High-Intensity Interval Training and Intermittent Fasting on Body Composition and Physical Performance in Active Women

Effect of High-Intensity Interval Training and Intermittent Fasting on Body Composition and Physical Performance in Active Women

The objective of this study is to compare the body composition and physical performance effects of HIIT, with or without intermittent fasting intervention in active women. Fourteen active normal weight women aged 18-35 participated in the study. The effects of 2x8 weeks without (HIIT) or with (HIIT+IF) intermittent fasting caloric restriction (20% reduction in weekly energy intake) on body composition and performance (Hand-grip strength, Counter movement jump, Wingate Anaerobic 30 s Cycling Test), were compared. There were two weeks in between both phases when they did not perform the scheduled activity, so as not to alter the experimental phase.

Inclusion Criteria:

1. No muscular, ligamentous, bone, nerve or joint pathology incompatible with the training program.
2. Not to present cardiovascular or cardiorespiratory problems.
3. Physically active in the last 5 years, according to the American College of Sports Medicine (ACSM) definition.

Exclusion Criteria:

1. Following pharmacological treatment or supplement.
2. Performing other sports activities that may influence the study results during their participation in the study.
3. Not following training or diet program guidelines or attending scheduled training sessions.