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open access

Effect of physical activity on body composition

Description: It has been noted that the deleterious effects on bone calcium of prolonged periods of inactivity, such as bed rest, are halted following resumption of activity. It would seem possible in light of the observations that have been made, that exercise may stimulate bone formation and perhaps counter, to some extent, bone loss as observed in the osteoporosis of aging. The present study was designed to determine the relation between total body calcium, total body potassium and bone mineral content o… more
Date: January 1, 1980
Creator: Zanzi, I; Ellis, K J; Aloia, J & Cohn, S H
Partner: UNT Libraries Government Documents Department
open access

Changes in vigorous physical activity and incident diabetes inmale runners

Description: We examined the dose-response relationship between changes in reported vigorous exercise (running distance, {Delta}km/wk) and self-reported physician diagnosed diabetes in 25,988 men followed prospectively for (mean {+-} SD) 7.8 {+-} 1.8 years. Logistic regression analyses showed that the log odds for diabetes declined significantly in relation to men's {Delta}km/wk (coefficient {+-} SE: -0.012 {+-} 0.004, P < 0.01), which remained significant when adjusted for BMI (-0.018 {+-} 0.003, P <… more
Date: April 30, 2007
Creator: Williams, Paul T.
Partner: UNT Libraries Government Documents Department
open access

Exaggerated Health Benefits of Physical Fitness and Activity dueto Self-selection.

Description: Background: The predicted health benefits of becomingphysically active or fit will be exaggerated if health outcomes causefitness and activity rather than the converse in prospective andcross-sectional epidemiological studies. Objective: Assess whether therelationships of adiposity to fitness and activity are explained byadiposity prior to exercising. Design: Cross-sectional study of physicalfitness (running speed during 10km foot race) and physical activity(weekly running distance) to current … more
Date: January 17, 2006
Creator: Williams, Paul T.
Partner: UNT Libraries Government Documents Department
open access

Self-selection contributes significantly to the lower adiposity offaster, longer-distanced, male and female walkers

Description: Although cross-sectional studies show active individuals areleaner than their sedentary counterparts, it remains to be determined towhat extent this is due to initially leaner men and women choosing toexercise longer and more intensely (self-selection bias). In this reportwalking volume (weekly distance) and intensity (speed) were compared tocurrent BMI (BMIcurrent) and BMI at the start of walking (BMIstarting) in20,353 women and 5,174 men who had walked regularly for exercise for 7.2and 10.6 y… more
Date: January 6, 2006
Creator: Williams, Paul T.
Partner: UNT Libraries Government Documents Department
open access

The effects of changing exercise levels on weight and age-relatedweight gain

Description: To determine prospectively whether physical activity canprevent age-related weight gain and whether changing levels of activityaffect body weight. DESIGN/SUBJECTS: The study consisted of 8,080 maleand 4,871 female runners who completed two questionnaires an average(+/-standard deviation (s.d.)) of 3.20+/-2.30 and 2.59+/-2.17 yearsapart, respectively, as part of the National Runners' Health Study.RESULTS: Changes in running distance were inversely related to changes inmen's and women's body mass… more
Date: June 1, 2004
Creator: Williams, Paul T. & Wood, Peter D.
Partner: UNT Libraries Government Documents Department
open access

Ultrastructural changes in the lung following exposure to perfluoroisobutylene (PFIB) and potentiation of PFIB-induced lung injury by post-exposure exercise

Description: The authors investigated the kinetics of development of the injurious effects of perfluoroisobutylene (PFIB) in the lower respiratory tract of the rat as a function of inhaled mass concentration. We additionally examined if exercise performed after exposure to PFIB can potentiate the severity of expression of PFIB-induced lung injury, while also assessing how PFIB exposure may result in reductions in work performance capacity. The severity of PFIB-induced lung injury was found to be directly pr… more
Date: January 1, 1990
Creator: Lehnert, B. E. & Stavert, D. M.
Partner: UNT Libraries Government Documents Department
open access

Work performance evaluation using the exercising rat model

Description: A treadmill-metabolic chamber system and a stress testing protocol have been developed to evaluate aerobic work performance on exercising rats that have inhaled toxic substances. The chamber with an enclosed treadmill provides the means to measure the physiologic status of rats during maximal work intensities in terms of O/sub 2/ consumption (V/sub 02/) and CO/sub 2/ production (V/sub c02/). The metabolic chamber can also accommodate instrumented rats for more detailed analyses of their cardiop… more
Date: January 1, 1987
Creator: Stavert, D. M. & Lehnert, B. E.
Partner: UNT Libraries Government Documents Department
open access

Energy metabolism and thermoregulation in old age

Description: Over their life spans, mice and men alike show a 15 to 30% decrease in their minimum, or resting, levels of energy metabolism, and a 50 to 70% decrease in the metabolism of activity. This, together with age-decrements in the capacity to regulate heat loss, makes the old person more susceptible to hypothermia that the young. Two independent relations of length of life to metabolic rate have been found in mice. First, as average metabolic rate increases, survival time decreases, and second, as th… more
Date: January 1, 1979
Creator: Sacher, G.A.
Partner: UNT Libraries Government Documents Department
open access

Amphetamine margin in sports. [Effects on performance of highly trained athletes]

