Effects of natural polyphenol-rich pomegranate juice on the acute and delayed response of Homocysteine and steroidal hormones following weightlifting exercises: a double-blind, placebo-controlled trial

Autor: Achraf Ammar, MounaTurki, Khaled Trabelsi, Nicola Luigi Bragazzi, Omar Boukhris, Mohamed Bouaziz, Fatma Ayadi, Kais El Abed, Tarak Driss, Nizar Souissi, Hamdi Chtourou, Stephen J. Bailey, Anita Hoekelmann
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Journal of the International Society of Sports Nutrition, Vol 17, Iss 1 (2020)
Druh dokumentu: article
ISSN: 1550-2783
13178946
DOI: 10.1186/s12970-020-00345-w
Popis: Background Maximal strength-speed exercise is a powerful stimulus to acutely increase concentrations of circulating steroid hormones and homocysteine [Hcy]. There is some evidence that antioxidant beverages rich in polyphenols can attenuate [Hcy] levels and modulate endocrine responses in favor of an anabolic environment. Polyphenols-rich pomegranate (POM) have been reported to possess one of the highest antioxidant capacities compared to other purported nutraceuticals and other food stuffs. Studies focused on proving the beneficial effect of POM consumption during maximal strength exercises have only measured physical performance, muscle damage, oxidative stress and inflammatory responses, while POM effects on [Hcy] and hormonal adaptations are lacking. The aim of the present study was to investigate the effect of consuming natural polyphenol-rich pomegranate juice (POMj) on the acute and delayed [Hcy] and steroidal hormonal responses to a weightlifting exercises session. Methods Nine elite weightlifters (21.0 ± 1 years) performed two Olympic-weightlifting sessions after ingesting either the placebo (PLA) or POMj supplements. Venous blood samples were collected at rest and 3 min and 48 h after each session. Results Compared to baseline values, circulating cortisol [C] decreased (p
Databáze: Directory of Open Access Journals
Externí odkaz: