Birjand
Abstract
Introduction: The complication of obesity in today's societies is a major problem and a threat to the health of individuals. The obesity increases the risk of some diseases such as metabolic syndrome, high blood pressure, cardiovascular disease, and so on. The relationship between physical activity and health has a long history. This important requirement is an effective strategy for fat losing. This study was conducted to compare the rate of oxidation of substrate in high intensity interval activity with different rest periods (active, inactive, active / inactive) in young men overweight and obese.
Methodology: Sixteen male students (age: 20.75 ± 1.77 years and body mass index: 28 ± 6.2 kg/m2) were selected. Three sessions with a one-week interval, exercise protocols with different alternate intervals (active, inactive, active/inactive) were performed. In each session, the sports activities performed by each subject were consisted of 8-10 set of 1-minute turns with 1 minute rest (active, inactive, active/inactive). Indicators of fat oxidation, carbohydrate oxidation and energy expenditure were measured at three time intervals (before, during and after exercise) by respiratory gas analyzer (cortex/Germany). The intensity scale of the perceived effort was determined during activity in each session. Data was analyzed with repeated measurements variance and Bonferroni post hoc test (p<0.005).
Results: The amount of fat oxidation increased significantly during activity compared to other stages of measurement (P=0.0001), but there was no significant difference between the interval groups (p>0.05). On the other hand, the ratio of fat oxidation (during and after exercise) was higher at the expense of energy of high intensity interval activity with combined recovery as compared to the active and inactive groups (respectively, 0.32±0.75, 0.26±0.65, 0.32±0.06). Meanwhile, the severity scale of the perceived effort of the combined and inactive retrieval group was significantly lower than active retrieval. The intensity scale of the perceived effort of the combined recovery group was lower compared to the active recovery (respectively, 7.25±1.43, 4.88±1.14) and the amount of fat oxidation (during and after exercise) was higher.
Discussion: Since the intensity scale of the perceived effort of the combined recovery group was lower compared to the active recovery (respectively, 7.25±1.43, 4.88±1.14), and the amount of fat oxidation (during and after exercise) also was higher, it seems that high intensity interval exercise with combination of (active/passive) rest period can be considered as an economical and cost-effective way to lose weight in the overweight and obese people.
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