■在体育科学领域,营养是运动员训练的一个既定支柱,性能,和锻炼后的恢复。然而,肠道微生物群的作用,经常被忽视,是一个新颖而有趣的方面,可以显着影响运动表现。考虑到这一点,我们的研究冒险进入未知的领域,研究补充益生菌和酪蛋白对男性足球运动员有氧能力的影响。
■对44名男性足球运动员进行了双盲和安慰剂对照研究(年龄:22.81±2.76岁,高度:177.90±6.75厘米,重量:67.42±8.44公斤)。参与者在开始时接受了布鲁斯测试;然后,他们被随机分为四组,每个人包括11人:益生菌(PRO),酪蛋白(CAS),含酪蛋白的益生菌(PRO+CAS),安慰剂(PLA)。PRO组给予一种益生菌胶囊(含植物乳杆菌BP06,干酪乳杆菌BP07,嗜酸乳杆菌BA05,保加利亚德氏乳杆菌BD08,婴儿双歧杆菌BI04,长双歧杆菌BL03,短双歧杆菌BB02和唾液嗜热链球菌BT01,总剂量为4.5×1011CFU),晚餐时,而CAS组睡前45分钟食用酪蛋白粉20克。PRO+CAS组在晚餐时给予1粒益生菌胶囊,睡前45分钟给予20克酪蛋白粉。PLA组的参与者在晚餐时给予一个红色胶囊(含有5克淀粉)。所有参与者被指示仅在培训日服用补充剂,一周三次,四个星期。最大耗氧量(VO2max),通气阈值(VT),耗尽时间(TTE),呼吸补偿点(RCP),等大西洋区域时间(Time-IC),等氧区耗氧量(VO2-IC),和低碳酸血症换气过度区域时间(Time-HHV),在测量布鲁斯测试后。所有数据均使用SPSSWindows软件进行分析,混合重复测量方差分析,和Bonferroni事后检验在p<0.05水平。
■当前的研究结果表明,干预之后,与PLA组相比,PRO+CAS组的TTE(p=0.01)和RCP(p=0.01)显著改善。PRO和PLA之间没有观察到显著差异(p=0.52),PRO和CAS(p=0.999),PRO和PRO+CAS(p=0.9),CAS和PLA(p=0.65),TTE中的CAS和PRO+CAS(p=0.73)。此外,PRO和CAS之间没有观察到显著差异(p=0.999),PRO和PLA(p=0.40),PRO和PRO+CAS(p=0.999),CAS和PLA(p=0.263),RCP中的CAS和PRO+CAS(p=0.999)。与PLA组相比,PRO+CAS(p=0.000)和CAS(p=0.047)的Time-HHV显著升高。然而,在PRO和CAS之间的时间-HHV没有观察到显著差异(p=0.999),PRO和PRO+CAS(p=0.25),PRO和PLA(p=0.12),和CAS和PRO+CAS(p=0.57)。此外,各组VO2max无显著性差异,VT1、VO2-IC和Time-IC。
■研究结果表明,摄入益生菌和酪蛋白可以相对提高男性足球运动员的有氧能力。然而,同时食用益生菌和酪蛋白对有氧能力指标有更明显的影响,特别是TTE和Time-HHV。
UNASSIGNED: In the realm of sports science, nutrition is a well-established pillar for athletes\' training, performance, and post-workout recovery. However, the role of gut microbiota, often overlooked, is a novel and intriguing aspect that can significantly impact athletic performance. With this in mind, our study ventures into uncharted territory, investigating the effect of probiotic and
casein supplementation on the aerobic capacity of male soccer players.
UNASSIGNED: A double-blinded and placebo-controlled study was conducted with 44 male soccer players (Age: 22.81 ± 2.76 yr, Height: 177.90 ± 6.75 cm, Weight: 67.42 ± 8.44 kg). The participants were subjected to the Bruce test in the beginning; then, they were randomly divided into four groups, each consisting of 11 people: probiotics (PRO),
casein (CAS), probiotics with
casein (PRO+CAS), and placebo (PLA). PRO group was given one probiotic capsule (containing strains of Lactiplantibacillus plantarum BP06, Lacticaseibacillus casei BP07, Lactobacillus acidophilus BA05, Lactobacillus delbrueckii BD08 bulgaricus, Bifidobacterium infantis BI04, Bifidobacterium longum BL03, Bifidobacterium breve BB02 and Streptococcus salivarius thermophilus BT01, with a total dose of 4.5 × 1011 CFU) during dinner, while the CAS group consumed 20 grams of
casein powder 45 minutes before bed. The PRO+CAS group was given one probiotic capsule during dinner and 20 grams of
casein powder 45 minutes before bed. The participants in the PLA group were given one red capsule (containing 5 grams of starch) during dinner. All participants were instructed to take the supplements only on training days, three times a week for four weeks. The maximal oxygen consumption (VO2max), Ventilatory Threshold (VT), Time-to-exhaustion (TTE), Respiratory Compensation Point (RCP), Isocapnic area Time (Time-IC), Isocapnic area oxygen consumption (VO2-IC), and Hypocapnic Hyperventilation area Time (Time-HHV), after the Bruce test were Measured. All data were analyzed using SPSS Windows software, mixed repeated measure ANOVA, and Bonferroni post hoc test at p < 0.05 level.
UNASSIGNED: The current study\'s findings illustrated that, after the intervention, TTE (p = 0.01) and RCP (p = 0.01) were significantly improved in PRO+CAS compared to the PLA group. No significant difference was observed between PRO and PLA (p = 0.52), PRO and CAS (p = 0.999), PRO and PRO+CAS (p = 0.9), CAS and PLA (p = 0.65), CAS and PRO+CAS (p = 0.73) in TTE. In addition, no significant difference was observed between PRO and CAS (p = 0.999), PRO and PLA (p = 0.40), PRO and PRO+CAS (p = 0.999), CAS and PLA (p = 0.263), CAS and PRO+CAS (p = 0.999) in RCP. Time-HHV was significantly higher in PRO+CAS (p = 0.000) and CAS (p = 0.047) compared to the PLA group. However, no significant difference was observed in the Time-HHV between PRO and CAS (p = 0.999), PRO and PRO+CAS (p = 0.25), PRO and PLA (p = 0.12), and CAS and PRO+CAS (p = 0.57). Additionally, all the groups had no significant differences in VO2max, VT1, VO2-IC and Time-IC.
UNASSIGNED: The findings showed that consuming probiotics and casein could relatively improve the aerobic capacity of male soccer players. Nevertheless, simultaneous consumption of probiotics and casein had a more pronounced effect on aerobic capacity indicators, especially TTE and Time-HHV.