HSE201 | Exercise Physiology

Running head: Exercise Physiology
HSE201 EXERCISE PHYSIOLOGY
LABORATORY #3 SUBMISSION TEMPLATE: METABOLISM
STUDENT DETAILS:
Name: ID:
REFLECTION
In order to improve your learning and achievement on subsequent practical reports, it is critical
to reflect on the feedback provided. This includes feedback provided through video posts on
CloudDeakin, assessment rubrics, in class discussions with your demonstrator, and peer
feedback within your lab group and other students. It is expected that you review the feedback
from Practical Report One and reflect upon this in conjunction with your report submission and
graded rubric.
Based on this reflection, summarise how you have used the feedback from Practical Report
One to improve when providing answers in this report.
PART 1

Exercise Physiology
DATA RECORDING AND ANALYSIS
TASK 1: RECORD THE RELEVANT DATA IN THE TABLE
Environmental Conditions and Participant Characteristics
Laboratory Values
Barometric/Atmospheric
Pressure (mmHg) 768
Room Temperature (°C) 19.2
Relative Humidity (%) 56.8
Sex Male
Age (years) 22
Height (m) 176.3
Body Mass (kg) 73.5
BMI (kg/m2) 23.6
BMI Classification Normal weight
2

Exercise Physiology
Energy Expenditure During Rest, Exercise and Recovery
PER
IOD
TIME
(min)
̇V O2
(l.min-1) RER ̇VE (l.min-1)
Res
t ----- 0.27 0.947 5.79
Exe
rcise
0.5 0.44 0.937 14.12
1.0 0.93 0.779 19.62
1.5 1.30 0.747 23.20
2.0 1.40 0.799 26.27
2.5 1.43 0.867 29.07
3.0 1.41 0.942 31.13
3.5 1.55 0.924 33.40
4.0 1.26 0.960 29.35
4.5 1.41 0.890 29.61
5.0 1.49 0.933 33.34
Average Steady state
Rec
overy
0.5 1.38 0.902 29.51
1.0 1.27 0.87 26.10
1.5 0.77 0.96 18.91
2.0 0.52 1.02 14.14
2.5 0.43 1.05 12.86
3.0 0.40 1.02 11.98
3.5 0.20 1.04 6.73
4.0 0.26 0.97 8.77
4.5 0.33 0.85 9.54
5.0 0.26 0.84 7.07
TASK 2: CALCULATE ENERGY EXPENDITURE (EE)
3

Exercise Physiology
Locate the average RER for your subject for the steady state period in the table and determine
the calorific equivalent (i.e. kCal expended for each litre of oxygen consumed (i.e. ̇V O2).
Note: 1kcal = 4.182 kJ
Energy Expenditure ( kJ . min−1 ) = ̇V O2 ( l .min−1 ) × calorific equivalent ( kJ .l−1 )
̇V O2 0.27___ l.min-1
Calorific
equivalent 0.947 kCal.l-1
Calorific
equivalent
3.96 kJ.l-1
Energy
expenditure
1.0692 kJ.min-1
TASK 3: CALCULATE GROSS AND NET EFFICIENCY
Convert the workload (W) into energy expenditure (kJ.min-1 - see lab 2 for details) and then
calculate efficiency. See the appendices in the lab manual for a worked example.
Pmech = 74 W converts to
⇒ 74 J.s-1 = 4.44
kJ.min-1
Exercising EE = __4.63
kJ.min-1
Resting EE = 1.0692
kJ.min-1
Gross efficiency
= 95.89 %
Net efficiency
= 124 %
4