Next Article in Journal
Comparison of High and Low Responders to a Cross-Country Skiing Talent Transfer Program: A Coach’s Perspective
Previous Article in Journal
Racing Demands of Off-Road Triathlon: A Case Study of a National Champion Masters Triathlete
Article

Resisted Sled Sprint Kinematics: The Acute Effect of Load and Sporting Population

1
Department of Sport and Health Sciences, Athlone Institute of Technology, N37 HD68 Athlone, Ireland
2
SHE Research Group, Athlone Institute of Technology, N37 HD68 Athlone, Ireland
3
Department of Physical Education and Sport Sciences, University of Limerick, V94 T9PX Limerick, Ireland
4
Health Research Institute, University of Limerick, V94 T9PX Limerick, Ireland
*
Author to whom correspondence should be addressed.
Academic Editor: Richard B. Kreider
Sports 2021, 9(10), 137; https://doi.org/10.3390/sports9100137
Received: 12 June 2021 / Revised: 6 August 2021 / Accepted: 27 September 2021 / Published: 30 September 2021
In this study, we assessed the acute kinematic effects of different sled load conditions (unloaded and at 10%, 20%, 30% decrement from maximum velocity (Vdec)) in different sporting populations. It is well-known that an athlete’s kinematics change with increasing sled load. However, to our knowledge, the relationship between the different loads in resisted sled sprinting (RSS) and kinematic characteristics is unknown. Thirty-three athletes (sprinters n = 10; team sport athletes n = 23) performed a familiarization session (day 1), and 12 sprints at different loads (day 2) over a distance of 40 m. Sprint time and average velocity were measured. Sagittal-plane high-speed video data was recorded for early acceleration and maximum velocity phase and joint angles computed. Loading introduced significant changes to hip, knee, ankle, and trunk angle for touch-down and toe-off for the acceleration and maximum velocity phase (p < 0.05). Knee, hip, and ankle angles became more flexed with increasing load for all groups and trunk lean increased linearly with increasing loading conditions. The results of this study provide coaches with important information that may influence how RSS is employed as a training tool to improve sprint performance for acceleration and maximal velocity running and that prescription may not change based on sporting population, as there were only minimal differences observed between groups. The trunk lean increase was related to the heavy loads and appeared to prevent athletes to reach mechanics that were truly reflective of maximum velocity sprinting. Lighter loads seem to be more adequate to not provoke changes in maxV kinematics. However, heavy loading extended the distance over which it is possible to train acceleration. View Full-Text
Keywords: resisted sprints; sled sprint; kinematics; gait; team sport; sprint athlete resisted sprints; sled sprint; kinematics; gait; team sport; sprint athlete
Show Figures

Figure 1

MDPI and ACS Style

Osterwald, K.M.; Kelly, D.T.; Comyns, T.M.; Catháin, C.Ó. Resisted Sled Sprint Kinematics: The Acute Effect of Load and Sporting Population. Sports 2021, 9, 137. https://doi.org/10.3390/sports9100137

AMA Style

Osterwald KM, Kelly DT, Comyns TM, Catháin CÓ. Resisted Sled Sprint Kinematics: The Acute Effect of Load and Sporting Population. Sports. 2021; 9(10):137. https://doi.org/10.3390/sports9100137

Chicago/Turabian Style

Osterwald, Katja M., David T. Kelly, Thomas M. Comyns, and Ciarán Ó. Catháin. 2021. "Resisted Sled Sprint Kinematics: The Acute Effect of Load and Sporting Population" Sports 9, no. 10: 137. https://doi.org/10.3390/sports9100137

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop