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17.09.2016 | Original Article | Ausgabe 3/2016

Sport Sciences for Health 3/2016

Characteristics and effect of 8-week soccer training on lactate minimum speed

Zeitschrift:
Sport Sciences for Health > Ausgabe 3/2016
Autoren:
E. Z. Campos, A. M. Zagatto, F. Y. Nakamura, P. Balikian Junior, J. Gerosa-Neto, G. S. Navarro, M. Papoti

Abstract

Purpose

This study aimed to (1) characterize 8 weeks of specific soccer training according to heart rate (HR) zones and speed zones, and (2) verify the effects of 8 weeks of specific soccer training on lactate minimum speed (LMS), and the respective HR (HRLMS) of professional soccer players.

Methods

Fourteen professional soccer players (23 [3] years old, 78.4 [7.0] kg, and 6.9 [2.4]  % body fat; second national division) underwent a lactate minimum test at two different moments, before and after 8 weeks of specific training. The training was characterized according to time spent at each heart rate zone, and in different speed zones. The comparison between LMS and HRLMS was performed using the Wilcoxon test. An effect-size qualitative analysis was also performed.

Results

The training was performed predominantly in zone 1 (<80 % of maximal HR). The time spent at velocities below mean LMS was predominant. The LMS (pre: 10.9 [0.8] km h−1; post: 11.8 [0.7] km h−1), and its corresponding heart rate (pre: 161 [7.0] bpm; post: 163 [9.0] bpm) did not differ significantly between pre and post-training. However, the effect size analysis showed a moderate effect on LMS.

Conclusion

Eight weeks of soccer training slightly increased LMS, without changing HRMLS. Since LMS heart rate does not change with training, it can be used as a boundary of soccer training intensity (i.e., above or below anaerobic threshold).

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