A Randomized, Double-blind, Placebo-controlled, Three-arm Trial to Evaluate the Effect of Using Whey Protein and Creatine Supplements on Muscular Strength in Weight-training Adult Males
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 18
- 试验地点
- 1
- 主要终点
- To evaluate the effect of combined whey protein and creatine supplement, as compared with whey protein supplement alone, on change in upper body strength from Baseline to Week 4.
研究概览
简要总结
The purpose of this study was to evaluate the effect of combined whey protein and creatine supplement, as compared with whey protein supplement alone, on change in upper and lower body strength.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Recreationally active males
- •Age 18 to 35 years
- •BMI 19 to 29.9 kg/m2
- •Weight training 3 to 4 times a week for at least 6 months before the trial
排除标准
- •Participants with medical conditions including active heart disease, high blood pressure, renal or hepatic impairment type I or II diabetes, bipolar disease, pulmonary disease, thyroid disease, immune disorder, psychiatric disorder
- •Dietary or herbal supplement used in the past 60 days to increase muscle mass
- •Use of protein supplement in the past 7 days
- •Use of thermogenic supplement or beverage in the past 7 days
- •Use of Non-steroidal anti inflammatory drugs or corticosteroids in the past 7 days
研究组 & 干预措施
Whey protein and creatine supplement
Each sachet contained 30g whey protein powder and 5g creatine powder, administered twice a day. The first serving was consumed with breakfast and the second serving was consumed within 60 minutes of completing training or in the evening on non-training days. Participants also drank at least 2 litres of water per day
干预措施: Whey protein and creatine supplement (Dietary Supplement)
Whey protein only supplement
Each sachet contained 30g of whey protein powder and 5g of bulking agent powder, administered twice a day. The first serving was consumed with breakfast and the second serving was consumed within 60 minutes of completing training or in the evening on non-training days. Participants also drank at least 2 litres of water per day
干预措施: Whey protein only supplement (Dietary Supplement)
Placebo
Each sachet contained 30g of isocaloric carbohydrate powder and 5g of bulking agent powder, administered twice a day. The first serving was consumed with breakfast and the second serving was consumed within 60 minutes of completing training or in the evening on non-training days. Participants also drank at least 2 litres of water per day
干预措施: Placebo (Dietary Supplement)
结局指标
主要结局
To evaluate the effect of combined whey protein and creatine supplement, as compared with whey protein supplement alone, on change in upper body strength from Baseline to Week 4.
时间窗: Baseline, Week 2, 4, 8 and 12
Body strength will be evaluated using Repetition maximum (1-RM) and bench and leg press exercise testing. 1-RM in weight training is the maximum amount of weight one can lift in a single repetition for a given exercise
次要结局
- To compare changes in upper and lower body endurance from Baseline through Week 12, between combined whey protein and creatine supplement, whey protein supplement alone, and placebo.(Baseline, Week 2, 4, 8 and 12)
- To compare the changes in lean vs. fat body mass composition from Baseline to Week 12 between combined whey protein and creatine supplement, whey protein supplement alone, and placebo.(Baseline and Week 12)
- To evaluate the effect of combined whey protein and creatine supplement, as compared with placebo, on changes in upper and lower body strength from Baseline through Week 12.(Baseline, Week 2, 4, 8 and 12)
- To compare changes in upper and lower body strength from Baseline through Week 12, between combined whey protein and creatine supplement, whey protein supplement alone, and placebo.(Baseline, Week 2, 4, 8 and 12)
- To evaluate the effect of combined whey protein and creatine supplement, as compared with whey protein supplement alone, on changes in upper and lower body strength from Baseline through Week 12(Baseline, Week 2, 4, 8 and 12)