Criterion and longitudinal validity of a fixed-distance incremental running test for the determination of lactate thresholds in field setting
Deutscher übersetzter Titel: | Kriteriums- und Längsschnittvalidität eines Lauftests über eine festgelegte Distanz und mit ansteigender Belastung zur Bestimmung der Laktatschwellen in einem Feld-Setting |
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Autor: | La Torre, Antonio; Fiorella, Pierluigi; Santos, Tony M.; Faina, Marcello; Mauri, Clara; Impellizeri, Franco M. |
Erschienen in: | Journal of strength and conditioning research |
Veröffentlicht: | 26 (2012), 1, S. 146-151, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1064-8011, 1533-4287 |
DOI: | 10.1519/JSC.0b013e31821bc313 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201203001636 |
Quelle: | BISp |
Abstract
The aim of this study was to examine the criterion validity of 2 lactate thresholds (LTs, intensity corresponding to 1 mmol•L-1 above baseline; onset of blood lactate accumulation, intensity at 4 mmol•L-1) determined with a fixed-distance incremental field test by assessing their correlation with those obtained using a traditional fixed-time laboratory protocol. A second aim was to verify the longitudinal validity by examining the relationships between the changes in LTs obtained with the 2 protocols. To determine the LTs, 12 well-trained male middle and long distance amateur and competitive runners training from 4 to 7 d•wk-1 (age 25 [5] years, body mass 66 [5] kg, estimated VO2max 58.6 [4.9] ml•min-1•kg-1, SD in parentheses) performed in 2 separate sessions an incremental running test on the field starting at 12 km•h-1 and increasing the speed by 1 km•h-1 every 1,200 m (FixD test) and an incremental treadmill test in the laboratory starting at 12 km•h-1 and increasing the speed by 1 km•h-1 every 6 minutes. The 2 tests were repeated after 6-12 weeks. A nearly perfect relationship was found between the running speeds at LTs determined with the 2 protocols (r = 0.95 [CI95% 0.83-0.99]; p < 0.001). The correlations between longitudinal changes in LTs were very large (0.78 [0.32-0.95; p = 0.006]). The heart rate corresponding to the LTs were not significantly different. This study showed the criterion and longitudinal validity of LTs determined with a protocol consisting of fixed-distance intervals performed in field setting. Verf.-Referat