Abstract
Significant scientific evidence documents the deleterious effects of hypohydration (reduced total body water) on endurance exercise performance; however, the influence of hypohydration on muscular strength, power and high-intensity endurance (maximal activities lasting >30 seconds but <2 minutes) is poorly understood due to the inconsistent results produced by previous investigations. Several subtle methodological choices that exacerbate or attenuate the apparent effects of hypohydration explain much of this variability. After accounting for these factors, hypohydration appears to consistently attenuate strength (by ≈2%), power (by ≈3%) and high-intensity endurance (by ∼10%), suggesting alterations in total body water affect some aspect of force generation. Unfortunately, the relationships between performance decrement and crucial variables such as mode, degree and rate of water loss remain unclear due to a lack of suitably uninfluenced data. The physiological demands of strength, power and high-intensity endurance couple with a lack of scientific support to argue against previous hypotheses that suggest alterations in cardiovascular, metabolic and/or buffering function represent the performance-reducing mechanism of hypohydration. On the other hand, hypohydration might directly affect some component of the neuromuscular system, but this possibility awaits thorough evaluation. A critical review of the available literature suggests hypohydration limits strength, power and highintensity endurance and, therefore, is an important factor to consider when attempting to maximise muscular performance in athletic, military and industrial settings.
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References
Boudou P, Fiet J, Laureaux C, et al. Changes in several plasma and urinary components in marathon runners. Ann Biol Clin 1987; 45: 37–45
Greenleaf JE, Sargent F. Voluntary dehydration in man. J Appl Physiol 1965; 20: 719–24
Hubbard RW, Sandick BL, Matthew WT, et al. Voluntary dehydration and alliesthesia for water. J Appl Physiol 1984; 57: 868–73
Pitts GC, Johnson RE, Consolazio FC. Work in the heat as affected by intake of water, salt and glucose. Am J Physiol 1944; 142: 253–9
Maughan RJ, Merson SJ, Broad NP, et al. Fluid and electrolyte intake and loss in elite soccer players during training. Int J Sport Nutr Exerc Metab 2004; 14: 333–46
Cheuvront SN, Haymes EM. Ad libitum fluid intakes and thermoregulatory responses of female distance runners in three environments. J Sports Sci 2001; 19: 845–54
Shirreffs SM. The importance of good hydration for work and exercise performance. Nutr Rev 2005; 63: S14–21
Sawka MN, Montain SJ, Latzka WA. Hydration effects on thermoregulation and performance in the heat. Comp Biochem Physiol A Mol Integr Physiol 2001; 128: 679–90
Cheuvront SN, Carter R, Sawka MN. Fluid balance and endurance performance. Curr Sports Med Rep 2003; 2: 202–8
Knuttgen HG, Kraemer WJ. Terminology and measurement in exercise performance. J Appl Sports Sci Res 1987; 1: 1–10
American College of Sports Medicine. Position stand on weight loss in wrestlers. Med Sci Sports Exerc 1976; 8: xi–xiii
American Medical Association. Wrestling and weight control. JAMA 1967; 201: 131–3
Horswill CA. Applied physiology of amateur wrestling. Sports Med 1992; 14: 114–43
Fogelholm M. Effects of bodyweight reduction on sports performance. Sports Med 1994; 18: 249–67
Horswill CA. Weight loss and weight cycling in amateur wrestlers: implications for performance and resting metabolic rate. Int J Sport Nutr 1993; 3: 245–60
Lopez R. Weight loss and diet in wrestling. Phys Educator 1980; 37: 131–9
Ribisl PM. When wrestlers shed pounds quickly. Phys Sportsmed 1974; 2: 30–5
Tipton CM, Oppliger RA. The Iowa Wrestling study: lessons for physicians. Iowa Med 1984; 74 (9): 381–5
Tipton CM. Physiologic problems associated with the ‘making of weight’. Am J Sports Med 1980; 8: 449–50
Hansen NC. Wrestling with ‘making weight’. Phys Sportsmed 1978; 6: 105–11
Keller HL, Tolly SE, Freedson PS. Weight loss in adolescent wrestlers. Pediatr Exerc Sci 1994; 6: 212–24
Yarrows SA. Weight loss through dehydration in amateur wrestlers. J Am Diet Assoc 1988; 88: 491–3
