Quasi-Isometric Cycling: A Case Study Investigation of a Novel Method to Augment Peak Power Output in Sprint Cycling: Quasi-Isometric Cycling increases Peak Power

Kordi, Mehdi, Evans, Martin and Howatson, Glyn (2020) Quasi-Isometric Cycling: A Case Study Investigation of a Novel Method to Augment Peak Power Output in Sprint Cycling: Quasi-Isometric Cycling increases Peak Power. International Journal of Sports Physiology and Performance. ISSN 1555-0265 (In Press)

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Abstract

Purpose: Peak power output (PPO) is a determinant of sprint cycling performance and can be enhanced by resistance exercise that targets maximum strength. Conventional resistance training is not always suitable for elite cyclists because of chronic spinal issues, therefore alternative methods to improve strength, that concurrently reduces injury risk are welcome. In this case study, quasi-isometric cycling (QIC), a novel task-specific resistance training method designed to improve PPO without the use of transitional resistance training was investigated.

Methods: A highly-trained sprint track cyclist (10.401 s for 200 m) completed a 5-week training block followed by a second 5-week block that replaced conventional resistance training with the novel QIC training method. The replacement training method required the cyclist to maximally drive the crank of a modified cycle ergometer for 5 seconds as it passed though ~100° range (starting at 45° from top dead centre) at a constant angular velocity. Each session consisted of 3 sets of 6 repetitions on each leg. In the saddle (ITS) and out of saddle (OOS) lab PPO was recorded.

Results: Conventional training did not alter sprinting ability, however the intervention improved OOS PPO by 100 W (from 1,751 W to 1,851 W), whilst in ITS PPO increased by 57 W from 1,671W to 1,728W.

Conclusion: QIC increased PPO in a highly-trained, national-level sprint cyclist that could be translated to improvements in performance on the track. Furthermore, QIC provides a simple, but nonetheless effective, alternative for sprint track cyclists who have compromised function to perform traditional strength training.

Item Type: Article
Subjects: C600 Sports Science
Department: Faculties > Health and Life Sciences > Sport, Exercise and Rehabilitation
Depositing User: John Coen
Date Deposited: 14 May 2020 09:26
Last Modified: 15 May 2020 08:00
URI: http://nrl.northumbria.ac.uk/id/eprint/43137

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