The acute effects of a loaded sled pull on sprint performance: An individual-based analysis
Cardiff Metropolitan University
MetadataShow full item record
The purpose of this study was to conduct an individual-based analysis of the acute response to a loaded sled pull on the initial acceleration phase during sprinting. Four university level sprinters (age; 20.5 ± 0.6, height; 180.5 ± 4.6, Mass; 75.8 ± 8.1, 100m personal best; 11.4 ± 0.1) completed five control trials and five different loaded sled pulls over three weeks. Sprint time was recorded at both 10 and 20m and ground reaction force (GRF) data was recorded from the first step following block clearance. Each loaded sled pull was performed for 10s and after a 6 minute recovery, a 20m sprint was performed. The loads used were; the unloaded sled (12.5kg), 25%, 50%, 75% and 100% of each participants body mass. The typical error of estimate from the five control trials were calculated for each participant for each variable of interest, and this value was deemed as the smallest worthwhile change in performance (SWC). GRF data were subsequently analysed from any trails where improvements in sprint time were > SWC. All participants had at least one sled resistance which resulted in a worthwhile change in sprint performance, representing improvements in sprint times of 0.9 – 1.6%. However, the load at which this occurred was highly individualised, ranging from the unloaded sled to 100% loading. Analysis of the GRF data revealed large variation in how each participants force profile was augmented following the loaded sled pull, especially in the braking and propulsive phase of the ground contact. However, rate of force development (RFD) was increased by all participants. Loaded sled pulling elicited a PAP response resulting in worthwhile improvements in sprint performance for all participants. However, the load at which this occurred and kinetic changes underpinning improved performance were highly individualised, highlighting the need for individualised PAP training programmes.
Showing items related by title, author, subject and abstract.
Burge, James (University of Wales Institute Cardiff, 2012)The purpose of this study was to identify and investigate the decisive contributing factor(s) to repeat sprint ability, a key component in basketball. Repeat sprint ability (reported as fastest sprint time, mean sprint ...
Does aerobic fitness or repeated sprint ability fitness influence contribution to play, in female university hockey players? Are the fitness tests used valid methods of assessment? Bickerstaff, Caroline (University of Wales Institute Cardiff, 2008)The aim of the study was to examine whether aerobic fitness or repeated sprint ability was related to match performance. During the competitive season, twelve UWIC university hockey players, from within the three squads, ...
Walters, Dafydd (University of Wales Institute Cardiff, 2012)The focus of this study aims to examine the effects of pre-event massage on sprint performance in female athletes. Much of the current research associated with massage and sprint performance hold methodological flaws. The ...