The Experts below are selected from a list of 225 Experts worldwide ranked by ideXlab platform
Hao Wen - One of the best experts on this subject based on the ideXlab platform.
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Personality Characteristics of Military Parachutists and the Level of Parachute Stress on SHG
Chinese journal of clinical psychology, 2000Co-Authors: Hao WenAbstract:Objective: To explore the personality characteristics of military Parachutists and levels of parachute stress on SHG. Methods: Subjects were measured under three separate time conditions: 24 hours before parachuting, just boarding aircraft, and immediately after landing. Personality characteristics were measured by EPQ, whereas SHG was assessed by RIA. Results: (1) Levels of SHG were significantly increased at time of boarding the aircraft as compared to 24 hours before parachuting. (2) Excellent military Parachutists tended to score high on extraversion, low on psychoticism, and low on emotionality. (3) Lower levels of SHG were obtained for demonstration Parachutists as compared to the non-demonstration group. Conclusion: SHG was a sensitive stress index for gauging levels of stress response.
Ralph Gräsbeck - One of the best experts on this subject based on the ideXlab platform.
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Preanalytical factors and standardized specimen collection: influence of psychological stress.
Scandinavian journal of clinical and laboratory investigation, 1992Co-Authors: Benoit Dugué, Esa Leppänen, Ralph GräsbeckAbstract:In order to devise and evaluate standardized specimen collection procedures, we studied the influence of psychological stress on the results of commonly analysed blood components: creatine kinase, lactate dehydrogenase, total protein and albumin in serum and blood picture. In addition, serum cortisol was assayed. Two kinds of stress were used: the Stroop test, a colour conflict task, and the thrill caused by the first jump of new Parachutists. More changes were observed after the Parachutist test than after the Stroop test. There was a difference in the responses of males and females. Females were more sensitive, especially to the Parachutist test. Most of the changes observed were interpreted as being caused by haemoconcentration, possibly related to muscular tension. Cortisol, commonly used to indicate the level of stress, did not react much and is therefore not a good index of psychological stress.
Heum Dai Kwon - One of the best experts on this subject based on the ideXlab platform.
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Unilateral spondylolysis combined with contralateral lumbar pediculolysis in a military Parachutist.
Journal of spinal disorders & techniques, 2006Co-Authors: Keun Su Kim, Young Woo Kim, Heum Dai KwonAbstract:Abstract:A few cases of unilateral pediculolysis combined with contralateral spondylolysis have been reported, and most of them were related to athletic activities. A case of unilateral spondylolysis combined with contralateral lumbar pediculolysis in a military Parachutist is reported. A 34-year-ol
Uwe Tewes - One of the best experts on this subject based on the ideXlab platform.
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Physiological arousal and perception of bodily state during parachute jumping.
Psychophysiology, 1992Co-Authors: Manfred Schedlowski, Uwe TewesAbstract:Heart rate and respiration rate were recorded with a portable data recording system before and during a parachute jump in 36 male sport Parachutists with differing degrees of experience. The recordings were analyzed at 12 psychologically relevant points in time along with the subjective ratings of physical arousal. Novice Parachutists showed a higher degree of self-rated arousal during jumps. However, the two groups displayed nearly parallel curves for heart and respiration rates, differing significantly from each other only in the level of their respective heart rates. Furthermore, experienced jumpers seem to be better informed about their state of physiological arousal during the jump than are novice jumpers. These results do not confirm the proposed anxiety inhibition process, postulated by Epstein (1967).
Bruce H. Jones - One of the best experts on this subject based on the ideXlab platform.
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Risk factors for injuries during military parachuting.
Aviation space and environmental medicine, 2003Co-Authors: Joseph J. Knapik, Stephen C. Craig, Keith G. Hauret, Bruce H. JonesAbstract:Introduction Parachuting is an activity performed by a variety of occupational groups including the military, firefighters (smoke jumpers), and rescue groups. Methods This paper systematically reviewed the literature on injury risk factors for soldiers performing static line parachuting from military aircraft. Jump-related injuries were defined as those occurring from the time the soldier exited the aircraft until he or she released their parachute harness on the ground. Results and discussion Despite methodological differences, where two or more studies examined a particular risk factor, results were generally similar. Higher injury risk was associated with higher wind speed, night jumps, jumps from airplanes (vs. balloons and helicopters), jumps wearing additional equipment jumps without ankle braces, uneven terrain on the drop zone, and female gender. Risk factors identified in only single studies included a greater number of soldiers exiting the aircraft, winds from the rear of the aircraft, simultaneous exits from doors on opposite sides of the aircraft, smaller parachute canopies, higher ambient air temperatures, and airborne refresher courses (vs. introductory courses). Further studies are needed which use a multivariate approach to evaluate the relative impact of the various risk factors and their interactions. Conclusions This paper identified a number of risk factors relevant to all Parachutists (e.g., wind speed, female gender) and some relevant primarily to the military and other tactical Parachutists such as smoke jumpers (e.g., equipment weight). Knowledge of these risk factors can assist Parachutists and those that train them in their risk analysis.
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Injury among female and male army Parachutists
Aviation space and environmental medicine, 1997Co-Authors: Paul J. Amoroso, Nicole S. Bell, Bruce H. JonesAbstract:BACKGROUND: While military parachuting injuries have been well studied, the relationship between gender and risk of injury has not. Injuries among women may be different due to anatomic and physiologic differences, or due to exposure to different jump conditions. Training methods and equipment developed for men may not be as effective in preventing injuries among women. HYPOTHESIS: We hypothesize that the nature and distribution of parachute injuries will vary by gender. METHODS: This descriptive retrospective study used 10 yr of parachute injury data reported to the U.S. Army Safety Center at Fort Rucker, AL, and exposure data obtained from the Defense Manpower Data Center, Monterey, CA. RESULTS: Women appear to jump under less hazardous conditions (jump more often than men in daylight and in static-line, non-tactical environments), yet appear to be at greater risk of serious injury, particularly lower extremity fractures. Injured male Parachutists are more likely to experience upper extremity injury. Women's injuries are more likely to be the result of an improper parachute landing fall or parachute malfunction, while men are more likely to be injured due to ground hazards. CONCLUSIONS: There are some provocative gender differences in patterns of injury. Further research is indicated starting with a comprehensive, prospective study, controlling for physical fitness and exposure differences, as well as for potential reporting bias, in order to better understand the apparent differences in reported injuries. Language: en
