Differential effects of intermittent energy restriction vs. continuous energy restriction combined high-intensity interval training on overweight/obese adults: A randomized controlled trial

• DOI: 10.3389/fnut.2022.979618
• Publication Date: 2022-11-08T04:51:57Z
• Authors: Rui Xu; You-Xiang Cao; Yu-Ting Chen; Yu-Qi Jia
• Keywords: Interval training; High-Intensity Interval Training

Background Intermittent energy restriction (IER) and continuous (CER) are increasingly popular dietary approaches used for weight loss overall health. These protocols combined with exercise on other health outcomes could achieve additional effects in a short-term intervention. Objectives To evaluate the of 4-week IER or CER program weight, blood lipids, CRF overweight/obese adults when high-intensity interval training (HIIT). Methods Forty-eight [age: 21.3 ± 2.24 years, body mass index (BMI): 25.86 2.64 kg⋅m –2 ] were randomly assigned to iER, cER, normal diet (ND) groups ( n = 16 per group), each consisting All completed HIIT intervention (3 min at 80% V̇O 2m ax followed by 3 50% ), 30 min/training sessions, five sessions week. iER subjects consumed 30% needs 2 non-consecutive days/week, 100% another 5 days; cER 70% needs; ND needs. Body composition, waist circumference (WC) hip (HC), triglyceride (TG), total cholesterol (TC), low-density lipoprotein-cholesterol (LDL-c), high-density (HDL-c), cardiorespiratory fitness (CRF) measured before after Results Of 57 participants who underwent randomization, 48 (84.2%) After composition decreased three groups, but no significant differences between groups. The tends be superior reduction circumference. mean was 4.57 kg (95% confidence [CI], 4.1–5.0, p < 0.001) 2.46 CI, iER. analyses BMI, BF%, WC, HC consistent primary outcome results. In addition, TG, TC, HDL-c, improved without changes > 0.05). Conclusion Both effective increased HIIT. However, showed greater benefits compared cER.