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 |
