COMPARISON OF MAXIMAL FAT OXIDATION RATES BETWEEN EXERCISE MODALITIES IN COLLEGE-AGED WOMEN
Allyson Wahus, Caroline Jones, Molly Dyer, Jinkyung Park, Kelly Massey. Georgia College & State University, Milledgeville, GA.
The purpose of this study was to determine if differences exist between exercise modalities and the measured maximal fat oxidation rates in college-aged females. Seven healthy moderately trained females (24.8 ± 6.22 y) were assessed during a graded treadmill and a graded cycle ergometer test to exhaustion to determine maximal oxygen consumption (VO2max) (33.26 ±5.7; 24.56 ±3.0 ml.kg.min, p=0.002) and the maximal fat oxidation rate (FatMax). During two subsequent exercise testing sessions, subjects performed an exercise protocol equating to incremental increases in speed and grade every 3 minutes until a respiratory exchange ratio (RER) of 1.0 was reached. Testing was administered within a two-week period, allowing a minimum of 48 hours between assessments, with similar conditions existing between tests. Standard gas measurements were collected and analyzed during all tests. The absolute FatMax was found to be 0.43 ± 0.102 g.min and occurred at 56.5% VO2max on the treadmill and 0.26 ± 0.053 g.min (55.2% VO2max) on the cycle. Paired-samples t-tests found a significant difference in FatMax between modalities (p=0.004), however FatMax occurred at roughly the same relative exercise intensity (p >0.05). Considering that VO2max was significantly different between modalities, the difference could be related to the amount of active skeletal muscle recruited with each exercise modality.
Wahus, A; Jones, C; Dyer, M; Park, J; and Massey, K
"COMPARISON OF MAXIMAL FAT OXIDATION RATES BETWEEN EXERCISE MODALITIES IN COLLEGE-AGED WOMEN,"
International Journal of Exercise Science: Conference Proceedings: Vol. 16:
1, Article 259.
Available at: https://digitalcommons.wku.edu/ijesab/vol16/iss1/259