Scott J Montain

Summary

Affiliation: Walter Reed Army Medical Center
Country: USA

Publications

  1. ncbi request reprint Bioimpedance assessment of hypohydration
    C O'BRIEN
    U S Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Med Sci Sports Exerc 31:1466-71. 1999
  2. ncbi request reprint Role of core temperature as a stimulus for cold acclimation during repeated immersion in 20 degrees C water
    C O'BRIEN
    Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760 5007, USA
    J Appl Physiol (1985) 89:242-50. 2000
  3. ncbi request reprint Bioelectrical impedance to estimate changes in hydration status
    C O'BRIEN
    U S Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Int J Sports Med 23:361-6. 2002
  4. ncbi request reprint Hypohydration effect on finger skin temperature and blood flow during cold-water finger immersion
    Catherine O'Brien
    United States Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760 5007, USA
    J Appl Physiol (1985) 94:598-603. 2003
  5. ncbi request reprint Peripheral responses to cold: case studies from an Arctic expedition
    Catherine O'Brien
    Thermal and Mountain Medicine Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Wilderness Environ Med 14:112-9. 2003
  6. ncbi request reprint Utility of circulating IGF-I as a biomarker for assessing body composition changes in men during periods of high physical activity superimposed upon energy and sleep restriction
    Bradley C Nindl
    Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    J Appl Physiol (1985) 103:340-6. 2007
  7. doi request reprint Independent and combined effects of eating rate and energy density on energy intake, appetite, and gut hormones
    J Philip Karl
    Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, Massachusetts, USA
    Obesity (Silver Spring) 21:E244-52. 2013
  8. ncbi request reprint Intermittent microclimate cooling during exercise-heat stress in US army chemical protective clothing
    Bruce S Cadarette
    U S Army Research Institute of Environmental Medicine, Kansas St, Natick, MA 01760 5007, USA
    Ergonomics 49:209-19. 2006
  9. ncbi request reprint Differential responses of IGF-I molecular complexes to military operational field training
    Bradley C Nindl
    Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    J Appl Physiol (1985) 95:1083-9. 2003
  10. doi request reprint Effects of dietary protein content on IGF-I, testosterone, and body composition during 8 days of severe energy deficit and arduous physical activity
    Joseph A Alemany
    Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    J Appl Physiol (1985) 105:58-64. 2008

Detail Information

Publications50

  1. ncbi request reprint Bioimpedance assessment of hypohydration
    C O'BRIEN
    U S Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Med Sci Sports Exerc 31:1466-71. 1999
    ..This study examined the utility of bioimpedance spectroscopy (BIS) for assessing total body water (TBW) changes associated with moderate (6-7% TBW), hypertonic (HH), and isotonic (IH) hypohydration...
  2. ncbi request reprint Role of core temperature as a stimulus for cold acclimation during repeated immersion in 20 degrees C water
    C O'BRIEN
    Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760 5007, USA
    J Appl Physiol (1985) 89:242-50. 2000
    ..Skin temperature reduction alone may be a sufficient stimulus during CA for increased vasoconstrictor response, but core temperature reduction appears necessary to enhance sympathetic activation during cold exposure...
  3. ncbi request reprint Bioelectrical impedance to estimate changes in hydration status
    C O'BRIEN
    U S Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Int J Sports Med 23:361-6. 2002
    ..The results indicate that current BIA methodology may not provide valid estimates of total body water when hydration state is altered...
  4. ncbi request reprint Hypohydration effect on finger skin temperature and blood flow during cold-water finger immersion
    Catherine O'Brien
    United States Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760 5007, USA
    J Appl Physiol (1985) 94:598-603. 2003
    ..5 +/- 0.2 degrees C), compared with during Eu (37.1 +/- 0.1 degrees C). The results of this study provide no evidence that Hy alters finger blood flow, skin temperature, or CIVD during peripheral cooling...
  5. ncbi request reprint Peripheral responses to cold: case studies from an Arctic expedition
    Catherine O'Brien
    Thermal and Mountain Medicine Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Wilderness Environ Med 14:112-9. 2003
    ..The conditions were similar to those during which acclimatization has been demonstrated, yet they were also conducive to development of peripheral cold injury...
  6. ncbi request reprint Utility of circulating IGF-I as a biomarker for assessing body composition changes in men during periods of high physical activity superimposed upon energy and sleep restriction
    Bradley C Nindl
    Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    J Appl Physiol (1985) 103:340-6. 2007
    ....
