A Phase 1 interventional study of Sportlegs and Placebo in Performance Enhancing Product Use, sponsored by Christopher Bell. Completed at 1 site in United States. Open to participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-07-12.
Sponsored by Christopher Bell · Phase 1, Interventional, and Basic science
Sportlegs is a commercially available dietary/sports supplement. It is manufactured by a local, Colorado-based company: Sport Specifics Inc. Although Sportlegs has been on the market for approximately 20-years, very little empirical research has been completed to determine if Sportlegs improves exercise performance. Sport Specifics Inc. has commissioned Colorado State University to investigate the ergogenic effects of Sportlegs.
Christopher Bell is the lead sponsor of 9 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Participants will ingest either Sportlegs or placebo. The Sportlegs (and placebo) will be ingested as dietary capsules taken with water. 30-minutes after ingestion, the VO2max and lactate threshold testing will commence. This will involve a graded exercise test on a cycle ergometer to volitional fatigue. Heart rate and gas exchange will be measured prior to and throughout the exercise test. Blood will be sampled approximately every 60-seconds from a venous catheter placed in a hand or wrist vein, or from a finger using a lancet and cappillary tube. The amount of blood to be sampled is up to \~2-3 ml per sample, totalling less than 40 mL per lab visit. The blood will be immediately analyzed for lactate concentration using an automated analyzer. Ratings of Perceived Exertion will be recorded every \~2 minutes. VO2max and lactate threshold are considered important predictors of exercise performance.
Dietary Supplement: Sportlegs · Dietary Supplement: Placebo
The Sportlegs (and placebo) will be ingested as dietary capsules taken with water. 30-minutes after ingestion, participants will begin the FTP20 test. Following a brief, standardized warm-up, participants will exercise on a stationary cycle ergometer at the highest intensity they are able to sustain for 20-minutes. This is akin to a "time-trial" where cyclists cover as greater distance as possible during a pre-determined period of time. During the FTP20 test, work rate will be monitored and recorded, as will heart rate (monitored continuously but only recorded every 5-minutes via short range telemetry or ECG). Rating of perceived exertion will also be assessed and recorded every 5-minutes. The FTP20 test is considered an important predictor of exercise performance.
Dietary Supplement: Sportlegs · Dietary Supplement: Placebo
Sportlegs contains lactate (from calcium lactate pentahydrate and magnesium lactate dihydrate), magnesium (from magnesium lactate dihydrate), calcium (from calcium lactate pentahydrate), and vitamin D (as cholecalciferol).
Empty Capsules to serve as a placebo control
Maximal Oxygen Uptake
To compare VO2max, determined during incremental stationary cycle ergometer exercise, in young healthy adults after acute ingestion of placebo and Sportlegs.
Time frame: 30 minutes following Sportlegs or Placebo ingestion.
Lactate Threshold
To compare lactate threshold, determined during incremental stationary cycle ergometer exercise, in young healthy adults after acute ingestion of placebo and Sportlegs.
Time frame: 30 minutes following Sportlegs or Placebo ingestion
Rating of Perceived Exertion (RPE)
To compare perceived rates of exertion, determined during stationary cycle ergometer exercise, in young healthy adults after acute ingestion of placebo and Sportlegs.
Time frame: During the VO2max and maximal mean power tests
Maximal sustained mean power
To compare the maximal mean power that can be sustained on a cycle ergometer for 20-min, in young healthy adults after acute ingestion of placebo and Sportlegs.
Time frame: 30 minutes following Sportlegs or Placebo ingestion
Plan to share: No
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This study is completed, as verified in Jul 2024. You cannot join it, but the record below documents what was studied.
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Christopher Bell