Effects of Eight Weeks of High Intensity Functional Training on Glucose Control and Body Composition among Overweight and Obese Adults

Abstract

High-intensity exercise has been found to positively influence glucose control, however, the effects of high-intensity functional training (HIFT) for overweight and obese sedentary adults without diabetes is unknown. The purpose of this study was to examine changes in body composition and glucose control from eight weeks of aerobic and resistance training (A-RT) compared to HIFT. Session time spent doing daily workouts was recorded for each group. Baseline and posttest measures included height, weight, waist circumference, dual X-ray absorptiometry (body fat percentage, fat mass, lean mass), and fasting blood glucose. Participants completing the intervention (78%, n = 9 per group) were 67% female, age = 26.8 ± 5.5 years, and had body mass index = 30.5 ± 2.9 kg/m2. Fasting blood glucose and 2-h oral glucose tolerance tests were used as primary outcome variables. On average, the HIFT group spent significantly less time completing workouts per day and week (ps < 0.001). No significant differences were found for body composition or glucose variables within- or between-groups. Even though our findings did not provide significant differences between groups, future research may utilize the effect sizes from our study to conduct fully-powered trials comparing HIFT with other more traditional training modalities.

Fit for Fire: A 10-Week Low-Cost HIFT Experiential Learning Initiative between Underrepresented Kinesiology Undergraduates and Hypertensive Deconditioned Firefighters Improves Their Health and Fitness

“…This may be due to the frequency of participation, which is explained in changes between pre-and post-measurement. Some studies also found no significant changes in body composition variables after HIFT training [55]. These differences may be due to differences in body composition assessment methods, such as the use of the low-cost caliper method in the current study.…”

Prevalence of Prediabetes and Type 2 Diabetes Mellitus in Football Players: A Novel Multi Football Clubs Cross Sectional Study

“…Football game is packed with a lot of recreational activities, and exercise has been known to positively influence the glucose control [ 20 ]. Nieuwoudt et al [ 21 ] determined the changes in beta-cell function after six weeks of high-intensity functional training (HIFT) among 12 sedentary adults with T2DM.…”

Prevalence of Prediabetes and Type-2 Diabetes Mellitus in Cricket Players: Multi-Cricket Clubs Cross Sectional Study

“…The cricket is a high-intensity sport with a positive impact on glucose metabolism. 17 Nieuwoudt et al 18 reported that after six weeks high-intensity functional training (HIFT) among adults with T2DM, participants showed significant improvements in beta-cell function while decreasing the body fat and preserving lean mass. In another study, Fealy et al 19 reported an increased insulin sensitivity after 6-week HIFT training.…”