"How do the lower extremity biomechanics of a sprint track athlete differ from an endurance athlete during the stance phase at high velocity running?"
University of Wales Institute Cardiff
MetadataShow full item record
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 of coaching techniques used in the training of endurance and sprint athletes. Twelve specifically trained participants (six sprint & six endurance athletes) were recruited for the study. The participants were asked to run at maximum velocity over a 50m distance for three successful trials. A motion analysis system was used to track all kinematic data from anatomical landmarks identified on the body (MTP, heel, ankle, knee, hip and shoulder joint centres) to form an animated segmental linked system-stick image tracking each trial. A force plate was synchronised with the motion analysis system to obtain kinetic data from a single ground contact. Sprint athletes achieved an 18% increase in horizontal velocity compared to endurance athletes. Differences in stride (lengths, frequencies) and kinetic attributes (ground reaction forces, contact times and braking and propulsive characteristics) were evident throughout the stance phase. Significant r-squared relationships were found between contact time and maximum velocity (sprint & endurance); stride length and stride velocity (sprint & endurance); and stride frequency and stride velocity (endurance athletes only). The difference in the sprint athletes and endurance athletes was significantly due to the technique of the foot contact and partly the forces experienced during the landing. As distance runners attempt to sprint, the desired technical changes do not necessarily occur relative to trained sprinting technique. Biomechanical differences are evident in the technique and step characteristics of distance and sprint trained athletes. Both sprinters and distance runners may benefit from biomechanical interventions to improve technique or improve running speed and form near the end of a race. Customised training programmes may therefore be warranted to accommodate the diverse biomechanical responses of uniquely trained athletes.
Showing items related by title, author, subject and abstract.
Comparing lower leg kinematics and coordination in sprint acceleration with and without the constraint of holding a field hockey stick Wdowski, Maximilian (University of Wales, 2011-10-25)The importance of rapid sprint acceleration in team based sport performance has been well established. Sports scientists have created a number of training techniques, such as interval sprint training, to improve the ...
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. ...
A POST ACTIVATION POTENTIATION STUDY: THE ACUTE EFFECT OF A HEAVY RESISTANCE ROMANIAN DEAD LIFT AND A RESISTED SPRINT PULL UPON 30 METRE SPRINT PERFORMANCES IN SPRINTERS Craythorne, Matthew (Cardiff Metropolitan University, 2013)Post activation potentiation (PAP) increases levels of muscle twitch force and synaptic activity through prior voluntary maximal muscle contractions (Folland et al., 2008). Performing muscle contractions with near maximal ...