  7. doi request reprint Independent and combined effects of eating rate and energy density on energy intake, appetite, and gut hormones
    J Philip Karl
    Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, Massachusetts, USA
    Obesity (Silver Spring) 21:E244-52. 2013
    ..To determine the combined effects of ED and ER manipulation on voluntary food intake, subjective appetite, and postprandial pancreatic and gut hormone responses...
  8. ncbi request reprint Intermittent microclimate cooling during exercise-heat stress in US army chemical protective clothing
    Bruce S Cadarette
    U S Army Research Institute of Environmental Medicine, Kansas St, Natick, MA 01760 5007, USA
    Ergonomics 49:209-19. 2006
    ..m(-2)) ( p < 0.05). These findings suggest that IC provided a favourable skin to LCG gradient for heat dissipation by conduction and reduced heat strain comparable to CC during exercise-heat stress in chemical protective clothing...
  9. ncbi request reprint Differential responses of IGF-I molecular complexes to military operational field training
    Bradley C Nindl
    Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    J Appl Physiol (1985) 95:1083-9. 2003
    ..the relative proportion of IGF-I sequestered in ternary vs. nonternary molecular complexes appears to be well maintained...
  10. doi request reprint Effects of dietary protein content on IGF-I, testosterone, and body composition during 8 days of severe energy deficit and arduous physical activity
    Joseph A Alemany
    Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    J Appl Physiol (1985) 105:58-64. 2008
    ..01). Dietary protein content of 0.5 and 0.9 g/kg minimally attenuated the decline of IGF-I, the androgenic system, and fat-free mass during 8 days of negative energy balance associated with high energy expenditure and low energy intake...
  11. ncbi request reprint Altered secretion of growth hormone and luteinizing hormone after 84 h of sustained physical exertion superimposed on caloric and sleep restriction
    Bradley C Nindl
    Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760, USA
    J Appl Physiol (1985) 100:120-8. 2006
    ..During periods of energy deficiency, amplitude modulation of GH and LH pulses may precede alterations in pulse numbers...
  12. doi request reprint Surface contamination artificially elevates initial sweat mineral concentrations
    Matthew R Ely
    U S Army Research Institute of Environmental Medicine, Kansas St, Bldg 42, Natick, MA 01760 5007, USA
    J Appl Physiol (1985) 110:1534-40. 2011
    ..g., under fingernails, on arm hair), then decrease with extended sweating and approach those measured from the scapular region...
  13. ncbi request reprint Estimation of human core temperature from sequential heart rate observations
    Mark J Buller
    US Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    Physiol Meas 34:781-98. 2013
    ..58 °C) our results suggest it is accurate enough to provide practical indication of thermal work strain for use in the work place. ..
  14. ncbi request reprint Impact of a protective vest and spacer garment on exercise-heat strain
    Samuel N Cheuvront
    Thermal and Mountain Medicine Division, US Army Research Institute of Environmental Medicine, Kansas Street, Natick, MA 01760 5007, USA
    Eur J Appl Physiol 102:577-83. 2008
    ..05). SR was higher (P < 0.05) in P and S versus B, but the magnitude of differences was small. A protective vest increases physiological strain independent of added load, while a spacer garment does not alter this outcome...
  15. doi request reprint Evidence against a 40 degrees C core temperature threshold for fatigue in humans
    Brett R Ely
    US Army Research Institute of Environmental Medicine, Thermal and Mountain Medicine Division, Kansas St, Natick, MA 01760 5007, USA
    J Appl Physiol (1985) 107:1519-25. 2009
    ..Our observation that runners were able to sustain running velocity despite T(re) >40 degrees C is evidence against 40 degrees C representing a "critical" core temperature limit to performance...
  16. doi request reprint Mechanisms of aerobic performance impairment with heat stress and dehydration
    Samuel N Cheuvront
    US Army Research Institute of Environmental Medicine, Thermal and Mountain Medicine Division, Kansas St, Natick, MA 01760 5007, USA
    J Appl Physiol (1985) 109:1989-95. 2010
    ..Dehydration augments hyperthermia and plasma volume reductions, which combine to accentuate cardiovascular strain and reduce Vo(2max). Importantly, the negative performance consequences of dehydration worsen as T(sk) increases...
