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A Study of Lean Body Mass in Estimating Basal Metabolic Rate (open access)

A Study of Lean Body Mass in Estimating Basal Metabolic Rate

The primary purpose of the study was to determine if measured LBM could be used as a more powerful predictor of BMR than could surface area (SA) as calculated by the formula of DuBois and DuBois (1916). It was also of interest to develop a prediction equation for BMR using multiple regression analysis. Data from 82 women and 76 men were included in the study. Pearson product-moment correlations indicated that LBM was a better predictor for BMR than SA on either of the principal SA prediction equations, those of Aub and DuBois (1917) and Harris and Benedict (1919). Age, sex, and fat weight were not found to contribute significantly to prediction when included by multiple regression analyses. Linear equations for BMR as a function of LBM were developed for each sex. Tables based on these equations were also generated as a quick reference for clinicians.
Date: May 1985
Creator: Lachenbruch, Charles
System: The UNT Digital Library
The Effects of Relaxation and Imagery on Karate Performance (open access)

The Effects of Relaxation and Imagery on Karate Performance

The present investigation attempted to determine whether imagery combined with relaxation (VMBR) facmlitated karate performance more effectively than either imagery or relaxation alone. Each subject (N=30) was randomly assigned to either a VMBR, relaxation, imagery or placebo control condition. Trait anxiety tests were administered at the beginning and the end of the six week test period. Performance tests were administered at the final class period along with precompetitive state anxiety. Trait anxiety results indicated a reduction in trait anxiety for all groups. State anxiety results indicated that the VIYBR and relaxation groups exhibited less state anxiety than the imagery and control groups. Performance results produced a main effect only for sparring with the VMBR group exhibiting better performance than all other groups.
Date: May 1981
Creator: Seabourne, Thomas G.
System: The UNT Digital Library
The Effects of Anxiety on the Performance of Collegiate Golfers in Competitive and Non-Competitive Situations (open access)

The Effects of Anxiety on the Performance of Collegiate Golfers in Competitive and Non-Competitive Situations

The purposes of the study were to provide additional information concerning the relationship of Competition Trait Anxiety, State Anxiety, and Performance in collegiate golfers under non-competitive and competitive field settings. Subjects were thirty college males. Data were analyzed by a three-way analysis of variance with repeated measures. Conclusions of the investigation were (1) low-Competition-Trait-Anxious golfers performed better and exhibited lower levels of state anxiety than high-and moderate-Competitive-Trait-Anxious golfers in competitive and non-competitive settings; (2) collegiate golfers exhibit higher levels of state anxiety in competitive versus practice settings; and (3) there was a significant relationship between SCAT and pre-competitive state anxiety.
Date: May 1980
Creator: Genuchi, Marvin C.
System: The UNT Digital Library
Effects of Age, Fitness Level, and Exercise Training upon Autonomic Control of Heart Rate (open access)

Effects of Age, Fitness Level, and Exercise Training upon Autonomic Control of Heart Rate

In this study the effects of age (18-55 years), differing levels of fitness (VO 2max ranging from 35.5 to 68.8ml.kg-1.min-1) and endurance training (10 weeks) on heart rate control were investigated. Fitness level was initially determined by a VO2max stress test, succeeded by cold hand and cold face pressor test of autonomic activity. Following these baseline measurements, the subjects (32 nonsmoking male volunteers) were endurance-trained three to four times a week for a 10-week period. The baseline tests were readministered following the 10-week dynamic exercise training period. These data suggest that a natural consequence of aging is a diminishment of autonomic heart rate control; however, endurance training appears to interrupt the aging influence. Individuals of low fitness level appear to have heart rate control dominated by the sympathetic system, while individuals with high fitness levels have a vagally dominated heart rate control system.
Date: May 1980
Creator: Baun, William Boyd
System: The UNT Digital Library