Effect of High-Intensity Interval Training and Intermittent Fasting on Body Composition and Physical Performance in Active Women.
Alejandro Martínez-RodríguezJacobo Ángel Rubio-AriasJosé M García-De FrutosManuel Vicente-MartínezThomas G P GunnarssonPublished in: International journal of environmental research and public health (2021)
Nutritional strategies may have an effect on body composition and physical performance. Intermittent fasting (IF) is an eating pattern that cycles between periods of eating and fasting in specified time periods. Moreover, it is a common strategy among members of the athlete population that are looking for weight loss. However, this strategy may negatively affect physical performance, as compared to other weight loss strategies. The main purpose of this research was to use a cross-over design to study the effects of HIIT, with or without intermittent fasting, on muscular and anaerobic performance in 14 active women (27 ± 6 y). To assess performance, body composition (anthropometry), hand-grip strength, and counter-movement jump (CMJ) height was measured, and a 30 s Wingate test was completed assessed. HIIT + IF reduced fat mass (1 kg, p < 0.05, d = 1.1; 1.5%, p < 0.01, d = 1.0) and increased CMJ height (6.2 cm, p < 0.001, d = 1.8). In addition, the change in CMJ height in HIIT + IF was higher over HIIT (5.2 cm, p < 0.001, d = 1.9). In conclusion, intermittent fasting could be a nutritional strategy to decrease fat mass and increase jumping performance. However, longer duration programs would be necessary to determine whether other parameters of muscle performance could be positively affected by IF.
Keyphrases
- body composition
- high intensity
- weight loss
- resistance training
- blood glucose
- physical activity
- insulin resistance
- bone mineral density
- body mass index
- bariatric surgery
- polycystic ovary syndrome
- roux en y gastric bypass
- adipose tissue
- mental health
- glycemic control
- gastric bypass
- microbial community
- public health
- pregnancy outcomes
- fatty acid
- metabolic syndrome
- blood pressure
- pregnant women
- obese patients
- risk assessment