Collagen Synthesis, Rate of Force (RFD) Development
Conditions
Keywords
exercise, performance, athletes
Brief summary
Determine whether supplementation with a combined dose of 20 g of hydrolyzed collagen and 50 mg vitamin C, along with a power training exercise program, increases rate of force development (RFD) and performance in athletes
Interventions
DIETARY_SUPPLEMENTCollagen and Vitamin C powder mix nutritional intervention
20 g collagen + 50 mg vitamin C daily, 60 min prior to exercise
OTHERMaltodextrin placebo powder
20 g maltodextrin placebo daily, 60 min prior to exercise
OTHERMaximum power training exercise
Explosive/power-based exercise training program 3 times/week at home consisting of drop jumps, box jumps, weighted jump squats loaded in a progressive manner weekly for 3 weeks. At baseline and at the end of each of the 3 weeks, measures of explosive performance are assessed in the lab (maximal isometric squat, counter-movement jump and squat jump)
Sponsors
PepsiCo Global R&D
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Masking description
Sealed opaque packets coded by Sponsor's Product Development
Eligibility
Sex/Gender
MALE
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
1. Healthy male athletes between 18-30 years of age 2. Currently participating in sport 3. \<3 musculoskeletal injuries in the past year 4. No health or dietary restriction that would be affected by the supplementation protocol
Exclusion criteria
1. History of more than 3 musculoskeletal injuries within the past 12 months 2. Health, dietary restriction or diet that would be affected by the supplementation protocol 3. Willing to eat similar dietary pattern the day before baseline testing and each exercise testing/intervention day
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Maximal rate of force development (RFD) of isometric squat (MIS) | % change from baseline to week 1, week 2 and week 3 | Force (N) over time (msec) for the maximum slope of the first 20% of the movement |
| Counter-movement jump (CMJ) rate of force development (RFD) | % change from baseline to week 1, week 2 and week 3 | CMJ jump performance N/s/kg |
| Squat jump height rate of force development (RFD) | % change from baseline to week 1, week 2 and week 3 | Squat jump height performance RFD/kg |
Other
| Measure | Time frame | Description |
|---|---|---|
| Maximum peak force of maximal isometric squat (MIS) | % change from baseline to week 1, week 2 and week 3 | Peak force (N) |
| Leg stiffness assessment | % change from baseline to week 1, week 2 and week 3 | Tendon stiffness mean per kg (N/m/kg) |
| Counter-movement jump (CMJ) net eccentric impulse | % change from baseline to week 1, week 2 and week 3 | Jump performance max N/s/kg (Note: Eccentric is the drop down part of the CMJ) |
| Counter-movement jump (CMJ) net concentric impulse | % change from baseline to week 1, week 2 and week 3 | Jump performance max N/s/kg (Note: Concentric is the movement upwards of the CMJ) |
Countries
United States
Outcome results
None listed