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Articles 121 - 127 of 127
Full-Text Articles in Exercise Physiology
Effects Of Multiple Bouts Of Long-Duration Hindlimb Unloading And Recovery On Rat Plantaris Muscle, Emily E. Jaroszewski, Kevin L. Shimkus, Yasaman Shirazi-Fard, Harry A. Hogan, James D. Fluckey
Effects Of Multiple Bouts Of Long-Duration Hindlimb Unloading And Recovery On Rat Plantaris Muscle, Emily E. Jaroszewski, Kevin L. Shimkus, Yasaman Shirazi-Fard, Harry A. Hogan, James D. Fluckey
International Journal of Exercise Science: Conference Proceedings
Exposure to microgravity results in a rapid reduction of muscle mass. However, few studies exist designed to examine the effects of multiple long-term exposures to microgravity with alternating recovery periods on skeletal muscle. To determine what happens to the recovery of skeletal muscle when faced with subsequent unloading and recovery periods. Male Sprague-Dawley (6 mo) were assigned to the following groups as shown in figure 1 below: 28d hindlimb unloading (1HU), 28d HU session followed by a 56d recovery bout of normal cage ambulation at 1g (1HU+REC), 2 cycles of 28d HU with a 56d recovery period between unloadings (2HU), …
Artificial Sweetener Sensing In The Human Mouth And Effect On Exercise Performance, James Mock
Artificial Sweetener Sensing In The Human Mouth And Effect On Exercise Performance, James Mock
International Journal of Exercise Science: Conference Proceedings
Many studies have suggested that oral rinsing of a sweet carbohydrate can positively affect exercise performance by stimulating reward centers in the brain. However, few studies have been performed which compared the effects of a sweet carbohydrate with a sweet artificial sweetener. The purpose of this study was to examine the effects of a sweet carbohydrate rinse, an artificial sweetener rinse, and a water rinse on exercise performance. Eight college students completed a ten-minute trial ride and were able to perform significantly more work when rinsing with the carbohydrate or artificial sweetener rinses (Total work= 116.63 (20.3) kJ p=0.003, 117.04 …
Physical, Cardiovascular, & Metabolic Effects Of Non-Exercise Weighted Vest Training, Mattie A. Mccain, Scott P. Mclean Phd, Jimmy C. Smith Phd
Physical, Cardiovascular, & Metabolic Effects Of Non-Exercise Weighted Vest Training, Mattie A. Mccain, Scott P. Mclean Phd, Jimmy C. Smith Phd
International Journal of Exercise Science: Conference Proceedings
Introduction: The high prevalence of obesity and sedentary lifestyle contribute to the growing burden of health care costs, incidence of disease, and mortality, making a lifestyle that includes regular physical activity increasingly important. Low intensity resistance training has been studied as a possible intervention to increase physical activity in inactive individuals. Purpose: To determine the effects of a weighted vest treatment (WV) on steady state VO2, O2 deficit, VO2max, body mass index (BMI), and resting blood pressure (RBP). Methods: Fourteen college age women participated in a 4 week trial and completed both pre and posttest evaluations. These evaluations included a …
Effects Of Aging On Endothelium-Dependent Vasodilation In Cerebral Arteries, Amanda De Jong, Landon Evans, Elisa Boyd, Scott A. Spier
Effects Of Aging On Endothelium-Dependent Vasodilation In Cerebral Arteries, Amanda De Jong, Landon Evans, Elisa Boyd, Scott A. Spier
International Journal of Exercise Science: Conference Proceedings
Regional cerebral blood flow (CBF) decreases with aging. This reduction may be due to a diminished endothelium-dependent vasodilation in large cerebral arteries with aging in the absence of disease. The posterior communicating arteries (PCoA) supply blood flow to the midbrain areas where age-related regional decreases in blood flow have been observed. Furthermore, the PCoA appear to be clinically relevant in age-related cerebrovascular disorders. However, age-related changes in the vasoreactivity of PCoA have not been investigated in the absence of disease. The purpose of this study was to determine the effect of aging on endothelium-dependent vasodilation of PCoA in rats. Posterior …
Vitamin D Status Relative To Diet, Lifestyle, Injury, And Illness In College Athletes, Tanya M. Halliday, Nikki J. Peterson, Joi J. Thomas, Kent Kleppinger, Bruce W. Hollis, D. Enette Larson-Meyer
Vitamin D Status Relative To Diet, Lifestyle, Injury, And Illness In College Athletes, Tanya M. Halliday, Nikki J. Peterson, Joi J. Thomas, Kent Kleppinger, Bruce W. Hollis, D. Enette Larson-Meyer
International Journal of Exercise Science: Conference Proceedings
Vitamin D deficiency is endemic in the general population; however, there is much to be learned about the vitamin D status of athletes. Purpose: The purposes of this study were to assess the prevalence of vitamin D insufficiency in collegiate athletes and to determine whether 25(OH)D concentrations are related to vitamin D intake, sun exposure, body composition, and risk for illness or athletic injury. Methods: 25(OH) vitamin D concentrations were measured in 41 athletes (18 men/23 women, 12 indoor/29 outdoor athletes) throughout the academic year. Dietary intake and lifestyle habits were assessed via questionnaire, bone density was measured by dual …
Ros-Mediated Localization Of Caveolin-3 In The Sarcolemma During Short-Term Mechanical Unloading, Jeff M. Hord, Mary Kunst, Kumar Joshi, Yang Lee, Daniel A. Martinez, John M. Lawler
Ros-Mediated Localization Of Caveolin-3 In The Sarcolemma During Short-Term Mechanical Unloading, Jeff M. Hord, Mary Kunst, Kumar Joshi, Yang Lee, Daniel A. Martinez, John M. Lawler
International Journal of Exercise Science: Conference Proceedings
The dystroglycan complex (DGC) is a latticework of cell membrane proteins that provide a mechanical link to the cytoskeleton and initiate cell signaling that provides integrity, regulates protein turnover, stimulates growth, etc. Caveolin-3 has been identified as a muscle-specific isoform of the caveolin family of proteins, and in skeletal muscle, caveolin-3 is localized in caveolae within the sarcolemma. Evidence from Duchenne and Limb-Girdle Muscular Dystrophies suggests the involvement of caveolin-3 and reactive oxygen species (ROS) in the disruption of the DGC and thus myopathy. We examined ROS as upstream activators of caveolin-3 sarcolemmal localization in skeletal muscle during disuse atrophy. …
Effect Of Text Messaging And Cellphone Use On A Multi-Sensory Tracking Task, John-Paul Connell, Carla Brown, Chelsey Hannah, Shane Huff, Dr. Scott Marzilli
Effect Of Text Messaging And Cellphone Use On A Multi-Sensory Tracking Task, John-Paul Connell, Carla Brown, Chelsey Hannah, Shane Huff, Dr. Scott Marzilli
International Journal of Exercise Science: Conference Proceedings
This experiment studied subjects’ performance on a continuous multisensory tracking task. Different theories suggest that there is a decrease in performance due to attentional capacity; furthermore, talking or texting on a mobile phone will negatively affect task performance. Twenty-four college-age students were recruited to be tested on the Biodex Balance System SD with the texting condition, talking on a mobile phone condition, and control condition. Results showed that text messaging while performing a continuous multisensory tracking task negatively affected performance. There was no significant difference, however, between the control condition and talking on a mobile phone while completing the task. …