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  • Title: Effects of resistance training on MRI-derived epicardial fat volume and arterial stiffness in women with obesity: a randomized pilot study.
    Author: Fernandez-del-Valle M, Gonzales JU, Kloiber S, Mitra S, Klingensmith J, Larumbe-Zabala E.
    Journal: Eur J Appl Physiol; 2018 Jun; 118(6):1231-1240. PubMed ID: 29589111.
    Abstract:
    AIM: To date, few studies have analyzed the effects of exercise on cardiac adipose tissue. Overall, exercise programs did not meet the recommendations for significant weight loss, the utilization of resistance training was minimal, and the conclusions derived from these studies have diminished exercise as a strategy for cardiac fat loss. PURPOSE: The objective of this pilot study was to analyze the effects of 3-week high-intensity, moderate-volume muscular endurance resistance training (RT) on cardiac fat and arterial stiffness. METHODS: A total of 11 young females with obesity, BMI = 34.13 (± 3.16) kg/m2 (n = 5 control, n = 6 intervention) completed the study. Absolute strength was assessed using one repetition maximum test (1RM) for bench press (BP) and leg press (LP), and relative strength was calculated using body weight (BW) as BP-to-BW and LP-to-BW ratio. Magnetic resonance was used to quantify epicardial and paracardial adipose tissue (EAT and PAT) volume, and applanation tonometry was used to assess arterial stiffness by estimating pulse wave velocity (PWV). RESULTS: EAT and PAT volumes (ml) showed significant interaction effects (p = 0.037 and p = 0.031), and very large changes (d > 1) of EAT (p = 0.006) and PAT (p = 0.036) in the intervention group. In addition, strength was significantly improved, including BP (p = 0.003), LP (p = 0.001), BP-to-BW ratio (p = 0.001), and LP-to-BW ratio (p = 0.002), while no changes were found in PWV. CONCLUSIONS: High-intensity, moderate-volume RT, designed to enhance muscular endurance following the recommendations reduces EAT and PAT volumes, improves physical fitness in females with obesity, and has no negative effects on arterial stiffness.
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