Cross-validation of the recumbent stepper submaximal exercise test to predict peak oxygen uptake in older adults
Ashley A Herda1, Angela A Lentz, Anna E Mattlage
1A.A. Herda, PhD, Department of Health, Sport and Exercise Sciences, University of Kansas, Overland Park, Kansas.
Background:
Submaximal exercise testing can have a greater application in clinical settings because peak exercise testing is generally not available. In previous work, a prediction equation was developed to estimate peak oxygen consumption (Vo2) using a total body recumbent stepper (TBRS) and the Young Men's Christian Association (YMCA) protocol in adults who were healthy.
Objective:
The purpose of the present study was to cross-validate the TBRS peak Vo2 prediction equation in older adults.
Design:
A cross-sectional study was conducted.
Methods:
Thirty participants (22 female, 8 male; mean age=66.8 years, SD=5.52; mean weight=68.51 kg, SD=13.39) who previously completed a peak exercise test and met the inclusion criteria were invited to participate in the cross-validation study. Within 5 days of the peak Vo2 test, participants completed the TBRS submaximal exercise test. The TBRS submaximal exercise test equation was used to estimate peak Vo2. The variables in the equation included age, weight, sex, watts (at the end of the submaximal exercise test), and heart rate (at the end of the submaximal exercise test).
Results:
A strong correlation was found between the predicted peak Vo2 and the measured peak Vo2. The difference between the values was 0.9 mL·kg(-1)·min(-1), which was not statistically different. The standard error of the estimate was 4.2 mL·kg(-1)·min(-1).
Limitations:
The sample included individuals who volunteered to perform a peak exercise test, which may have biased the results toward those willing to exercise to fatigue.
Conclusion:
The data suggest the TBRS submaximal exercise test and prediction equation can be used to predict peak Vo2 in older adults. This finding is important for health care professionals wanting to provide information to their patients or clients regarding their fitness level.
More Related Videos
07:10Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
Published on: August 24, 2019
07:26Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
Published on: October 17, 2018
Related Concept Videos
01:26Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
01:20Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
01:25Pulmonary Function Tests
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
01:17Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be...
01:47Lung Capacity