  17. ncbi request reprint Impact of weather on marathon-running performance
    Matthew R Ely
    U S Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    Med Sci Sports Exerc 39:487-93. 2007
    ..Marathon running performance slows in warm weather conditions, but the quantitative impact of weather has not been established...
  18. ncbi request reprint Cognition during sustained operations: comparison of a laboratory simulation to field studies
    Harris R Lieberman
    U S Army Research Institute of Environmental Medicine, Natick 01760 5007, USA
    Aviat Space Environ Med 77:929-35. 2006
    ..Our laboratory developed a brief, intense, laboratory-based simulation of a multistressor environment which included sleep loss, continuous physical activity, and food deprivation...
  19. ncbi request reprint Evaluation of the limits to accurate sweat loss prediction during prolonged exercise
    Samuel N Cheuvront
    US Army Research Institute of Environmental Medicine, Thermal and Mountain Medicine Division, Kansas Street, Natick, MA 01760 5007, USA
    Eur J Appl Physiol 101:215-24. 2007
    ..Adjustments for NSL and clothing saturation dynamics help explain SHAP errors at 2 and 8 h, respectively. These results provide a basis for future development of accurate algorithms with broader utility...
  20. ncbi request reprint A simple and valid method to determine thermoregulatory sweating threshold and sensitivity
    Samuel N Cheuvront
    US Army Research Institute of Environmental Medicine, Thermal and Mountain Medicine Division, Kansas St, Natick, MA 01760 5007, USA
    J Appl Physiol (1985) 107:69-75. 2009
    ..Rater and SReg were not different by conventional t-test (P > 0.05). SReg provides a simple, valid, and standardized way to determine sweating threshold temperature and sweating sensitivity values for thermoregulatory studies...
  21. ncbi request reprint Eighty-four hours of sustained operations alter thermoregulation during cold exposure
    John W Castellani
    US Army Research Institute of Environmental Medicine Natick, MA 01760 5007, USA
    Med Sci Sports Exerc 35:175-81. 2003
    ..PURPOSE; This study examined the effects of short-term (3.5 d) sustained military operations (SUSOPS) on thermoregulatory responses to cold stress...
  22. ncbi request reprint Sweat mineral-element responses during 7 h of exercise-heat stress
    Scott J Montain
    Military Nutrition Div, US Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Int J Sport Nutr Exerc Metab 17:574-82. 2007
    ..Uncertainty exists regarding the effect of sustained sweating on sweat mineral-element composition...
  23. ncbi request reprint Reliability assessment of two militarily relevant occupational physical performance tests
    Clay E Pandorf
    Military Performance Division, U S Army Research Institute of Environmental Medicine, Natick, MA, USA
    Can J Appl Physiol 28:27-37. 2003
    ..This study demonstrates that both are reliable tests, but they do require administration of 1 single-trial session of RBLT and 2 two-trial sessions of OC before highly reliable performance data are obtained...
  24. ncbi request reprint Efficacy of intermittent, regional microclimate cooling
    Samuel N Cheuvront
    United States Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760 5007, USA
    J Appl Physiol (1985) 94:1841-8. 2003
    ..These findings indicate that the IRC approach to MCC is a more efficient means of cooling when compared with CC paradigms and can improve MCC capacity by reducing power requirements...
  25. ncbi request reprint Exercise-heat acclimation in humans alters baseline levels and ex vivo heat inducibility of HSP72 and HSP90 in peripheral blood mononuclear cells
    James P McClung
    US Army Research Institute of Environmental Medicine, Natick, MA, USA
    Am J Physiol Regul Integr Comp Physiol 294:R185-91. 2008
    ..These data demonstrate that physiological adaptations in humans undergoing HA are accompanied by both increases in baseline levels and changes in regulation of cytoprotective HSPs...
  26. doi request reprint Hypohydration and muscular fatigue of the thumb alter median nerve somatosensory evoked potentials
    Scott J Montain
    Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    Appl Physiol Nutr Metab 35:456-63. 2010
    ..3) ms; HY-Fatigue: 18.4 (SD 1.5) ms; p=0.034), but N20 and N20-P22 amplitude responses were similar between HY and EU trials. We concluded that moderate water deficits appear to alter afferent signal processing within the cerebral cortex...
