Iso-duration determination of D´ and CS under laboratory and field conditions

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Triska, Christoph ; Karsten, Bettina ; Nimmerichter, Alfred ; Tschan, Harrald (2017)

Whilst Critical Speed (CS) has been successfully translated from the laboratory into the field, this translation is still outstanding for the related maximum running distance (D´). Using iso-duration exhaustive laboratory and field runs, this study investigated the potential interchangeable use of both parameters, D´ and CS. After an incremental exercise test, ten male participants (age: 24.9±2.1 yrs; height: 180.8±5.8 cm; body mass: 75.3±8.6 kg; V ̇O2peak 52.9±3.1 mL∙min-1∙kg-1) performed three time-to-exhaustion runs on a treadmill followed by three exhaustive time-trial runs on a 400 m athletics outdoor track. Field time-trial durations were matched to their respective laboratory time-to-exhaustion runs. D´ and CS were calculated using the inverse-time model (speed=D´/t+CS). Laboratory and field values of D´ and CS were not significantly different (221±7 m vs. 225±72 m; P = 0.73 and 3.75±0.36 m∙s-1 vs. 3.77±0.35 m∙s-1, P = 0.68), and they were significantly correlated (r = 0.86 and 0.94). The 95% LoA were ±75.5m and ±0.24 m∙s-1 for D´ and CS, respectively. Applying iso-durations provides non-significant differences for D´ and CS and a significant correlation between conditions. This novel translation testing method can consequently be recommended to coaches and practitioners, however a questionable level of agreement indicates to use D´ with caution.
  • References (1)

    Thomas K, Stone M, St Clair Gibson A, Thompson K, Ansley L. The effect of an evenpacing strategy on exercise tolerance in well-trained cyclists. Eur J Appl Physiol 2013; 113: 3001-3010 Triska C, Tschan H, Tazreiter G, Nimmerichter A. Critical power in laboratory and field conditions using single-visit maximal effort trials. Int J Sports Med 2015; 36: 1063-1068 Vandewalle H, Vautier JF, Kachouri M, Lechevalier JM, Monod H. Work-exhaustion time relationships and the critical power concept. A critical review. J Sports Med Phys Fitness 1997; 37: 89-102 Vanhatalo A, Doust JH, Burnley M. Determination of critical power using a 3-min allout cycling test. Med Sci Sports Exerc 2007; 39: 548-555 Vanhatalo A, Fulford J, DiMenna FJ, Jones AM. Influence of hyperoxia on muscle metabolic responses and the power-duration relationship during severe-intensity exercise in humans: a 31P magnetic resonance spectroscopy study. Exp Physiol 2010; 95: 528-540

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