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The primary goal of this investigation is to assess whether Solarplast (R) supplementation will improve recovery following heavy resistance exercise in active adults. The primary questions to be addressed are:
Does Solarplast (R) decrease muscle damage and inflammation associated with heavy resistance exercise?
Does Solarplast (R) reduce the decline in performance associate with heavy resistance exercise?
Researchers will compare Solarplast (R) to a placebo (a look-alike substance that contains no active ingredients) to see if Solarplast (R) is effective at improving recovery.
Participants will be asked to:
Take Solarplast (R) or placebo daily for 4 weeks
Visit the laboratory at least once per week to receive their supplement
Report to the lab for 3 consecutive visits following supplementation to complete a heavy resistance training session and follow-up testing.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Solarplast (R) | Active Comparator | 100mg/day of Solarplast (R) supplementation (28 days). |
|
| Placebo | Placebo Comparator | 100mg/day of Placebo (maltodextrin (98.8%) and medium chain triglycerides (1.2%)). |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Solarplast (R) | Dietary Supplement | Daily supplementation for 28 days prior to heavy resistance exercise. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Creatine Kinase Activity | Marker of Muscle Damage | Acute changes following exercise for 48 hours |
| Measure | Description | Time Frame |
|---|---|---|
| Myoglobin Concentration | Marker of Muscle Damage | Acute changes following exercise for 24 hours |
| Vertical Jump Height | Measure of Performance Change |
| Measure | Description | Time Frame |
|---|---|---|
| Rate of Muscular Fatigue | Measure of Performance Change | Acute changes following exercise for 48 hours |
| Rate of Muscular Fatigue | Measure of Performance Change |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Adam R Jajtner, PhD | Contact | 330-672-0212 | 20212 | ajajtner@kent.edu |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Kent State University - Exercise Science & Exercise Physiology | Recruiting | Kent | Ohio | 44242 | United States |
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| Placebo | Dietary Supplement | Daily supplementation for 28 days prior to heavy resistance exercise. |
|
| Acute changes following exercise for 48 hours |
| Mean Squat Velocity | Measure of Performance Change | Acute changes following exercise for 48 hours |
| Peak Isometric Muscle Force | Measure of Performance Change | Acute changes following exercise for 48 hours |
| Rate of Force Development | Measure of Performance Change | Acute changes following exercise for 48 hours |
| Ratings of Perceived Soreness | Visual Analog Scale (1-100mm; low values indicate reduced soreness) | Acute changes following exercise for 48 hours |
| Ratings of Perceived Fatigue | Visual Analog Scale (1-100mm; low values indicated reduced fatigue) | Acute changes following exercise for 48 hours |
| Change in Resting Values over 4 weeks of supplementation |
| Lactate Dehydrogenase Activity | Marker of Muscle Damage | Acute changes following exercise for 48 hours |
| Cortisol Concentration | Circulating Marker of Stress | Acute changes following exercise for 48 hours |
| Cortisol Concentration | Circulating Marker of Stress | Change in Resting Values over 4 weeks of supplementation |
| Glutathione (GSH) Activity | Circulating Marker of Oxidative Stress | Change in Resting Values over 4 weeks of supplementation |
| Glutathione (GSH) Activity | Circulating Marker of Oxidative Stress | Acute changes following exercise for 48 hours |
| Total Antioxidant Capacity | Circulating Marker of Oxidative Stress | Change in Resting Values over 4 weeks of supplementation |
| Total Antioxidant Capacity | Circulating Marker of Oxidative Stress | Acute changes following exercise for 48 hours |
| Interleukin 6 (IL-6) Concentration | Circulating Marker of Inflammation | Change in Resting Values over 4 weeks of supplementation |
| Interleukin 6 (IL-6) Concentration | Circulating Marker of Inflammation | Acute changes following exercise for 48 hours |
| Interleukin 10 (IL-10) Concentration | Circulating Marker of Inflammation | Change in Resting Values over 4 weeks of supplementation |
| Interleukin 10 (IL-10) Concentration | Circulating Marker of Inflammation | Acute changes following exercise for 48 hours |
| Tumor Necrosis Factor - alpha (TNFa) Concentration | Circulating Marker of Inflammation | Change in Resting Values over 4 weeks of supplementation |
| Tumor Necrosis Factor - alpha (TNFa) Concentration | Circulating Marker of Inflammation | Acute changes following exercise for 48 hours |
| Rate of Force Development | Measure of Performance Change | Change in Resting Values over 4 weeks of supplementation |
| Peak Muscle Force | Measure of Performance Change | Acute changes following exercise for 48 hours |
| Vertical Jump Height | Measure of Performance Change | Change in Resting Values over 4 weeks of supplementation |