Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.

Thesis (M.Sc.)--York University, 2005. Graduate Programme in Kinesiology and Health Science. / Typescript. Includes bibliographical references (leaves 70-88). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url%5Fver=Z39.88-2004&res%5Fdat=xri:pqdiss &rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR11787

Thesis (M.S.)--University of Nebraska at Omaha, 2005. / Includes bibliographical references (leaves 84-89). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

The purpose of this study was to compare the relationship between immersion running and treadmill running through the measurement of cardiorespiratory parameters. Sixteen subjects completed two exercise protocols to exhaustion. The treadmill running protocol was initiated at 3.08 m*s-l and increased a 0.22 m*s-l every sixty seconds. The immersion running protocol utilized an immersion running Ergometer (IRE). The IRE is similar to a tethered swim machine. The initial weight was set at 1 kg and Increased a 1/2 kg every sixty seconds. Heart rate (HR), oxygen consumption (V02), ventilatory equivalent (VE/V02), and minute ventilation (VE) were determined at ventilatory threshold and at maximal effort, HR, V02, VE/V02 and VE were analyzed by MANOVA (RM). Tidal volume and frequency of breathing were collected for four subjects at ventilatory threshold and at maximal effort (no statistical analysis). Two subjects who had completed the initial exercise protocols volunteered for a follow up study of blood flow distribution testing (no statistical analysis). These subjects were injected with Tc-99 2-methyloxy isobutyl isonitrlle at ventilatory threshold during immersion and treadmill running. Imaging was performed with a Selmans Gamma Camera at the UBC Dept. of Nuclear Medicine. V02 and HR at ventilatory threshold and maximal effort were significantly lower (P < .05) during immersion running. VE/V02 was significantly greater at maximal effort during immersion. Minute ventilation was unaffected by immersion, however, there was a trend towards a smaller tidal volume and greater frequency of breathing. The blood flow distribution data varied considerably partially between subjects. The significant drop in V02 at maximum effort and at ventilation threshold during immersion running may be accounted for by changes in muscle mass recruitment, muscle fibre type recruitment, recruitment pattern and state of peripheral adaptation (muscular). A lower heart rate during immersion may be due to increases in intrathoracic blood volume. The trend towards a higher breathing frequency and lower tidal volume during immersion running may be due to the increased effort to breath caused by hydrostatic chest compression. The significant increase in VE/V02 at maximal effort during immersion running was due to the significant drop in V02. It may be concluded that immersion running causes significant changes in cardiorespiratory parameters at ventilatory threshold and at maximal effort. Research is needed to investigate the significance of the changes. / Education, Faculty of / Curriculum and Pedagogy (EDCP), Department of / Graduate

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Studies assessing the reliability of the Borg rating of perceived exertion (RPE) scale for regulating exercise training intensity have reported mixed results. Differences in experimental designs and analytical techniques make it difficult to compare results. The purpose of this study was to examine the reliability of perceptually-based treadmill (TM) exercise. Eleven subjects (42.5 ± 19.5 yrs) completed a maximal test (GXT) and 3 RPEproduction trials (PT) on a TM. Each PT consisted of two 10-minute bouts where subjects selected speeds and grades to elicit an intensity equated with an RPE of 11-12 (RPE-L) and RPE of 15-16 (RPE-H). Speed and grade, heart rate (HR), oxygen uptake (V02), and ventilatory equivalent for oxygen (VE/V02) were assessed throughout the GXT and the last 3 minutes of each PT. Blood lactate concentration (BLC) was assessed at RPE-L and RPE-H during the GXT and at the completion of each PT intensity. Reliability was assessed using an ANOVA with repeated-measures, intraclass correlations, and absolute differences (ABS A) across the PTs at each intensity. No significant meangroup differences were noted in any of the physiological variables at either intensity across the PTs. Reliability coefficients were higher for the selected workload and the metabolic measures than for HR or BLC. Reliability increased across trials for all measures, and as a function of intensity for V02 (L = 0.91 & H = 0.98), HR (L = 0.60 & H = 0.84), and BLC (L = 0.50 & H = 0.64). Mean ABS A evaluated the inter-trial reliability for HR (bpm) and V02 (METS) at the low intensity PT 1 vs. PT2 = 013 bpm; A3.3 METS, PT 1 vs. PT3 = 010 bpm ; A3.3 METS, and PT2 vs. PT3 = A7 bpm; 01.6 METS and the high intensity PT 1 vs. PT2 = 011 bpm; A2.5 METS, PT 1 vs. PT3 = 011 bpm; A3.4 METS, and PT2 vs. PT3 = A9 bpm; A2.2 METS, respectively. Mean ABS A decreased for HR and V02 between PT2 vs. PT3. These data suggest that reliability of perceptually-based TMexercise varies among physiological measures and various analytical techniques, and individual variation in physiological data across PTs should be considered prior torecommending RPE for the self-regulation of exercise. / School of Physical Education

The purpose of this study was to determine the construct validity of self-reported historical walking, running, and jogging (WRJ) activity. The criterion measure was concurrent performance on a maximal treadmill test. Subjects completed a medical exam and treadmill test between the years 1976 and 1985, and completed a follow-up questionnaire in 1986. Questionnaire included an item that assessed WRJ for each year from 1976 through 1985. Data analysis included Spearman correlations, partial correlations, ANOVA, and ANCOVA. Results indicated self-reported historical WRJ can be assessed with reasonable validity when compared with concurrently measured treadmill performance, and there is no decay in the accuracy of this reporting for up to ten years in the past.

The purpose of this study was to determine the validity of the Ebbeling one-stage submaximal treadmill protocol to estimate maximal oxygen uptake in overweight males and females. Forty-five male and females (36.5±10.9 years; 170.2±9.9 cm; 77.9±9.0 kg) were categorized into overweight groups using a BMI of 25-29.9 kg/m2. The subjects performed a submaximal protocol that consisted of one 4-minute stage with individualized speeds of 2.0-4.5 mph at 5% grade and subsequently performed a maximal exercise test. There were significant relationships between observed and estimated VO2max for males (r=.796), females (r=.426), and gender combined (r=.844). There was an underestimation in the estimation of VO2max in the present study when comparing males (10%), females (26%) and gender combined (17%) subjects. The results indicated that a body mass index between the values of 25-29.9 kg/m2 did create a difference in estimating VO2max in the present study when comparing that to Ebbeling et al. (1991).Ball State UniversityMuncie, IN 47306 / School of Physical Education

Thesis (M.S.)--James Madison University, 2009. / Includes bibliographical references.