The Effect of an Extra High Protein Diet on Lean Mass Sparing During Energy Restriction in Resistance Trained Athletes

Not Applicable

Recruiting

Conditions: M62.5
Muscle wasting and atrophy, not elsewhere classified

Registration Number: DRKS00032127

Lead Sponsor: Institut für Sportwissenschaften, Goethe-Universität Frankfurt am Main

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Recruiting

Sex: All

Target Recruitment: 30

Inclusion Criteria

healthy subjects with strength training experience (> 1.5 years)
- body fat percentage <25 % (men) and <35 % (women)

Exclusion Criteria

- exercise inactivity: less than an average of three sessions of strength training per week in the three months prior to the start of intervention
- Injuries or acute illnesses
- Medication use (with the exception of antihistamines, among others)
- Use of substances that are on the doping list
- Excessive alcohol consumption (> 26g pure alcohol/week)

Study & Design

Study Type: interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
The primary aim of the study is to investigate muscle mass.<br>For this purpose, the muscle thickness of the M. rectus femoris is determined by ultrasound and the total body lean mass is estimated by multifrequency bioelectrical impedance analysis and caliper utilizing a 3-compartment model . Measurements are made PRE, MID and POST.<br>To control for muscle sparing factors, subjects will perform a daily food diary and three weekly standardized sessions of strength training under the supervision of an investigator.<br><br>The exact times of data collection are as follows:<br><br>day 1, a.m. (PRE); day 15, a.m. (MID); day 29, a.m. (POST):<br>- muscle thickness of the rectus femoris muscle (ultrasound)<br>- total lean mass (BIA and caliper)<br><br>days 1-28, daily:<br>- nutrition diary<br><br>for each training session, 12x per subject in total:<br>- training protocol<br>

Secondary Outcome Measures