Document Type

Thesis - Open Access

Award Date

1985

Degree Name

Master of Science (MS)

Department

Physical Education

First Advisor

Jack Ewing

Abstract

Thirteen prepubertal females (M=8.88 years) were tested for the determination of maximum oxygen uptake using two protocols, one being continuous in nature and the other discontinuous. Each subject completed three separate testing sessions. The first session was a familiarization session where each child was familiarized with the equipment and experienced a simulated discontinuous test on the treadmill. A continuous treadmill test and a discontinuous treadmill test were completed by each subject, the order of which was randomly assigned. The speed of the continuous test was maintained at 4.1 mph and 0% grade throughout the test. Without a rest between workloads, the grade was increased by 2.5% every three minutes until the subject could no longer continue. The speed of the discontinuous test was also maintained at a speed of 4.1 mph and 0% grade. A five minute rest period was placed between each three minute workload with the grade being increased by 2.5% each stage until the subject could no longer continue or until a plateau of less than or equal to 2.1 ml/kg/min between successive workloads was reached. The open circuit method was used to determine metabolic measures. A correlated groups t-test was used to determine if significant differences existed between the means of the dependent variables (V02max in 1/min and ml/kg/min, respiratory exchange ratio, and stage number at the cessation of the test) for continuous and discontinuous testing. A significant difference was found in maximal oxygen uptake values between the continuous and discontinuous tests in both 1/min and ml/kg/min. The mean maximal oxygen uptake for the discontinuous test was 51.76 + 6.22 ml/kg/min and for the continuous test was 47.49 + 5.74 ml/kg/min. No significant difference was found between the two test protocols for the respiratory exchange ratio. A significant difference was found between the stage number at test termination between the two protocols. The subjects were able to complete 1.4 additional stages during the discontinuous test.

Library of Congress Subject Headings

Treadmill exercise tests
Physical fitness -- Testing
Physical fitness for children

Format

application/pdf

Number of Pages

71

Publisher

South Dakota State University

Rights

No Copyright - United State
http://rightsstatements.org/vocab/NoC-US/1.0/

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