Journal article
A Model for Identifying Intensity Zones Above Critical Velocity
Journal of strength and conditioning research, Vol.31(12), pp.3260-3265
12/2017
DOI: 10.1519/JSC.0000000000001769
PMID: 28248750
Abstract
Bergstrom, HC, Housh, TJ, Cochrane-Snyman, KC, Jenkins, NDM, Byrd, MT, Switalla, JR, Schmidt, RJ, and Johnson, GO. A model for identifying intensity zones above critical velocity. J Strength Cond Res 31(12): 3260-3265, 2017-The purpose of this study was to describe the V[Combining Dot Above]O2 responses relative to V[Combining Dot Above]O2peak at 4 different intensities within the severe domain and, based on the V[Combining Dot Above]O2 responses, identify intensity zones above critical velocity (CV). Twelve runners (mean ± SD age = 23.2 ± 3.0 years) performed an incremental treadmill test (ITT) to exhaustion to determine the V[Combining Dot Above]O2peak and velocity associated with V[Combining Dot Above]O2peak (vV[Combining Dot Above]O2peak). Critical velocity was determined from 4 exhaustive, constant velocity, randomly ordered treadmill runs (V1, V2, V3, and V4; V1 = highest, V4 = lowest). The V[Combining Dot Above]O2 responses were recorded during each of the constant velocity runs. Mean differences among V[Combining Dot Above]O2peak values from the ITT and the highest value recorded during the constant velocity runs were examined. The V[Combining Dot Above]O2 values at exhaustion for V1 (3.32 ± 0.10 L·min, p = 0.15) and V2 (3.27 ± 0.91 L·min, p = 0.13) were not significantly different from V[Combining Dot Above]O2peak (3.39 ± 0.96 L·min) from the ITT. The V[Combining Dot Above]O2 values at exhaustion for V3 (3.18 ± 0.88 L·min; p = 0.007) and V4 (3.09 ± 0.86 L·min; p = 0.003), however, were significantly less than the V[Combining Dot Above]O2peak from the ITT. There were intensity-dependent V[Combining Dot Above]O2 responses above CV. Based on these findings, we have hypothesized 3 intensity zones (first severe intensity zone [SIZ1], second severe intensity zone [SIZ2], and extreme intensity zone [EIZ]) within the severe and extreme domains, which are characterized by specific V[Combining Dot Above]O2 responses and may be used to design programs that maximize aerobic performance adaptations.
Details
- Title: Subtitle
- A Model for Identifying Intensity Zones Above Critical Velocity
- Creators
- Haley C Bergstrom - University of KentuckyTerry J Housh - University of Nebraska–LincolnKristen C Cochrane-Snyman - California State Polytechnic UniversityNathaniel D M Jenkins - Oklahoma State UniversityM Travis Byrd - University of KentuckyJonathan R Switalla - University of KentuckyRichard J Schmidt - University of Nebraska–LincolnGlen O Johnson - University of Nebraska–Lincoln
- Resource Type
- Journal article
- Publication Details
- Journal of strength and conditioning research, Vol.31(12), pp.3260-3265
- DOI
- 10.1519/JSC.0000000000001769
- PMID
- 28248750
- NLM abbreviation
- J Strength Cond Res
- ISSN
- 1064-8011
- eISSN
- 1533-4287
- Language
- English
- Date published
- 12/2017
- Academic Unit
- Center for Social Science Innovation; Injury Prevention Research Center; Health, Sport, and Human Physiology
- Record Identifier
- 9984259648902771
Metrics
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