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The influence of wearing the Oxylog instrument on estimated maximal aerobic capacity during a step test and heart rate in a lifting test
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This study investigated the influence of wearing the Oxylog mask, and heart rate monitor while the Oxylog instrument is supported in a stand versus that of wearing the Oxylog mask, heart rate monitor, and the Oxylog instrument on the estimated maximum oxygen consumption (VO2max) and heart rate during a graduated submaximal step test protocol. The Oxylog instrument which includes a hose, straps, and mask adds approximately 4.31 kgs (9.5 lbs.) of weight to the individual when being worn in a study. Additionally, the influence of wearing the Oxylog mask, heart rate monitor, and Oxylog instrument versus that of just wearing a heart rate monitor on the heart rate of test participants in a graduated submaximal box lifting protocol was studied. Seventeen males, who were conditioned manual material handlers, participated in the study. Two step tests were completed by each participant, one with the instrument being supported in a stand and the participant just wearing the Oxylog mask and heart rate monitor, the second where the participant wore the Oxylog mask, heart rate monitor, and supported the Oxylog instrument. The tests were done in an order dictated by a Latin Square. The two lifting tests were also included in the Latin Square design, and required the participant to wear the Oxylog mask, heart rate monitor, and Oxylog instrument for one test and just a heart monitor for the second test. An estimated V02max was obtained for each participant through regression analysis of the step test data. Results from the two investigations indicate that there was no significant difference in the estimated maximal oxygen consumption (p = 0. 1 384), and no significant difference in the heart rate between the two lift tests. The analysis did show that the 4th stage of the step tests indicated a statistically significant difference, (p= 0.0259 for oxygen consumption, and p = 0.0465 for heart rate). The results of this study indicate that for a short submaximal test the added weight and restrictions of the Oxylog has no significant effect on the participants until they began to approach 85% of their maximum heart rate in stage 4 of the step tests. Further research is suggested with a larger sample population to substantiate the results since a large portion of the participants in this study did not complete the 5 stages.
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Includes bibliographical references: p. 27-28.
Issued also on microfiche from Lange Micrographics.
Bales, Dennis Wendell (1996). The influence of wearing the Oxylog instrument on estimated maximal aerobic capacity during a step test and heart rate in a lifting test. Master's thesis, Texas A&M University. Available electronically from
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