Gaamouri Nawel, Zouhal Hassane, Suzuki Katsuhiko, Hammami Mehrez, Ghaith Aloui, El Mouhab El Hafedh, Hackney Anthony C, Laher Ismail, Ounis Omar Ben
Research Unit «Sport Performance, Health & Society», Higher Institute of Sport and Physical Education of Ksar Saîd, University of "La Manouba", Tunis, Tunisia.
Higher Institute of Sport and Physical Education of Ksar Said, University of "La Manouba", Tunis, Tunisia.
Biol Sport. 2024 Oct;41(4):277-284. doi: 10.5114/biolsport.2022.106154. Epub 2024 Jun 17.
Excessive exercise can induce cell damage and impair muscle function by generating oxidative stress. Carob rich phenolic components have attracted the attention of many researchers because of their antioxidant actions. We utilized a double-blind randomized placebo-controlled design to study the putative antioxidant role of six weeks of daily polyphenol supplementation on selected blood markers of oxidative stress and performance in taekwondo athletes. We studied the effects of daily supplementation with carob (40 g/d, for six-weeks) on performance levels and antioxidant capacity in 22 taekwondo athletes (age 21.9 ± 1.2 years; height 1.66 ± 0.34 m; weight 68.3 ± 16.9 kg; women = 10, men = 12) using a randomized, double-blinded study. Participants were divided into an experimental group (EG) or placebo group (PG). All athletes performed a frequency speed of kick test mult (FSKT) before and after a six-week training period. Superoxide dismutase (SOD), catalase (CAT), and malondialdehyde (MDA) were measured 5 min after a FSKT. Physical performances improved significantly after six weeks in EG compared to PG for kicks number per set (from set 1 to set 5: p = 0.032, d = 0.70; p = 0.020, d = 0.77; p = 0.001, d = 1.12; p = 0.001, d = 1.25; p = 0.003, d = 1.01), total kicks number (p = 0,002, d = 1.04), and kick decrement index (%) (p = 0.017, d = 0.13). There were significant increases in CAT (p = 0.001, d = 1.85) and SOD (p = 0.001, d = 1.98) activities and significant decreases in MDA levels (p = 0.002, d = 0.81) in the EG. Carob supplementation during a six-week training program reduced oxidative stress and improved physical performance levels in taekwondo athletes.
过度运动会通过产生氧化应激诱导细胞损伤并损害肌肉功能。富含酚类成分的角豆因其抗氧化作用吸引了众多研究人员的关注。我们采用双盲随机安慰剂对照设计，研究了为期六周的每日多酚补充剂对跆拳道运动员氧化应激和运动表现的选定血液标志物的假定抗氧化作用。我们研究了22名跆拳道运动员（年龄21.9±1.2岁；身高1.66±0.34米；体重68.3±16.9千克；女性=10人，男性=12人）每日补充角豆（40克/天，持续六周）对运动表现水平和抗氧化能力的影响，采用随机双盲研究。参与者被分为实验组（EG）或安慰剂组（PG）。所有运动员在为期六周的训练期前后都进行了踢腿频率速度测试（FSKT）。在FSKT后5分钟测量超氧化物歧化酶（SOD）、过氧化氢酶（CAT）和丙二醛（MDA）。与PG相比，EG在六周后每组踢腿次数（从第1组到第5组：p = 0.032，d = 0.70；p = 0.020，d = 0.77；p = 0.001，d = 1.12；p = 0.001，d = 1.25；p = 0.003，d = 1.01）、总踢腿次数（p = 0.002，d = 1.04）和踢腿减量指数（%）（p = 0.017，d = 0.73）方面的身体表现有显著改善。EG组的CAT（p = 0.001，d = 1.85）和SOD（p = 0.001，d = 1.98）活性显著增加，MDA水平显著降低（p = 0.002，d = 0.81）。在为期六周的训练计划中补充角豆可降低跆拳道运动员的氧化应激并提高身体表现水平。
