Glucose Response after a Ten-Week Training in Swimming

Y. Sengoku; K. Nakamura; T. Takeda; Y. Nabekura; S. Tsubakimoto

doi:10.1055/s-0031-1279778

International Journal of Sports Medicine, Table of Contents

Int J Sports Med 2011; 32(11): 835-838
DOI: 10.1055/s-0031-1279778

Training & Testing

Georg Thieme Verlag KG Stuttgart · New York

Glucose Response after a Ten-Week Training in Swimming

Y. Sengoku

¹Comprehensive Human Sciences, University of Tsukuba, , Japan

,

K. Nakamura

¹Comprehensive Human Sciences, University of Tsukuba, , Japan

,

T. Takeda

¹Comprehensive Human Sciences, University of Tsukuba, , Japan

,

Y. Nabekura

¹Comprehensive Human Sciences, University of Tsukuba, , Japan

,

S. Tsubakimoto

¹Comprehensive Human Sciences, University of Tsukuba, , Japan

› Author Affiliations

Abstract

The present study investigated the difference in blood glucose concentration (Glu) response during an incremental swimming test before and after a ten-week training period and verified whether blood glucose threshold (GT) could be determined in competitive swimmers. 7 elite male university swimmers participated in this study. 2 incremental swimming tests were conducted in a swimming flume before and after a ten-week training period. Blood lactate concentration (Bla) and Glu were measured after each swimming step, and the velocities of the lactate threshold (VLT) and glucose threshold (VGT) were analyzed. VLT increased significantly after training (1.21±0.06 m·s⁻¹ pre-training, 1.31±0.10 m·s⁻¹ post-training, p<0.05), while Glu did not increase at the higher swimming intensity steps. GT was not determined at each trial. Our results show that lactate threshold (LT) improved significantly after the ten-week training period, while the Glu response during incremental swimming tests did not change. Therefore, GT could not be determined in elite competitive swimmers before and after training.

Key words

endurance capacity - anaerobic threshold - metabolic response

Full Text

References

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