Sled-Pull Load-Velocity Profiling and Implications for Sprint Training Prescription in Young Male Athletes
Lloyd, Rhodri S.
MetadataShow full item record
The purpose of this study was to examine the usefulness of individual load–velocity profiles and the between-athlete variation using the decrement in maximal velocity (Vdec) approach to prescribe training loads in resisted sled pulling in young athletes. Seventy high school, team sport, male athletes (age 16.7 ± 0.8 years) were recruited for the study. All participants performed one un-resisted and four resisted sled-pull sprints with incremental resistance of 20% BM. Maximal velocity was measured with a radar gun during each sprint and the load–velocity relationship established for each participant. A subset of 15 participants was used to examine the reliability of sled pulling on three separate occasions. For all individual participants, the load–velocity relationship was highly linear (r > 0.95). The slope of the load–velocity relationship was found to be reliable (coefficient of variation (CV) = 3.1%), with the loads that caused a decrement in velocity of 10, 25, 50, and 75% also found to be reliable (CVs = <5%). However, there was a large between-participant variation (95% confidence intervals (CIs)) in the load that caused a given Vdec, with loads of 14–21% body mass (% BM) causing a Vdec of 10%, 36–53% BM causing a Vdec of 25%, 71–107% BM causing a Vdec of 50%, and 107–160% BM causing a Vdec of 75%. The Vdec method can be reliably used to prescribe sled-pulling loads in young athletes, but practitioners should be aware that the load required to cause a given Vdec is highly individualized.
Cahill, M.J., Oliver, J.L., Cronin, J.B., Clark, K.P., Cross, M.R. and Lloyd, R.S. (2019) 'Sled-Pull Load-Velocity Profiling and Implications for Sprint Training Prescription in Young Male Athletes', Sports, 7(5), p.119. DOI: 10.3390/sports7050119.
Article published in Sports on 20 May 2019, available open access at: https://doi.org/10.3390/sports7050119.
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
- Sport Research Groups 
Showing items related by title, author, subject and abstract.
"How do the lower extremity biomechanics of a sprint track athlete differ from an endurance athlete during the stance phase at high velocity running?" peterson, Jessica (University of Wales Institute Cardiff, 2012)The aim of the study was to examine the lower extremity biomechanics of the stance phase of sprint and endurance athletes, performing maximum velocity sprint runs. The overall purpose of the study was to assist the development ...
Linington, Rhiannon (Cardiff Metropolitan University, 2013)Following reports of bias against athletes competing in the inner two lanes of an indoor athletics track, the IAAF made the decision to no longer class the 200 meters as a championship distance. The aim of this study was ...
What is the relationship between knee height in the leg cycle and force production during the stance phase whilst running at maximal velocity? Kinsey, Luke (Cardiff Metropolitan University, 2014)The main aim of this study was to investigate the relationship between the maximum height of the knee during the leg cycle and the peak vertical ground reaction force from the forthcoming stance phase of the same leg. ...