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15. Individual patterns of response to traditional and modified sprint interval training

Author

Brendon J. Gurd, Seth F McCarthy, Kyle T Schulhauser, Daniel Grisebach, Jacob T. Bonafiglia, Hashim Islam, Tom J. Hazell, Greg L. McKie, Curtis Todd, and Logan K Townsend

Subjects
Male, medicine.medical_specialty, 030209 endocrinology & metabolism, Physical Therapy, Sports Therapy and Rehabilitation, Athletic Performance, High-Intensity Interval Training, Interval training, Running, 03 medical and health sciences, Young Adult, 0302 clinical medicine, Time trial, Oxygen Consumption, Sex Factors, Medicine, Humans, Orthopedics and Sports Medicine, business.industry, Pulmonary Gas Exchange, Incidence (epidemiology), 030229 sport sciences, Sprint, Physical therapy, Classification methods, Female, Anaerobic capacity, business, High-intensity interval training
Abstract

We compared the incidence of response between a traditional sprint interval training (SIT) protocol (30:240: 4-6 x 30-s, 240-s recovery) and 2 modified SIT protocols (15:120: 8-12 x 15-s, 120-s recovery; 5:40: 24-36 x 5-s, 40-s recovery) over 4 weeks of training in 84 recreationally active individuals (n = 23 per SIT group/15 control participants). Pre- and post-testing measures included V. O2max, 5-km time trial, and anaerobic capacity. Responders were classified using 2x typical error and seven other approaches to explore the impact of classification method on response rates. There was no difference in the proportion (2x typical error) of V.O2max responders across groups (30:240: 64%; 15:120: 39%; 5:40: 41%; CTRL: 33%; P= 0.190). The 30:240 group had more responders (P 0.112). Approaches with the largest response thresholds resulted in the fewest responders highlighting response rates are influenced by the method used. Additionally, we observed intra-individual differences in responsiveness across outcomes. This is the first study to empirically test the difference in the incidence of response and demonstrate individual patterns of response across different SIT protocols.

Published
2020

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