12 weeks of aerobic training effect on fasting weight loss

DOI: 10.15343/0104-7809.20153904401409

Abstract

This study aimed to verify 12 weeks of aerobic training effect on fasting weight loss performed between October 2014 and
March 2015 at Pitágoras a city in Betim/MG. The sample was 33 sedentary women without metabolic diseases. Initially the
volunteers were submitted to aerobic capacity test (Balke-Ware) and body composition evaluation. It was recorded the total
body mass (TBM), muscle mass (MM), fat mass (FM) and percentage of body fat (PBF) by tetrapolar bioimpedance. Then the
volunteers were randomly divided into three groups, who performed aerobic training in a treadmill. One group performed
the training in fasting (FT) in the post-absorptive period, with low intensity (50% of the heart rate reserve), while another
group performed the same training, but in fed state (PT). The third group ran the same distance from the other groups, but
with higher intensity (HIT) (70% of the heart rate reserve) in fed state. To compare body composition and aerobic capacity
before and after training it was used the paired t test, while to compare the percentage change of MCT and the PGC between
groups it was used the ANOVA one-way test. The results showed that the aerobic capacity increased in all groups, but
the increase was greater in the HIT. Further, the HIT presented a significant reduction in FM and PBF, while the FT and PT
groups showed no significant changes in body composition. No significant differences were found between the groups in
relation to variation of PGC and PBF. It was concluded that fasted aerobic training has no additional effect on weight loss.