Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) 12-01-2008 REPORT TYPE Technical Report DATES COVERED (From -To ABSTRACTThe purpose of this study was to determine if using the Core Control™ Rapid Thermal Exchange (RTX), a commercial palm cooling device, during active rest periods of multiple set training, is an effective means to increase performance. Ten subjects completed three interval running tests on a human powered treadmill. In those performances subjects completed eight 30-second intervals at a hard/fast pace followed by a 90-second walking or light jogging recovery period. During the recovery period, the subjects placed their hand on one of three media: the RTX held at 15°C (R); a 15°C standard refrigerant gel pack (P), or nothing at all (C.) Although there were differences in core temperature (T c) , subjective heat stress ratings, distance and power generated between intervals, there were no significant differences found between treatments for any of these variables nor was the interaction effect of interval*treatment found to be significant. We conclude that the RTX, in its current iteration, is ineffective at improving performance and/or mitigating thermal stress during high-intensity intermittent exercise. SUBJECT TERMSCore Control™ Rapid Thermal Exchange, palm cooling device, thermal stress Distribution A: Approved for public release; distribution unlimited.ii THIS PAGE LEFT INTENTIONALLY BLANKDistribution A: Approved for public release; distribution unlimited.iii viii Executive Summary TABLE OF CONTENTS Purpose:The purpose of this study was to determine if using the CoreControl™ Rapid Thermal Exchange (RTX), a commercial palm cooling device, during active rest periods of multiple set training, is an effective means to increase performance. Our hypothesis was that use of the RTX would lower or slow increase in core temperature (T c ), during activity, resulting in greater work and/or training volume per exercise session. Methods:Ten volunteers (5 male, 5 female) participated in this study. Each volunteer completed four sessions. Session one comprised of a medical examination followed by a VO 2 max test administered via t...

Objectives: The United States Air Force (USAF) Combat Controller (CCT) training pipeline is extremely arduous and historically has an attrition rate of 70-80%. The primary objective of this study was to identify the physiological, psychological, or demographical characteristics associated with successful progression through the CCT pipeline program. Methods: A battery of physiological measurements, biographical information, and psychological tests were used to determine the profile of a successful CCT trainee. These measures were chosen on the basis of being standard physical fitness parameters, CCT-specific physical attribute indicators or validated psychological surveys. A multiple of physical tests served as measurements for cardiovascular endurance (VO 2 max and running economy), "anaerobic" capacity (Wingate power and loaded anaerobic endurance treadmill tests), body composition skinfolds measurements, power (Wingate and vertical jump), and reaction time (Makoto eye-hand test.) Each test was conducted using a standardized protocol. Psychological characteristics were explored through use of the International Personality Item Pool (IPIP-NEO) and the Mental Toughness Questionnaire 48 (MTQ 48). Results: Our findings revealed the following mean characteristics of 109 CCTs who completed Phase I of the pipeline and achieved their 3-level rating: 23 years old, 1.8m tall, 81kg, 12% body fat, VO 2 max of 59ml/kg/min, vertical jump of 62cm, able to generate 11.4W/kg peak power and 9.3W/Kg mean power during Wingate tests, overall mental toughness rating of 8 (out of 10) with high levels of extraversion and conscientiousness and low levels of neuroticism. The most popular competitive sport played in high school was football, followed by track, wrestling, and baseball. Conclusions: The results of the investigation confirm that CCT trainees who have achieved a 3-level rating possess much higher than average levels of aerobic and anaerobic fitness, power, mental toughness, extraversion and conscientiousness. They possess lower than average levels of neuroticism and openness to experience. These results may prove useful in refining the selection criteria and in designing training for CCT trainees. Same as Report (SAR) 18. NUMBER OF PAGES 9 19a. NAME OF RESPONSIBLE PERSON

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