  27. ncbi request reprint Energy requirements of military personnel
    William J Tharion
    Military Nutrition Division, US Army Research Institute of Environmental Medicine, Kansas Street, Natick, MA 0176 5007, USA
    Appetite 44:47-65. 2005
    ..Compared to temperate conditions, total energy expenditures did not appear to be influenced by hot weather, but tended to be higher in the cold or high altitude conditions...
  28. ncbi request reprint Reliability assessment of ballistic jump squats and bench throws
    Joseph A Alemany
    Military Performance Division, U S Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    J Strength Cond Res 19:33-8. 2005
    ..Slightly greater variability for JS was observed, although the test had high reliability...
  29. doi request reprint Protein supplementation in U.S. military personnel
    Stefan M Pasiakos
    Military Nutrition Division, U S Army Research Institute of Environmental Medicine, Natick, MA
    J Nutr 143:1815S-1819S. 2013
    ..Furthermore, it highlights the unique metabolic stressors affecting U.S. military personnel and discusses potential conditions during which protein supplementation might be beneficial. ..
  30. ncbi request reprint Measurement of insulin-like growth factor-I during military operational stress via a filter paper blood spot assay
    Bradley C Nindl
    Military Performance Division, U S Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760, USA
    Diabetes Technol Ther 5:455-61. 2003
    ..The filter paper blood spot method for IGF-I detected reductions accompanying nutritional stress and may be of potential value for characterizing the IGF-I response when conventional blood sampling methods are not feasible...
  31. ncbi request reprint Fluid replacement and performance during the marathon
    Samuel N Cheuvront
    US Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760 5007, USA
    Sports Med 37:353-7. 2007
    ..Recommendations are provided to individualise fluid intakes with the goal of preventing excessive dehydration (>2% body mass) as well as weight gain. The minor importance of 'matters of debate' to fluid replacement is also discussed...
  32. doi request reprint Eating rate during a fixed-portion meal does not affect postprandial appetite and gut peptides or energy intake during a subsequent meal
    J Philip Karl
    Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    Physiol Behav 102:524-31. 2011
    ..Ad libitum energy intake was not different between trials. In conclusion, the rate at which a fixed-portion meal is consumed does not appear to alter satiety despite a small effect on PP and CCK responses...
  33. ncbi request reprint The effect of heat acclimation on sweat microminerals: artifact of surface contamination
    Matthew R Ely
    U S Army Research Institute of Environmental Medicine, Natick, MA
    Int J Sport Nutr Exerc Metab 23:470-9. 2013
    ..The observation that comprehensive cleaning of the skin surface negates sweat micromineral reductions during prolonged sweating raises the question of whether the reported HA effect is real or artifact of surface contamination...
  34. doi request reprint Hydration recommendations for sport 2008
    Scott J Montain
    Military Nutrition Division, U S Army Research Institute of Environmental Medicine, Natick, MA 01746, USA
    Curr Sports Med Rep 7:187-92. 2008
    ..It is culminated with practical strategies for drinking appropriately during physical activity...
  35. ncbi request reprint Field assessment and enhancement of cognitive performance: development of an ambulatory vigilance monitor
    Harris R Lieberman
    Military Nutrition Division, U S Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    Aviat Space Environ Med 78:B268-75. 2007
    ..This device acquires minute-by-minute information on an individual's physical activity and can distinguish sleep from waking, the most basic aspect of behavior...
  36. ncbi request reprint Daily body mass variability and stability in active men undergoing exercise-heat stress
    Samuel N Cheuvront
    US Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    Int J Sport Nutr Exerc Metab 14:532-40. 2004
    ..The data also suggest that daily BM is a sufficiently stable physiological parameter for potential daily fluid balance monitoring...
  37. pmc Energy requirements of US Army Special Operation Forces during military training
    Lee M Margolis
    Military Nutrition Division, United States Army Research Institute of Environmental Medicine, 15 Kansas Street, Building 42, Natick, MA 01760, USA
    Nutrients 6:1945-55. 2014
    ..Compared to the Military Dietary Reference Intakes for energy (13,598 kJ·day(-1)), these data are in agreement with previous reports that energy requirement for SOF Soldiers exceed that of the average soldier...
  38. doi request reprint Integrated physiological mechanisms of exercise performance, adaptation, and maladaptation to heat stress
    Michael N Sawka
    US Army Research Institute of Environmental Medicine, Natick, Massachusetts, USA
    Compr Physiol 1:1883-928. 2011
    ..Published 2011. This article is a U.S. Government work and is in the public domain in the USA...
