The Kinematic and Kinetic Development of Sprinting and Countermovement Jump Performance in Boys
Gittoes, Marianne J.R.
MetadataDangos cofnod eitem llawn
Background: The aim of the study was to examine the kinematics and kinetics of sprint running and countermovement jump performance between the ages of 8 to 9, and 11 to 12 year old boys in order to understand the developmental plateau in performance. Methods: 18 physically active boys (Age: 10.1±1.6), in an under 9 years old (U9) and an under 12 years old (U12) group performed 15 m sprints and countermovement jumps. A 3D motion analysis system (200 Hz), synchronized with four force platforms (1000Hz), was used to collect kinematic and kinetic data during the first stance phase of the sprint run and the countermovement jump. Results: The U12 group had a significantly greater height (U9: 1.364±0.064 m; U12: 1.548±0.046 mm), larger mass (U9: 30.9±3.5 kg; U12: 43.9±5.0 kg), superior sprint performance over 0-5 m (U9: 1.31±0.007 seconds; U12: 1.23±0.009 seconds) and 0-15 m (U9: 3.20±0.17 seconds; U12: 3.01±0.20 seconds), and increased jump height (U9: 0.17±0.06 m; U12: 0.24±0.10 m) than the under 9 group. During the first stance phase of the sprint the U12 group had a significantly greater vertical (U9: 0.22±0.02 BW/s; U12: 0.25±0.03 BW.s) and horizontal impulse (U9: 0.07±0.02 BW/s; U12: 0.09±0.03 BW.s) during than the U9 group. When performing a countermovement jump the U12 group had a significantly greater mean average eccentric force (U9: 407.3±55.0 N; U12: 542.2±65.1 N) and mean average concentric force (U9: 495.8±41.3 N; U12: 684.0±62.1 N). Joint kinematics for the countermovement jump were significantly different between age groups for the ankle range of motion (U9: 80.6±17.4 º; U12: 64.1±9 º) and knee minimum joint angle (U9: -5.7±3.9 º; U12: 0.0±4.4 º). Conclusion: The study demonstrates for the first time that the development of physically active boys between the ages of 8-9 to 11-12 years increased the ground reaction forces and impulses during sprint running and countermovement jumps, but that sprint running technique had not developed during this period. Furthermore, countermovement jump technique was still emerging at the age of 8-9 years old. Practitioners need to implement on-going fine-grained sprint running and CMJ technique sessions to ensure that the increased force producing capabilities that come with age are appropriately utilized.
Frontiers in Bioengineering and Biotechnology;
Wdowski MM, Noon M, Mundy PD, Gittoes MJR and Duncan MJ (2020) 'The Kinematic and Kinetic Development of Sprinting and Countermovement Jump Performance in Boys', Frontiers in Bioengineering and Biotechnology, 8:547075. doi: 10.3389/fbioe.2020.547075
Dynodwr Gwrthrych Digidol (DOI)https://doi.org/10.3389/fbioe.2020.547075
Article published in Frontiers in Bioengineering and Biotechnology available open access at https://doi.org/10.3389/fbioe.2020.547075
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
- Sport Research Groups 
Yn dangos eitemau sy’n perthyn drwy deitl, awdur, pwnc a chrynodeb.
Condliffe, Robert (Cardiff Metropolitan University, 2018)It is a common belief in bobsleigh that the push-start is a vital aspect of successful performance. Therefore, British Bobsleigh places a heavy emphasis on the use of field-based performance testing to assist with ...
Short-Term Effects of “Composite” Training on Strength, Jump, and Sprint Performance in Hurling Players Byrne, Paul J.; Moody, Jeremy A.; Cooper, Stephen-Mark; Farrell, Eoin; Kinsella, Sharon (National Strength & Conditioning Association, 2020-09-25)The purpose of this study was to compare the short-term effects of “composite” training to sprint training on strength, jump, and sprint acceleration performance in hurling players. A randomized counterbalanced group design ...
Sprint-Specific Training in Youth: Backward Running vs. Forward Running Training on Speed and Power Measures in Adolescent Male Athletes Uthoff, Aaron; Oliver, Jon; Cronin, John; Harrison, Craig; Winwood, Paul (Lippincott, Williams & Wilkins, 2018-10-24)This study compared the effects of 2 sprint-specific training programs against the natural development of speed, power, and stiffness in a group of adolescent male athletes. Forty-three male adolescents (aged 13–15 years) ...