Time-Restricted Feeding Plus Resistance Training in Active Females: Effects on Body Composition, Muscular Performance and Physiological Variables
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- Body fat percentage
研究概览
简要总结
The objective of this study is to examine the effects of time-restricted feeding (TRF; consuming all calories within an 8-hour period of time each day) and resistance training, with or without the addition of the dietary supplement HMB, on body composition, muscular performance and physiological outcomes in active females.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Factorial
- 主要目的
- Other
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
盲法说明
Investigators and participants will be blinded to dietary supplement (i.e. HMB or placebo). However, neither the investigators nor participants will be blinded to dietary intervention (TRF or ND) due to the nature of these dietary programs. When possible, outcome assessors will be blinded to group assignment.
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Female between 18 and 30 years of age
- •Current university affiliation
- •Weighing at least 110 pounds
- •Generally healthy
- •Resistance-trained
- •Schedule availability to complete supervised resistance training
- •Body fat percentage between 15 and 29%
排除标准
- •Pregnant or trying to become pregnant
- •Currently breastfeeding
- •Any disease, condition or orthopedic limitation that would prevent safe participation in resistance training or time-restricted feeding
- •Current smoker
- •Presence of pacemaker or other electrical implant
- •Allergic to dairy proteins
研究组 & 干预措施
Normal Diet
Participants in the normal diet (ND) group will follow a traditional dietary pattern, consisting of eating breakfast and continuing to eat throughout the day until the evening. Participants in this group will receive placebo capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Resistance Training (Other)
Normal Diet
Participants in the normal diet (ND) group will follow a traditional dietary pattern, consisting of eating breakfast and continuing to eat throughout the day until the evening. Participants in this group will receive placebo capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Protein Supplementation (Dietary Supplement)
Time-Restricted Feeding
Participants in the time-restricted feeding (TRF) group will consume all calories within an 8-hour period of time each day. Participants in this group will receive placebo capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Resistance Training (Other)
Time-Restricted Feeding
Participants in the time-restricted feeding (TRF) group will consume all calories within an 8-hour period of time each day. Participants in this group will receive placebo capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Protein Supplementation (Dietary Supplement)
Time-Restricted Feeding
Participants in the time-restricted feeding (TRF) group will consume all calories within an 8-hour period of time each day. Participants in this group will receive placebo capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Time-Restricted Feeding (Behavioral)
Time-Restricted Feeding plus HMB
Participants in the time-restricted feeding plus HMB (TRF+HMB) group will consume all calories within an 8-hour period of time each day. Participants in this group will receive HMB capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Beta-hydroxy beta-methylbutyrate (Dietary Supplement)
Time-Restricted Feeding plus HMB
Participants in the time-restricted feeding plus HMB (TRF+HMB) group will consume all calories within an 8-hour period of time each day. Participants in this group will receive HMB capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Resistance Training (Other)
Time-Restricted Feeding plus HMB
Participants in the time-restricted feeding plus HMB (TRF+HMB) group will consume all calories within an 8-hour period of time each day. Participants in this group will receive HMB capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Protein Supplementation (Dietary Supplement)
Time-Restricted Feeding plus HMB
Participants in the time-restricted feeding plus HMB (TRF+HMB) group will consume all calories within an 8-hour period of time each day. Participants in this group will receive HMB capsules. Participants in all groups will follow an identical resistance training program and be provided with whey protein supplements.
干预措施: Time-Restricted Feeding (Behavioral)
结局指标
主要结局
Body fat percentage
时间窗: 8 weeks
Assessed using multi-compartment model
Upper body muscle hypertrophy
时间窗: 8 weeks
Muscle thickness of elbow flexor muscles
Lower body muscle hypertrophy
时间窗: 8 weeks
Muscle thickness of knee extensor muscles
Fat mass
时间窗: 8 weeks
Assessed using multi-compartment model
Fat-free mass
时间窗: 8 weeks
Assessed using multi-compartment model
次要结局
- Blood C-reactive protein(8 weeks)
- Upper body muscular endurance(8 weeks)
- Cortisol awakening response(8 weeks)
- Lipid panel(8 weeks)
- Blood glucose(8 weeks)
- Blood insulin(8 weeks)
- Mood(8 weeks)
- Physical activity level(8 weeks)
- Lower body muscular strength(8 weeks)
- Lower body muscular endurance(8 weeks)
- Upper body muscular strength(8 weeks)
- Sleep quality(8 weeks)
- Lower body muscular power characteristics(8 weeks)
- Blood pressure(8 weeks)
- Respiratory quotient(8 weeks)
- Eating behavior(8 weeks)
- Arterial compliance(8 weeks)
- Resting metabolic rate(8 weeks)