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Int J Sports Med 2021; 42(04): 350-356
DOI: 10.1055/a-1273-8564
Training & Testing

Mechanical and Metabolic Responses during High-intensity Training in Elite 800-m Runners

Beatriz Bachero-Mena
1   Department of Physical Education and Sports, University of Seville, Sevilla
,
Juan José González-Badillo
2   Faculty of Sport, Pablo de Olavide University, Seville
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Abstract

The purpose of this study was to describe the mechanical and metabolic responses of a typical high-intensity training session in high-level 800-m athletes. Nine male high-level 800-m athletes (personal best 1:43–1:56 min:ss) performed a typical high-intensity interval training session consisting of 5×200 m with 4 min rest. Countermovement jump and blood lactate were measured at rest and after each running bout. Running times, ground contact times, and stride length were also measured. Running times and lactate (p<0.01) progressively increased from the first to the last running bout. Jump height (p<0.01) and stride length (p<0.05) progressively decreased from the first running bout to the last. A significant negative relationship (p<0.001; r =−0.83) was found between the individual values of jumping height and blood lactate concentration; and a significant positive relationship (p<0.01; r=0.67) was observed between the time in the 200 m and the contact times. In conclusion, the results demonstrated that the typical training session performed by 800-m athletes produced a high level of fatigue as evidenced by significant alterations in the mechanical and metabolic response. The impairments observed in the mechanical and metabolic parameters may indirectly reflect a state of energy deficit of the muscle contractile machinery and a reduction of the force-generating capacity.

Key words

interval-training - performance - lactate - countermovement jump - middledistance running


Publication History

Received: 05 June 2020

Accepted: 21 September 2020

Article published online:
19 October 2020

© 2021. Thieme. All rights reserved.

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