Lab 5 - Graded Exercise Testing Nutr 486 Sydney Reiners 1...

Graded Exercise Testing
Nutr 486
Sydney Reiners
April 19, 2015
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Contents
Introduction ...................................................................................................................................................... 3
Objectives ......................................................................................................................................................... 3
Methods/Procedures ........................................................................................................................................ 4
Results ............................................................................................................................................................... 5
Table 1 Resting Data for Males ......................................................................................................................... 5
Table 2 Resting Data for Females ..................................................................................................................... 5
Table 3a Treadmill VO2 .................................................................................................................................... 5
Table 3b Treadmill HR ....................................................................................................................................... 5
Table 3c Treadmill Energy Expenditure ............................................................................................................ 6
Table 4 Cycling Data .......................................................................................................................................... 6
Table 5 VO2 Comparison .................................................................................................................................. 6
Table 6 Anaerobic Threshold ............................................................................................................................ 6
Figure 1 Mean VO2 vs. Mean HR ..................................................................................................................... 7
Figure 2 Mean Energy Expenditure vs HR ........................................................................................................ 8
Figure 3 Mean VO2 vs. Speed .......................................................................................................................... 9
Figure 4 RPE vs. HR ......................................................................................................................................... 10
Figure 5 VCO2 vs. VO2 .................................................................................................................................... 10
Figure 6 MB and ES VE btps vs. HR ................................................................................................................ 11
Figure 7 RPE vs. HR ......................................................................................................................................... 11
Figure 8 SBP, MBP, and DBP vs. Time ............................................................................................................. 12
Figure 9 TPR vs. Time ...................................................................................................................................... 12
Figure 10 RPP vs. Time ................................................................................................................................... 13
Discussion ....................................................................................................................................................... 14
Conclusion ...................................................................................................................................................... 17
References ...................................................................................................................................................... 18
Exercise Presription ........................................................................................................................................ 19
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Introduction
Graded exercise testing (GXT) evaluates cardiac function under conditions that exceed resting
requirements in defined, progressive increments to increase myocardial workload. Whether for maximal
or submaximal, graded exercise testing is a safe procedure when subject screening and testing guidelines
are adhered to. The GXT also objectives the functional capacity of patients with known disease and
evaluates progress following different interventions (i.e. surgery or therapeutic). This lab used graded
exercise testing and the measurement of oxygen uptake for many purposes. They were used to diagnose
coronary artery disease, measure energy in various activities, determine the relative contribution of fat
and carbohydrates as energy sources, and measured work efficiency. They were also used to assess
maximal aerobic power, determine progress made in exercise training, and to write exercise
prescriptions for athletes and non-athletes.
Objectives
After completing this lab, students will be able to:
1. Predict VO
2
max using regression equations, heart rate/VO
2
and workload plots, and the
University of Houston Non-Exercising (NEx) questionnaire.
2. Accurately administer tests of cardiorespiratory fitness using the leg cycle ergometer, treadmill,
step-test, and the 1.5 mile run for time.
3. Accurately determine resting and exercise heart rates and blood pressures.
4. Calibrate and operate the Metabolic Cart.
5. Be able to describe and calculate ATPS, BTPS, and STPD values given appropriate data.
6. Accurately calculate all exercise physiology variables listed in “Exercise Physiology Concepts”
insert located in the GXT lab section.
7. Accurately calculate and describe the physiological mechanisms of all variables listed on the GXT
Summary Data Form.
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