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Name Description Used on site
Critical power Critical power (CP) is a concept based on the hyperbolic relationship between power output and the time that the power output can be sustained. The relationship can be described based on the results of a series of timed all-out predicting trials.
Fatigue-Curve This calculation is based on the relation of the neural imput to the muscle-cells from 0% to 100%.
This creates an increase in [Ca]2+ making the muscle contract. Due to the state of the 3 types of fatigue, a different amount of power in (VO2tot) can be produced.
  1. No Fatigue: stands for the VO2tot when there is no warming up
  2. Fatigue 1: stands for the VO2tot if we look at the metabolic state in the muscle.
  3. Fatigue 1 and 2: Also takes in account the amount of KHD in the muscle making the VO2tot drop.
  4. Fatigue 1, 2 and 3: Also takes in account the cardiovascular effects that drop the VO2tot.
Metabolism Metabolism is the sum of all chemical reactions that occur within each cell of a living organism and that provide energy for vital processes and for synthesizing new organic material. It includes all the processes by which the body converts food into energy and uses this energy to sustain life, grow, and function.
Model A model is a representation of something, often on a smaller scale than the original. It can also refer to a simplified description or system used to assist calculations and predictions. A model can also be an example for imitation or emulation.
Performance Indicators Performance indicators are variables that are used to determine the limitations of an individual's performance. In the TREFf model, we use 7 performance indicators to calculate these limitations.
Tmax This is the ability to accelerate.
TREFF Trainings Effect
Vmax This is the maximum power.
Wingate test The Wingate Test is a fitness test that measures an individual's anaerobic capacity and power outputs. It was developed in the 1970s at the Wingate Institute in Israel and is commonly performed on a cycle ergometer. The test requires the participant to cycle at maximal effort for 30 seconds.
Autors Name Description Taggs Link
Alejandro Hernández-Belmonte Ángel Buendía-Romero Alejandro Martínez-Cava, JavierCourel-Ibáñez, Ricardo Mora-Rodríguez and Jesú G. Pallarés Wingate Test, When Time and Overdue Fatigue Matter: Validity and Sensitivity of Two Time-Shortened Versions Appl. Sci. 2020, 10(22), 8002; More Info
GoldenCheetah GoldenCheetah A software example of an alternative/improvement of the critical power concept. More Info
H. Geijsel, H. Hlobil, W. van Mechelen Conditie tests An book that describes some basic test exercise tests (Dutch) from EVRO Haarlem ISBN 90-9009153 More Info
K Hottenrott,A Pfützner Alles unter Kontrolle. Ausdauertraining. Meyer + Meyer More Info
Mark Burnley All-Out Physiology A YouTube channel about exercise physiology More Info
R W Pettitt 1, N Jamnick, I E Clark 3-min all-out exercise test for running Int J Sports Med.2012,Jun;33(6): 426-31 More Info
Robert Rozenberg Hoe score ik het beste op een Wingate test? An article about the wingate test (Dutch) More Info
WKO Power Duration Model V2 A software example of an alternative/improvement of the critical power concept. More Info
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