Description: The amphetamines can enhance athletic performance. That much seems clear from the literature, some of which is reviewed here. Increases in endurance have been demonstrated in both man and rat. Smith and Beecher, 20 years ago, showed improvement of running, swimming, and weight throwing in highly trained athletes. Laboratory analogues of such performance have also been used and similar enhancement demonstrated. The amount of change induced by the amphetamines is usually small, of the order of a … more
Date: January 1, 1980
Creator: Laties, V. G. & Weiss, B.
Partner: UNT Libraries Government Documents Department
open access

Interactive effects of age and exercise on adiposity measures of41,582 physically active women

Description: The objective of this report is to assess in women whether exercise affects the estimated age-related increase in adiposity, and contrariwise, whether age affects the estimated exercise-related decrease in adiposity. Cross-sectional analyses of 64,911 female runners who provided data on their body mass index (97.6 percent), waist (91.1percent), and chest circumferences (77.9 percent). Age affected the relationships between vigorous exercise and adiposity. The decline in BMI per km/wk run was li… more
Date: June 1, 2004
Creator: Williams, Paul T. & Satariano, William A.
Partner: UNT Libraries Government Documents Department
open access

Cross-sectional relationships of exercise and age to adiposity in60,617 male runners

Description: The objective of this report is to assess in men whether exercise affects the estimated age-related increase in adiposity, and contrariwise, whether age affects the estimated exercise-related decrease in adiposity. Cross-sectional analyses of 64,911 male runners who provided data on their body mass index (97.6 percent), waist (91.1 percent), hip (47.1 percent), and chest circumferences (77.9 percent). Between 18 to 55 years old, the decline in BMI with weekly distance run (slope+-SE) was signif… more
Date: June 1, 2004
Creator: Williams, Paul T. & Pate, Russell R.
Partner: UNT Libraries Government Documents Department
open access

Fourth International Conference on Anticarcinogenesis and Radiation Protection: Supplement. Volume 54, No. 7

Description: This volume contains full papers of presentations given at the 4th International Conference of Anticarcinogenesis and Radiation Protection held in Baltimore, Maryland April 18--23, 1993. Presentations were grouped into topic areas entitled Mechanisms of Cancer and Aging; Biomarkers and Susceptibility Factors; Molecular Diagnosis; Nutrition, exercise, and Cancer; Molecular Mechanisms of Chemoprotection; and Clinical Interventions.
Date: April 1, 1994
Partner: UNT Libraries Government Documents Department
open access

Adherence to Exercise Programs in Older Adults: Informative Report

Description: This article focuses on filling information gaps regarding adherence to physical activity and exercise in the health care spectrum of older adults (OA) and an overview of the benefits of physical activity for OA. Exercise adherence in OA is a multifactorial problem encompassing many biopsychosocial factors. Factors affecting adherence in the OA include socioeconomic status, education level, living arrangements, health status, pacemakers, physical fitness, and depression. Improving adherence cou… more
Date: January 22, 2019
Creator: Rivera-Torres, Solymar; Fahey, Thomas D. & Rivera, Miguel A.
Partner: UNT Health Science Center
open access

Meeting USDHHS Physical Activity Guidelines and Health Outcomes

Description: This article discusses relating health markers (blood pressure, percent fat, BMI, blood glucose, cholesterol, and cardiorespiratory fitness) to verify the dose response for physical activity guidelines revision.
Date: January 2017
Creator: Lauer, E. Earlynn; Jackson, Allen W.; Martin, Scott B. & Morrow, James R.
Partner: UNT College of Education
open access

Oral Supplementation with Baker's Yeast Beta Glucan Is Associated with Altered Monocytes, T Cells and Cytokines following a Bout of Strenuous Exercise

Description: This article discusses a study to determine if 10 days of oral supplementation with Baker's yeast beta glucan (BYBG) could modify previously observed suppression of monocytes, T cells, circulating and whole blood LPS-stimulated cytokines due to strenuous exercise.
Date: October 20, 2017
Creator: McFarlin, Brian K.; Venable, Adam S.; Carpenter, Katie C.; Henning, Andrea L. & Ogenstad, Stephan
Partner: UNT College of Education
open access

Dry blood spot samples to monitor immune-associated mRNA expression in intervention studies: Impact of Baker's yeast beta glucan

Description: Article describes how monitoring immunological response to physical stressors in a field setting is challenging because existing methods require a laboratory visit and traditional blood collection via venipuncture. The purpose of this study was to determine if our optimized dry blood spot (DBS) methodology yields sufficient total RNA to quantify the effect of Baker's Yeast Beta Glucan supplementation on post-exercise mRNA expression.
Date: September 22, 2023
Creator: McFarlin, Brian K.; Bridgeman, Elizabeth A.; Vingren, Jakob L. & Will, David W.
Partner: UNT College of Science
open access

Systematic review on the current state of disaster preparation Simulation Exercises

Description: Article describes how the simulation exercise simulates an emergency in which an elaboration or description of the response is applied. The purpose of the study was to review disaster preparation exercises conducted by various national, non-government, and academic institutions.
Date: May 24, 2023
Creator: Mahdi, Syed Sarosh; Jafri, Hafsa Abrar; Allana, Raheel; Battineni, Gopi; Khawaja, Mariam; Sakina, Syeda et al.
Partner: UNT College of Liberal Arts & Social Sciences
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