TY - JOUR ID - 15526 TI - Effects of Improved Sleep Quality with Administration of Melatonin plus GABA on Total-body Skeletal Muscle Mass of Amateur CrossFit Athletes JO - New Approaches in Exercise Physiology JA - NASS LA - en SN - 2588-6614 AU - Savioli, Fellipe Pinheiro AU - Cerf Sprey, Jan Willem AU - Mei, Paulo Afonso AU - Nardy Paula Razuck, Nicole AU - Thabata Bruno Cilla, Gabriela AU - Ciocler Trahtenberg, Tatiana AU - Giorelli, Guilherme de Vieira AU - Jorge, Pedro Baches AD - Irmandade da Santa Casa de Sao Paulo AD - Irmandade da Santa Casa de São Paulo AD - Department of Neurology and Sleep Medicine Sao Leopoldo Mandic Medical College, Campinas AD - Cilla nutrition center AD - Santa Marcelina Medical College AD - Hospital Israelita Albert Einstein Y1 - 2022 PY - 2022 VL - 4 IS - 8 SP - 89 EP - 127 KW - crossfit KW - exercise recovery KW - Sleep Quality KW - skeletal muscle mass DO - 10.22054/nass.2023.72514.1124 N2 - Purpose: Sleep and exercise influence each other through complex interactions. Sleep disorders incidence in athletes are high among several sports. Method: 24 CrossFit practitioners, of both genders, between the ages of 25 and 35, presenting difficulty in initiating sleep, with a total sleep time of less than 6 hours per night, were recruited into a double-blind, randomized, placebo-controlled trial that lasted 8 weeks. Participants received capsules containing 3 mg of melatonin + 1200 mg of GABA (gamma-Aminobutyric acid) or placebo at 10:00 pm daily. Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI), cortisol and testosterone levels were measured and total-body skeletal muscle mass (TBSMM) by Lee’s equation performed by two different examiners. Results: Group melatonin + GABA gained an average of 600g of TBSMM while the control group lost 200g (p = 0.295). Both groups improve PSQI score (p = 0.007). No difference was found in cortisol and testosterone level. Conclusions: Although there was a difference between groups about TBSMM, it wasn’t statistically significant. Further studies will be necessary to demonstrate evidence of increased TBSMM from better sleep quality, with a larger number of participants and a longer trial. UR - https://nass.atu.ac.ir/article_15526.html L1 - https://nass.atu.ac.ir/article_15526_d810619b5159e33e50691ffc2c680b66.pdf ER -