The Efficacy of the Lactate Threshold: A Sex-Based Comparison

Samantha M Hoffmann; Tina L Skinner; Simon P van Rosendal; Mark A Osborne; Lynne M Emmerton; David G Jenkins

doi:10.1519/JSC.0000000000002654

Back

The Efficacy of the Lactate Threshold: A Sex-Based Comparison

Journal article

Peer reviewed

The Efficacy of the Lactate Threshold: A Sex-Based Comparison

Samantha M Hoffmann, Tina L Skinner, Simon P van Rosendal, Mark A Osborne, Lynne M Emmerton and David G Jenkins

Journal of Strength and Conditioning Research, Vol.34(11), pp.3190-3198

2020

DOI: https://doi.org/10.1519/JSC.0000000000002654

PMID: 29952874

Files and links (1)

url

https://doi.org/10.1519/JSC.0000000000002654View

Published Version

Abstract

second lactate threshold

endurance cycling

lactate steady-state

exercise threshold

time trial

sex differences

Hoffmann, SM, Skinner, TL, van Rosendal, SP, Osborne, MA, Emmerton, LM, and Jenkins, DG. The efficacy of the lactate threshold: A sex-based comparison. J Strength Cond Res XX(X): 000-000, 2018-The second lactate threshold (LT2) has previously been associated with endurance performance; however, comparisons between sexes are lacking regarding its efficacy. The aim of this study was to compare LT2 between men and women, specifically regarding its (a) relationship with endurance performance and (b) capacity to establish training and competition intensities. Competitive male (mean ± SD: age, 27.7 ± 4.7 years; V[Combining Dot Above]O2max, 59.7 ± 5.2 ml·kg·min; n = 10) and female (mean ± SD: age, 27.3 ± 6.2 years; V[Combining Dot Above]O2max, 54.5 ± 5.3 ml·kg·min; n = 12) cyclists and triathletes completed an incremental cycle trial to volitional fatigue (for determination of V[Combining Dot Above]O2max and LT2 via the modified D-max method), a constant load (±5%) exercise trial of 30 minutes at LT2 power output, and a 40-km cycle time trial. The LT2 significantly correlated with 40-km cycling performance in both men (r = -0.69 to -0.77; p < 0.01-0.05) and women (r = -0.63 to -0.75; p < 0.01-0.05). All men sustained LT2 power output for 30 minutes, compared with 82% of women. Despite LT2 reflecting a similar heart rate, V[Combining Dot Above]O2, and [La] to those elicited during a 40-km time trial in both men and women, power output at LT2 was 6% higher (p < 0.05) than mean time trial power output in women, with no significant difference in men. Based on these findings, sex-specific recommendations have been suggested in regard to the use of LT2 for establishing performance potential, prescribing endurance training intensities and setting 40-km performance intensity.

Details

Title: The Efficacy of the Lactate Threshold: A Sex-Based Comparison
Authors: Samantha M Hoffmann (Author) - University of Queensland
Tina L Skinner (Author) - University of Queensland
Simon P van Rosendal (Author) - University of Queensland
Mark A Osborne (Author) - University of Queensland
Lynne M Emmerton (Author) - Curtin University
David G Jenkins (Author) - University of Queensland
Publication details: Journal of Strength and Conditioning Research, Vol.34(11), pp.3190-3198
Publisher: Lippincott Williams & Wilkins
DOI: 10.1519/JSC.0000000000002654
ISSN: 1533-4287
PMID: 29952874
Organisation Unit: School of Health and Behavioural Sciences - Legacy; School of Health and Sport Sciences - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99488705102621
Output Type: Journal article

Metrics

17 Record Views

7 Times Cited - Web of Science

See more details

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Collaboration types: Domestic collaboration
Web Of Science research areas: Sport Sciences

UN Sustainable Development Goals (SDGs)

This output has contributed to the advancement of the following goals:

Source: InCites