Dairy Consumption During a High-intensity, High-volume Training Week in Young Athletes
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- Height (cm)
研究概览
简要总结
Our proposed study is a 5-d double-blind randomised cross-over trial, seeking to simulate a training identification camp in competitive adolescent soccer players
The purpose of the proposed study is to investigate whether increased protein consumption by Greek yogurt, compared to an isoenergetic carbohydrate (CHO) control supplement, consumed immediately following exercise training, prior to sleep and between breakfast and lunch, for a week during an intense training period (high volume, high intensity) will:
- Attenuate the pro-inflammatory response (cytokines, acute phase proteins)
- Reduced the severity of muscle damage and impairment (creatine kinase)
- Maintain performance
Secondary outcome measures:
- Increase bone turnover (in favour of formation)
详细描述
The proposed study is a randomized, double-blinded, cross-over trial. The protocol will consist of an information session, two identical training camps consisting of 5 consecutive days of intensified soccer training, differing only by nutritional intervention, and identical pre-and post-training session testing. Each testing block will be separated by 28-d to allow for an adequate wash-out and recovery period, during which participants would resume their regular soccer activities
Study Procedures:
All tests and measurements will be performed within eight-weeks. Specifically, participants will attend 1 information session, two identical pre- and post- training/testing sessions and two identical soccer specific training camps.
Information session:
One week prior to the initial soccer specific training camp, participants will be informed of all tests and procedures that will take place and be familiarized with all testing protocols.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Other
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 11 Years 至 16 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Participant are female within the desired age ranges (11-16y)
- •Participants are competitive soccer players
- •Previous participation in high-performance training environment (periodization)
排除标准
- •Participant is not female or falls outside of the desired age ranges (11-16y)
- •Chronic/frequent use of medications that could affect inflammatory function - NSAIDS or Corticosteroids.
- •Musculoskeletal injury - resulting in the inability to train and/or perform the baseline/post testing.
研究组 & 干预措施
Greek Yogurt condition
3x 160g of 0% Plain Greek yogurt (~115 kcals, 17 g protein, ~11.5 g carbs, 0 fat) consumed immediately following the training session, 1 h prior to bedtime, as well as one serving between breakfast and lunch on the subsequent day.
干预措施: Greek Yogurt (Other)
Isoenergetic condition - Carbohydrate
3x 30g of isoenergetic CHO supplement (~115 kcal, 0.04 g protein, ~28.6 g carbs, 0 fat) consumed immediately following the training session, 1 h prior to bedtime, as well as one serving between breakfast and lunch on the subsequent day.
干预措施: Isoenergetic carbohydrate (Other)
结局指标
主要结局
Height (cm)
时间窗: 8 weeks
Anthropometric measures
Body fat (%)
时间窗: 8 weeks
Body composition
Serum concentrations of OPG (pg/ml)
时间窗: 8 weeks
Bone formation marker
Serum concentrations of TRAP (ng/ml)
时间窗: 8 weeks
Bone resorption marker
Serum concentrations of CTX (ng/ml)
时间窗: 8 weeks
Bone resorption marker
Body mass (kg)
时间窗: 8 weeks
Anthropometric measures
Serum concentrations of BAP (ng/ml)
时间窗: 8 weeks
Bone formation marker
Serum concentrations of PINP (ng/ml)
时间窗: 8 weeks
Bone formation marker
Serum concentrations of RANKL (pg/ml)
时间窗: 8 weeks
Bone resorption marker
Plasma concentrations of IL-6 (pg/ml)
时间窗: 8 weeks
Plasma concentrations of pro-and-anti-inflammatory cytokines
Plasma concentration of creatine kinase (U/L)
时间窗: 8 weeks
Muscle damage
Seated height (cm)
时间窗: 8 weeks
Used to calculate maturity offset in years from peak height velocity
Rate of perceived exertion
时间窗: 8 weeks
1-10 scale of perceived exertion
Plasma concentrations of TNF-alpha (pg/ml)
时间窗: 8 weeks
Plasma concentrations of pro-and-anti-inflammatory cytokines
Plasma concentrations of irisin (ng/ml)
时间窗: 8 weeks
Plasma concentrations of pro-and-anti-inflammatory cytokines
Plasma concentrations of IL-10 (pg/ml)
时间窗: 8 weeks
Plasma concentrations of pro-and-anti-inflammatory cytokines
Plasma concentrations of CRP (pg/ml)
时间窗: 8 weeks
Plasma concentrations of pro-and-anti-inflammatory cytokines
次要结局
- Serum concentration of IGF-1 (pg/ml)(8 weeks)
- Plasma concentration of TBARS(8 weeks)
- Saliva concentrations of cortisol (ug/dl)(8 weeks)
- Saliva concentrations of testosterone (pg/ml)(8 weeks)
- Plasma concentration of ROS(8 weeks)
- Oxidative stress(8 weeks)
研究者
PKlentrou
Professor and Associate Dean
Brock University