Int J Sports Med 2010; 31(8): 567-571
DOI: 10.1055/s-0030-1254136
Training & Testing

© Georg Thieme Verlag KG Stuttgart · New York

Dose-Response Relationship Between Interval Training Frequency and Magnitude of Improvement in Lactate Threshold

L. Dalleck1 , T. T. Bushman2 , R. D. Crain2 , M. M. Gajda2 , E. M. Koger2 , L. A. Derksen2
  • 1Minnesota State University, Mankato, Human Performance, Mankato, United States
  • 2University of Wisconsin-Eau Claire, Kinesiology, United States
Further Information

Publication History

accepted after revision April 27, 2010

Publication Date:
09 June 2010 (online)


The purpose of this study was to determine if interval training at 110–120% of peak power output one and two days/wk in addition to habitual training would elicit improvements in lactate threshold (LT) in a dose response manner. Twenty physically active individuals completed this study: age – 21.1±1.3 yr, height – 172.1±7.4 cm, body mass – 68.4±9.1 kg, VO2max – 45.3±5.2 mL/kg/min; and were randomly assigned into two separate 6 wk training groups – either 1 day/wk interval training or 2 days/wk interval training at 110–120% of peak workload (from an incremental exercise test) on a cycle ergometer. After 6 wk, LT (% VO2max) increased significantly (p<0.05) in both 1 day/wk (4.3±3.2%) and 2 days/wk (8.2±2.6%) groups. A two-factor mixed ANOVA identified a significant interaction between exercise frequency and LT (%VO2max) values (p<0.05) indicating that LT responded differently to 1 day/wk and 2 days/wk of interval training. Findings from the present study show high-intensity, interval training to be a successful strategy for modifying this important metabolic threshold. Moreover, results suggest that there is a dose-response relationship between frequency of interval training and the magnitude of LT improvement.



Dr. Lance Dalleck

Minnesota State University

Mankato, Human Performance

1400 Highland Center

56001 Mankato

United States

Phone: +1/507/389 6715

Fax: +1/507/389 4084