Low volume short duration high-intensity interval training and repeated sprint ability in Gaelic football players
Kelly, David (2014) Low volume short duration high-intensity interval training and repeated sprint ability in Gaelic football players. PhD thesis, Dublin City University.
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Gaelic Football is the most popular sport in Ireland and is characterized by irregular changes of pace and high-intensity efforts interspersed with periods of light to moderate intensity activity. Speed, power and aerobic capacity are essential fitness components for optimal performance during match play. A high level of aerobic conditioning is required to generate and maintain power output during repeated high intensity activities.
Study 1: Anthropometric, physiological, metabolic and endurance exercise performance were evaluated in club level Gaelic football players (n=15) in response to 2 weeks of low volume short duration high-intensity interval training (LS-HIT) or high volume endurance training (HVET). Six sessions of LS-HIT and HVET induced similar improvements in endurance exercise performance. V̇O2max was increased significantly in the LS-HIT group only. There was no change in running economy or vV̇O2max following LS-HIT or HVET.
Study 2: This study compared the effect of 6 weeks of LS-HIT and HVET on anthropometric, physiological, metabolic and performance indices in club level Gaelic football players (n=25). Both groups had a similar significant increase in V̇O2max, vV̇O2max, Wingate anaerobic performance and endurance exercise performance. Running speed and jump performance did not change following LS-HIT and decreased significantly in response to HVET.
Study 3: The construct validity and determinants of repeated sprint ability (RSA) tests were evaluated in club and county level Gaelic football players (n=30). The RSA test involving 8 maximal 30 m sprints on a 22.5 sec cycle demonstrated construct validity. The ability to perform repeated sprints has a greater relation to running speed and power and blood lactate levels than indices of endurance performance.
Conclusion: LS-HIT is a time efficient strategy to induce aerobic adaptations normally associated with traditional HVET and maintain indices of speed and power in club level Gaelic football players. An RSA test involving 8 x 30 m sprints on a 22.5 sec cycle was superior in county than club level Gaelic football players.
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