The Benefits of Hemp Protein Supplementation During Resistance Training
- Conditions
- Sarcopenia
- Interventions
- Dietary Supplement: Hemp powderDietary Supplement: Soy Powder
- Registration Number
- NCT02529917
- Lead Sponsor
- University of Saskatchewan
- Brief Summary
Forty physically active men and women aged 18-45y will take part in an 8-week resistance training program, randomized (double blind) 1:1 into each of two groups. Twenty participants will be randomized to receive 60 g/d of hemp powder (containing approximately 40 g protein and 9 g oil) supplementation and 20 randomized to receive 60 g/d of soy supplementation (matched to the hemp for macronutrients and calories) during eight weeks of training. Each participant will complete testing before and after the intervention for assessment of body composition (lean tissue, fat, and bone mass), strength, central fatigue, markers of inflammation, and bone resorption. Over the 8-weeks of training, participants will train four-five days per week for 1-1.5 hours per session with exercises targeting all major muscle groups. The training will involve a "two day split" where different muscle groups are trained on two consecutive days (day 1 involves chest, back, and arms; day 2 legs, shoulders, and abdominals). Resistance training will provide the necessary stimulus for protein synthesis to optimize the effect of a protein-containing nutritional supplement. The hemp or soy powder will be consumed in two doses (i.e. 30 g powder containing 20 g protein per dose) immediately after exercise sessions and one hour after exercise. This dosing regimen is optimal for stimulating muscle protein synthesis and building muscle mass . On the one non-training day per week the two doses will be consumed with meals.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 34
- At least 6 months experience with resistance training
- Allergies to hemp or soy
- Consumption of other nutritional supplements in previous month
- Answered "yes" to questions on the Physical Activity Readiness Questionnaire
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Hemp powder Hemp powder Hemp powder supplement Soy powder Soy Powder Soy powder supplement
- Primary Outcome Measures
Name Time Method Change in lean tissue mass (kg) 8 weeks Lean tissue mass measured with dual energy x-ray absrorptiometry
- Secondary Outcome Measures
Name Time Method Change in bone mass (grams) 8 weeks Bone mass as measured by dual energy x-ray absorptiometry
Change in bench press strength (kg) 8 weeks Bench press strength as assess on a plate-loaded machine by the 1-RM method
Change in arm curl strength (kg) 8 weeks Arm curl strength as assessed with dumbbells by the 1-RM method
Change in leg press strength (kg) 8 weeks Leg press strength as assessed on a leg-press machine by the 1-RM method
Change in inflammation by interleukin-6 (mmol/l) levels 8 weeks Interleukin-6 levels measured from saliva samples
Change in inflammation by C-reactive protein (mmol/l) levels 8 weeks C-reactive protein levels measured from saliva samples
Change in elbow flexor muscle thickness (cm) 8 weeks Muscle thickness as assessed by ultrasound
Change in bone resorption (N-telopeptides) (mmol/l) 8 weeks N-telopeptides measured from urine samples
Change in fat mass (kg) 8 weeks Fat mass as measured by dual energy x-ray absorptiometry
Change in knee extensor muscle thickness (cm) 8 weeks muscle thickness as measured by ultrasound
Change in voluntary muscle activation (Nm) 8 weeks Voluntary muscle activation as measured by the interpolated twitch technique
Trial Locations
- Locations (1)
University of Saskatchewan
🇨🇦Saskatoon, Saskatchewan, Canada