During prolonged exercise, energy is primarily derived from oxidative metabolism. For this reason, measures of the functional capacity of the aerobic energy system have gained prominence in the evaluation of endurance athletes.

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Description

During prolonged exercise, energy is primarily derived from oxidative metabolism. For this reason, measures of the functional capacity of the aerobic energy system have gained prominence in the evaluation of endurance athletes. Over 30 years ago, the ventilatory threshold (also sometimes referred to as the ’anaerobic threshold’) was identified as an important predictor of endurance exercise performance. Thus, while maximal oxygen uptake sets the upper limit for aerobic metabolism, the ventilatory threshold is an important determinant of the maximal steady state work rate during prolonged exercise.

 

For this report you are required to:

1.       Graph your results and identify the ventilatory threshold using the V-slope and ventilatory equivalent methods  

2.       Explain the metabolic rational behind the ventilatory threshold including the underlying physiological mechanisms that are thought to account for the deflection point in ventilation

3.       Explain the relationship between the ventilatory and lactate thresholds and why they may appear at similar workloads during an incremental test

 

Marking rubric is attached on the following page


EXSC198 Assignment 2.    Student name                                                              Student ID                                             Total 30 marks (10% weighting)             

Criteria

HD

DI

CR

PA

NN

Graph and identify VT using two methods (5 marks)

Graph,  axis labels, units, legend all correct and VT correctly identified by both methods

Graph,  axis labels, units, legend all correct and VT correctly identified by only one method

Some components of graph incorrect but VT correctly identified by both methods

Some components of graph incorrect and VT only correctly identified by one method

VT not identified correctly by either method or multiple errors on graph

Explain the physiological mechanisms  behind the ventilatory threshold  (10 marks)

Excellent explanation of metabolic rationale and reason for deflection point

Very good explanation of metabolic rationale and reason for deflection point

Good explanation of metabolic rationale and reason for deflection point

Satisfactory explanation of metabolic rationale and reason for deflection point

Poor or Incorrect explanation of metabolic rationale and reason for deflection point

Explain the physiological mechanisms behind the relationship between the lactate and ventilatory thresholds (10 marks)

Excellent explanation of physiological relationship between Ventilatory and Lactate thresholds

Very good explanation of physiological relationship between Ventilatory and Lactate thresholds

Good explanation of physiological relationship between Ventilatory and Lactate thresholds

Satisfactory explanation of physiological relationship between Ventilatory and Lactate thresholds

Poor or incorrect explanation of physiological relationship between Ventilatory and Lactate thresholds

Presentation, writing style and referencing (5 marks)

Excellent presentation, no spelling or grammatical errors, correctly referenced from appropriate sources

Very good presentation, minimal (1-2) spelling or grammatical errors, correctly referenced from appropriate sources

Good presentation.  More than 2 errors in spelling/grammar or referencing

 

Satisfactory presentation. More than 2 errors in spelling/grammar or referencing

 

 

Poor presentation.  Multiple errors in spelling/grammar or referencing

 

 

 


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