The Effects of Lifting Light or Heavy Weights on Muscle Growth and Strength in Trained Young Men

Launched by MCMASTER UNIVERSITY · May 13, 2014

Keywords

ClinConnect Summary

Patients will visit the laboratory of Dr. Stuart Phillips at the Ivor Wynne Centre (IWC) at McMaster University for 14 weeks for a number of tests and exercise sessions.

Each visit will be as follows:

Visit 1:

Upon obtaining consent, eligible participants will complete a medical screening questionnaire to determine their readiness to perform exercise as well as a filling out a form to determine subject characteristics. Participants will begin collecting data for their first 3-day diet record. They will record their diet (2 weekdays and a weekend day) again at 6 weeks (mid-protocol) and a...

Gender

MALE

Eligibility criteria

• Inclusion Criteria:
• • Male
• • Aged 18-30 years old
• • Non-obese (Body mass index less than 30 kg/m2)
• • Non-smoker
• • Healthy based on questionnaire responses (see exclusion criteria)
• • Resistance trained (Resistance training \> 2 times per week for 2 years, minimum 1 lower body exercise session per week)
• Exclusion Criteria:
• • Allergies to milk proteins (whey or casein)
• • Any acute or chronic illness, cardiac, pulmonary, liver, or kidney abnormalities, uncontrolled hypertension, insulin- or non-insulin dependent diabetes or other metabolic disorders-all ascertained through medical history screening questionnaires
• • Arthritic conditions
• • Individuals who consume any analgesic or anti-inflammatory drug(s), prescription or non- prescription, chronically will be excluded
• • A history of neuromuscular problems
• • Individuals on any medications known to affect protein metabolism (i.e. corticosteroids, non-steroidal anti-inflammatories, or prescription strength acne medications).