Thesis (M. Sc.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 89-100).

Knowledge of the magnitude of error in any test measure is important in judging the relative significance of that measure. The purpose of this investigation was to determine the day-to-day variability of, and interrelationships between, three anaerobic ergometer tests. The three tests examined were 30 second sprint bouts on a hydraulically-braked Fitron ergometer, 60 second sprint bouts using this same ergometer, and timed rides to exhaustion at a workload corresponding to 125% VO max. A total of twenty-seven subjects were assigned at random to perform four trials of one of these tests at one week intervals. An additional nine subjects performed one trial of each test. The mean coefficients of variation (CVQ SD x 100%) for the performance measures (mean tolerance power or ride time) were 5.4%. 5.47., and 5.37% for the 30 second, 60 second, and exhaustive tests respectively. The mean CV for 10 minute post blood lactate were 11.0%., 13.9%, and 11.0% for these same tests. The mean CV for peak torque and fatiguability were 6.7 and 10.37 for the 30 second test and 5.67% and 7.5% for the 60 second test. Mean power during the 30 second and 60 second tests were significantly related (r=0.69, p<0.05) l but these measures were not correlated with time to exhaustion. Exhaustive time was, however, significantly related to ten minute post exercise lactate concentration (r=0.91, p<0.01). It was concluded that the biological variability of anaerobic tests is similar in magnitude to that reported for measures of aerobic fitness (VO max). These data also indicate that the exhaustive test is a measure of relative, but not absolute, anaerobic tolerance.

Seven highly trained male collegiate distance runners were studied throughout a competitive cross-country season. Common laboratory and field measures were used to assess physiological adaptation and performance capacity. The subjects were tested pre-, mid-, and post-season for maximal oxygen consumption (VO2max), running economy (RE), heart rate at 268 m-min…1 (HR268), fractional utilization of the aerobic capacity (%VO2max), fraction utilization of the maximal heart rate (%HRmax), ventilatory threshold (VT), and time to exhaustion (TTE). Prior to each scheduled competition submaximal hear rate (HR) and submaximal blood lactate accumulation (bLa) were determined from a one-mile run on an indoor track. Five subjects ran at 5 min 30 sec per mile pace and two ran at a 6 min per mile pace (mean intensity = 83.14 + 4.44% VO2max). VO2max, RE, % VO2max, %HRmax and TTE all significantly improved over the season (p < 0.05). VT and HR268 remained unchanged. % VO2max and %HRmax exhibited the highest correlations to performance within a given competition (range r = .525 to .722 and .571 to .844, respectively). HR and bLa did not change during the season. These results suggest: 1) % VO2max and %HRmax are the best predictors of cross-country running performance among the variables measured whereas 2) field trials employing single HR and single bLa measurements are not indicators of endurance running performance in highly trained distance runners. / Human Performance Laboratory

This thesis investigated the effect of high intensity, intermittent exercise (HIIE) on fat loss in young, sedentary women. It attempted also to identify possible mechanisms underpinning exercise-induced changes in adiposity. Study 1 investigated some of the metabolic and hormonal responses to two variations of HIIE. Sixteen female subjects were tested. The first session involved a cycle ergometer VO2peak test. The next two sessions were completed in random order. After baseline measures the women did 20 min of HIIE. There was a short bout exercise of 8 s work, followed by 12 s relative rest and a long bout exercise of 24 s work followed by 36 s relative rest. Seven subjects had excess postexercise oxygen consumption (EPOC) and resting metabolic rate determined. Both exercise modalities made significant demands on the participants??? oxygen delivery systems. RER diminished over the 20 min of exercise and plasma glycerol concentrations increased. Lactate concentrations rose. Catecholamine concentrations were elevated postexercise. There was an elevated EPOC associated with above baseline fat utilisation. Study 2, a 15-week training study, was a randomised controlled trial comparing the effects of short bout HIIE and steady state (SS) exercise on fat loss. Forty-five women were randomly assigned to one of three groups: HIIE, SS, or control. Preliminary and posttraining testing included a DEXA scan and a VO2peak test including blood collection. All participants completed 3-d diet diaries and maintained their current diet for the course of the study. Participants exercised three times a week for the next 15 weeks under supervision. The HIIE group did 20 min of HIIE (8 s work:12 s rest) at a workload determined from the VO2peak test. The SS group cycled at 60%VO2peak , building to a maximum of 40 min exercise. Both exercise groups increased VO2peak . The HIIE group had a significant loss of total body mass (TBM) and fat mass (FM) when compared to the other groups. There was no change in dietary intake. There have been a number of studies examining the acute effects of HIIE but, to our knowledge, this is the first study examining the chronic effects of this particular exercise protocol.

Thesis (Ph. D.)--Indiana University, 2006. / Includes bibliographical references (leaves 196-206). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

Thesis (M.S. Ed.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 51-54). Also available via the Internet.

Thesis (M.S.)--University of Wisconsin -- La Crosse, 1999. / Digitized and made available by the University of Wisconsin--La Crosse, Murphy Library. Includes bibliographical references. Online version of print edition.

Thesis (M.S. Ed.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 68-72). Also available via the Internet.

Thesis (M.S.)--Brigham Young University. Dept. of Exercise Sciences, 2005. / Includes bibliographical references.

Thesis (M. Sc.)--University of Hong Kong, 2005.