Time-Restricted Feeding Plus Resistance Training in Active Females

Not Applicable

Completed

• Conditions: Healthy Active Females

• Registration Number: NCT03404271
• Lead Sponsor: Texas Tech University

Brief Summary

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.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2018-01-04
• Study First Submitted QC: 2018-01-11
• Study Start: 2018-01-17
• Study First Posted: 2018-01-19
• Primary Completion: 2018-08-15
• Study Completion: 2018-08-15
• Status Verified: 2018-09
• Last Update Submitted: 2018-09-11
• Last Update Posted: 2018-09-12

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 40

Inclusion Criteria

• 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%

Exclusion Criteria

• 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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: FACTORIAL

Primary Outcome Measures

Name	Time	Method
Body fat percentage	8 weeks	Assessed using multi-compartment model
Upper body muscle hypertrophy	8 weeks	Muscle thickness of elbow flexor muscles
Lower body muscle hypertrophy	8 weeks	Muscle thickness of knee extensor muscles
Fat mass	8 weeks	Assessed using multi-compartment model
Fat-free mass	8 weeks	Assessed using multi-compartment model

Secondary Outcome Measures

Name	Time	Method
Blood C-reactive protein	8 weeks	Measured from fasted blood sample
Upper body muscular endurance	8 weeks	Assessed by repetitions to failure on bench press
Cortisol awakening response	8 weeks	Assessed via analysis of saliva samples
Lipid panel	8 weeks	Measured from fasted blood sample
Blood glucose	8 weeks	Measured from fasted blood sample
Blood insulin	8 weeks	Measured from fasted blood sample
Physical activity level	8 weeks	Assessed by accelerometry.
Lower body muscular strength	8 weeks	Assessed by 1RM on leg press
Lower body muscular endurance	8 weeks	Assessed by repetitions to failure on leg press
Upper body muscular strength	8 weeks	Assessed by 1RM on bench press
Sleep quality	8 weeks	Assessed by Pittsburgh Sleep Quality Index
Lower body muscular power characteristics	8 weeks	Assessed during vertical jump and isometric squats
Blood pressure	8 weeks	Measured using automated device
Respiratory quotient	8 weeks	Assessed by indirect calorimetry
Eating behavior	8 weeks	Assessed by three-factor eating questionnaire R18
Arterial compliance	8 weeks	Assessed by applanation tonometry
Resting metabolic rate	8 weeks	Assessed by indirect calorimetry
Mood	8 weeks	Assessed by questionnaire

Trial Locations

Locations (1)

Texas Tech University; 🇺🇸 Lubbock, Texas, United States