Spelling suggestions: "subject:"balking -- aphysiological aspects."" "subject:"balking -- atphysiological aspects.""
11 |
The detection of double product break point in individuals with peripheral arterial diseaseLee, Kui-Joo January 2000 (has links)
Peripheral arterial disease (PAD) is a common manifestation of stenoses and occlusions of the arteries of the lower extremities. Clinically, PAD is an important effect on functional ability, and quality of life because symptomatic patients are typically able to walk less than one to three blocks before rest is required.The double product break point (DPBP), also defined as the oxygen consumption at which the first portion of nonlinear increase in rate pressure product (systolic blood pressure X heart rate) begins has been identified to determine the anaerobic threshold during exercise test. The purpose of this study was to determine whether the DPBP could be detected in patients with PAD during a symptom-limited GXT on the motor-driven treadmill. Six male subjects (68.2 ± 6.5 yrs) with history of diagnosis of PAD participated in this study. Double product (DP) was assessed every 15 seconds during the test via the Kyokko Bussan CM-4001 automated blood pressure unit. The DPBP and VT were determined visually by three blinded observers. The mean values of Peak V02 and maximal heart rate were 19.4 ± 5.8 (ml/kg/min) and 130 ± 13 (bpm), respectively. In 4 of the six exercise tests in the present study, the DPBP and the VT were determined. The mean V02 at the DPBP and the VT were 15.7 ± 2.6 ml/kg/min and 14.2 ± 0.6 ml/kg/min, corresponding to 73 ± 7.2 and 74.5 ± 5.4 % respectively. In 3 of the six exercise tests both of the DPBP and VT were determined. The Mean V02 at the DPBP and VT were 14.6 ± 1.8 and 14.3 ± 0.7, respectively. The difference of the mean VO2 at the VT and DPBP was -.0.33 ml/kg/min.In conclusion, the results of the present study suggest that the DPBP can be identified and used as a useful marker to determine the functional performance in PAD patients. Walking time or distance measurement depends on the patient's perception of the pain. Thus, this study provides an objective way to appraise the functional performance and therapeutic results obtained from the exercise training in PAD patients, and provides a reference for exercise prescription for this population. / School of Physical Education
|
12 |
Variability of walking and running economy among prepubertal, adolescent and adult femalesGay, Julie A. January 1995 (has links)
Daily variability of walking and naming economy (WE,") was assessed in eight prepubertal (P), eight adolescent (C) and eight adult females (A) on three separate days. Prior to testing all subjects engaged in 15 minutes of treadmill walking and running and performed a graded treadmill exercise test to maximal effort. On 3 additional days WE and RE were measured during five minutes each of walking and running. The order of exercise was randomized and each bout was separated by ten minutes of rest. A one-way analysis of variance (ANOVA) revealed differences (p < 0.05) in height, weight, sum of skinfolds, BSA, VO=Ax (ml-kg' .min 1), HRmAxbetween P vs C, and A. While there were no significant interactions between group and speed, a two-way ANOVA revealed differences between all three groups for WE and RE (p< 0.05). Repeated measures two-way ANOVA revealed significant day-to-day differences in RE but not WE. Coefficients of variation (CV) for economy were significantly greater for walking (4.33) than running (2.33). CV for WE and RE combined were significantly greater in P (4.43) than A (2.42). These results suggest dust daft variability of WE and RE appears to be a function of maturation and growth, with significance being acheived at the extremes of the maturation scale; the prepubescent child and the fully mature adult Furthermore, for research testing purposes, prepubertal children may require greater than two testing sessions, the amount recommended for adults. / Human Performance Laboratory
|
13 |
The Effect of Hand-Held Weights and Exaggerated Arm Swing on Heart Rate, Blood Pressure, and Ratings of Perceived Exertion during Submaximal WalkingAusten, Karen Christine 12 1900 (has links)
The purpose of this study was to investigate the effect of hand-weights and exaggerated arm swing on heart rate, blood pressure, and ratings of perceived exertion during submaximal walking. Twenty middle-aged (40- 59 years) female volunteers were given four submaximal treadmill tests at 3.0 mph and 0 grade. The four treatment conditions were as follows: 1) walking with unexaggerated arm swing (AS); 2) walking with unexaggerated arm swing with hand-held weights (ASHW); 3) walking with exaggerated arm swing (EAS), and 4) walking with exaggerated arm swing with hand-held weights (EASHW). The testing sequence was randomized and a minimum of 48 hr was given between tests.
|
Page generated in 0.1026 seconds