  39. ncbi request reprint Effectiveness of revised fluid replacement guidelines for military training in hot weather
    Margaret A Kolka
    Thermal and Mountain Medicine Division, U S Army Research Institute of Environmental Medicine, Natick, MA 01760 5001, USA
    Aviat Space Environ Med 74:242-6. 2003
    ..S. Army fluid replacement guidelines (REV) with the old guidelines (OLD) on daily changes in serum sodium concentration (Na+) and body mass (BM) during Basic Combat Training at Fort Benning, GA during two successive summers...
  40. doi request reprint Effect of ambient temperature on marathon pacing is dependent on runner ability
    Matthew R Ely
    U S Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Med Sci Sports Exerc 40:1675-80. 2008
    ..Warmer weather negatively impacts the finishing time of slower marathon (42.2 km) runners more than faster runners. How warmer weather impacts runners' regulation of effort (pacing) leading to the decreased performance is poorly understood...
  41. ncbi request reprint Neither cloud cover nor low solar loads are associated with fast marathon performance
    Matthew R Ely
    US Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Med Sci Sports Exerc 39:2029-35. 2007
    ..This information can be found in anecdotal reports, authoritative reference books for runners, and scientific publications alike, but it lacks a comprehensive review...
  42. ncbi request reprint Seasonal variations in injury rates during US Army Basic Combat Training
    Joseph J Knapik
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Ann Occup Hyg 46:15-23. 2002
    ..This study examined seasonal differences in injury incidence during US Army Basic Combat Training, where physical activity was similar at all times of the year...
  43. ncbi request reprint Marathon performance in thermally stressing conditions
    Scott J Montain
    US Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760, USA
    Sports Med 37:320-3. 2007
    ..The recent generation of a nomogram that predicts changes in finishing time consequent to changes in weather conditions offers runners and coaches a tool for use in developing marathon race strategy...
  44. ncbi request reprint Plasma amino acid responses after consumption of beverages with varying protein type
    Tracey J Smith
    Military Nutrition Division, U S Army Research Institute of Environmental Medicine, Natick, MA, USA
    Int J Sport Nutr Exerc Metab 19:1-17. 2009
    ..To examine how different proteins in a carbohydrate-protein beverage affect postprandial amino acid (AA), glucose, and insulin responses...
  45. pmc High protein diet maintains glucose production during exercise-induced energy deficit: a controlled trial
    Tracey J Smith
    U, S, Army Research Institute of Environmental Medicine, Military Nutrition Division, Kansas Street, Building 42, Natick, MA 01760, USA
    Nutr Metab (Lond) 8:26. 2011
    ..abstract:..
  46. pmc Effects of a 7-day military training exercise on inflammatory biomarkers, serum hepcidin, and iron status
    James P McClung
    Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, MA, USA
    Nutr J 12:141. 2013
    ..The objective of this observational study was to characterize the effects of an occupational task, military training, on iron status, inflammation, and serum hepcidin...
  47. pmc A retrospective cohort study on the influence of UV index and race/ethnicity on risk of stress and lower limb fractures
    Scott J Montain
    U S Army Research Institute of Environmental Medicine, Bldg 42, Kansas St, Natick, MA 01760, USA
    BMC Musculoskelet Disord 14:135. 2013
    ..S. Army Basic Combat Training (BCT)...
  48. ncbi request reprint Physical performance responses during 72 h of military operational stress
    Bradley C Nindl
    Military Performance Division, U S Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    Med Sci Sports Exerc 34:1814-22. 2002
    ..To characterize the impact of prolonged work, underfeeding, and sleep deprivation (i.e., sustained operations; SUSOPS) on physical and occupational related performance during military operational stress...
  49. ncbi request reprint Diet and physical performance
    Scott J Montain
    Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Appetite 40:255-67. 2003
    ....
  50. doi request reprint Efficacy of eat-on-move ration for sustaining physical activity, reaction time, and mood
    Scott J Montain
    1Military Nutrition Division, USARIEM, Natick, MA 01760 5007, USA
    Med Sci Sports Exerc 40:1970-6. 2008
    ..Repeated carbohydrate feedings and caffeine have been shown to increase self-paced physical activity. Whether a field ration pack that promotes snacking of these items would enhance physical activity remains unclear...