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Journal

2013

Environmental Physiology

Articles 1 - 3 of 3

Full-Text Articles in Life Sciences

Benign Conduction Abnormalities In Response To Acute, Moderately-High, Simulated Altitude Exposure, James B. Geeslin, Nicole E. Priest, Amy M. White, Matthew J. Garver, Libby E. Mccurley, Joe D. Bell, Sheila A. Jones, Dennis J. Kerrigan Feb 2013

Benign Conduction Abnormalities In Response To Acute, Moderately-High, Simulated Altitude Exposure, James B. Geeslin, Nicole E. Priest, Amy M. White, Matthew J. Garver, Libby E. Mccurley, Joe D. Bell, Sheila A. Jones, Dennis J. Kerrigan

International Journal of Exercise Science: Conference Proceedings

Acclimatization to altitude can improve endurance performance above levels achieved solely by training at sea level. There is natural limitation in the applicability of employing terrestrial altitude training – namely proximity. A simple, non-cumbersome method of simulating altitude is desirable to many types of endurance athletes. The Alto2Lab (Pharma Pacific Inc.), consisting of primarily a breathing tube and silo stack, has shown some potential in this role. There is a lack of evidence regarding whether simulated altitude exposure triggers abnormal cardiovascular responses. The aim of this study was to provide initial evidence of cardiac changes associated with usage patterns that …


Cerebrovascular Hemodynamics During Concentric And Eccentric Phases Of Heavy Resistance Exercise, Gilbert Moralez, Steven A. Romero, Caroline A. Rickards, Peter B. Raven, William H. Cooke Feb 2013

Cerebrovascular Hemodynamics During Concentric And Eccentric Phases Of Heavy Resistance Exercise, Gilbert Moralez, Steven A. Romero, Caroline A. Rickards, Peter B. Raven, William H. Cooke

International Journal of Exercise Science: Conference Proceedings

Rapid and drastic fluctuations in arterial blood pressures, such as those occurring during heavy resistance exercise pose a unique challenge to the maintenance of cerebral perfusion. During high-intensity leg cycling, regulation of cerebral perfusion is reduced by rapid decreases in beat-to-beat fluctuations in blood pressure (diastolic phase) rather than rapid increases (systolic phase). The purpose of this study was to test the hypothesis that rhythmic heavy resistance exercise will similarly impair the regulation of cerebral blood flow during the diastolic phase of beat-to-beat fluctuations in pressure. We studied seven healthy male subjects. Beat-to-beat finger arterial pressures, and middle cerebral artery …


Gender Differences In Skin And Core Body Temperature During Exercise In A Hot, Humid Environment., Adam S. Venable, Randall R. Williams, Brian K. Mcfarlin Feb 2013

Gender Differences In Skin And Core Body Temperature During Exercise In A Hot, Humid Environment., Adam S. Venable, Randall R. Williams, Brian K. Mcfarlin

International Journal of Exercise Science: Conference Proceedings

Background. It is universally accepted that men and women regulate heat differently during exercise in hot, humid environments. Despite this common knowledge, little empirical data is available to explain how gender differences effect core/skin temperature changes. Further, the data that is available includes only limited measurement sites and/or time points. Methods. The purpose of this study was to measure the heat regulatory patterns for both men and women during 60-min of exercise in a hot, humid environment. Twenty aerobically fit subjects (10 men; 10 women) completed an acclimation session followed by a 60-min exercise protocol in an environmental chamber set …