Oppliger RA, Case S, Horswill CA, et al. American College of Sports Medicine Position Stand: weight loss in wrestlers. Med Sci Sports Exerc 1996; 28: ix–xii
Coyle EF, Hamilton M. Fluid replacement during exercise:effects on physiological homeostasis and performance. In: Gisolfi CV, Lamb DR, editors. Perspectives in exercise science and sports medicine: fluid homeostasis during exercise. Carmel (IN): Cooper Publishing Group, 1990: 281–308
Sawka MN, Pandolf KB. Effects of body water loss on physiological function and exercise performance. In: Gisolfi CV, Lamb DR, editors. Perspectives in exercise science and sports medicine: fluid homeostasis during exercise. Carmel (IN): Cooper Publishing Group, 1990: 1–38
Casa DJ, Armstrong LE, Hillman SK, et al. National Athletic Trainers Association Position Statement: fluid replacement for athletes. J Athl Train 2000; 35: 212–24
McMurray RG, Proctor CR, Wilson WL. Effect of caloric deficit and dietary manipulation on aerobic and anaerobic exercise. Int J Sports Med 1991; 12: 167–72
Maughan RJ, Greenhaff PL, Leiper JB, et al. Diet composition and the performance of high-intensity exercise. J Sports Sci 1997; 15: 265–75
Rankin JW, Ocel JV, Craft LL. Effect of weight loss and refeeding diet composition on anaerobic performance in wrestlers. Med Sci Sports Exerc 1996; 28: 1292–9
Nielsen B, Kubica R, Bonnesen A, et al. Physical work capacity after dehydration and hyperthermia: a comparison of the effect of exercise versus passive heating and sauna and diuretic dehydration. Scand J Sports Sci 1981; 3: 2–10
Cheung SS, Sleivert GG. Multiple triggers for hyperthermic fatigue and exhaustion. Exerc Sport Sci Rev 2004; 32: 100–6
Thomas MM, Cheung SS, Elder GC, et al. Voluntary muscle activation is impaired by core temperature rather than local muscle temperature. J Appl Physiol 2006; 100: 1361–9
Evetovich TK, Boyd JC, Drake SM, et al. Effect of moderate dehydration on torque, electromyography, and mechanomyography. Muscle Nerve 2002; 26: 225–31
Greiwe JS, Staffey KS, Melrose DR, et al. Effects of dehydration on isometric muscular strength and endurance. Med Sci Sports Exerc 1998; 30: 284–8
Webster S, Rutt R, Weltman A. Physiological effects of a weight loss regimen practiced by college wrestlers. Med Sci Sports Exerc 1990; 22: 229–34
Yoshida T, Takanishi T, Nakai S, et al. The critical level of water deficit causing a decrease in human exercise performance: a practical field study. Eur J Appl Physiol 2002; 87: 529–34
Cheuvront SN, Carter R, Haymes EM, et al. No effect of moderate hypohydration or hyperthermia on anaerobic exercise performance. Med Sci Sports Exerc 2006; 38: 1093–7
Greenleaf JE, Matter M, Bosco JS, et al. Effects of hypohydration on work performance and tolerance to +GZ acceleration in man. Aerosp Med 1966; 37: 34–9
Caterisano A, Camaione DN, Murphy RT, et al. The effect of differential training on isokinetic muscular endurance during acute thermally induced hypohydration. Am J Sports Med 1988; 16: 269–73
Schoffstall JE, Branch JD, Leutholtz BC, et al. Effects of dehydration and rehydration on the one-repetition maximum bench press of weight-trained males. J Strength Cond Res 2001; 15: 102–8
Saltin B. Aerobic and anaerobic work capacity after dehydration. J Appl Physiol 1964; 19: 1114–8
Walsh RM, Noakes TD, Hawley JA, et al. Impaired high intensity cycling performance time at low levels of dehydration. Int J Sports Med 1994; 15: 392–8
Fritzsche RG, Switzer TW, Hodgkinson BJ, et al. Water and carbohydrate ingestion during prolonged exercise increase maximal neuromuscular power. J Appl Physiol 2000; 88: 730–7
Gutiérrez A, Mesa JLM, Ruiz JR, et al. Sauna-induced rapid weight loss decreases explosive power in women but not in men. Int J Sports Med 2003; 24: 518–22
Montain SJ, Smith SA, Mattot RP, et al. Hypohydration effects on skeletal muscle performance and metabolism: a 31P-MRS study. J Appl Physiol 1998; 84: 1889–94
Greenleaf JE, Prange EM, Averkin EG. Physical performance of women following heat-exercise hypohydration. J Appl Physiol 1967; 22: 55–60
Janse de Jonge XA. Effects of the menstrual cycle on exercise performance. Sports Med 2003; 33: 833–51
Stachenfeld NS, DiPietro L, Kokoszka CA, et al. Physiological variability of fluid-regulation hormones in young women. J Appl Physiol 1999; 86: 1092–6
Maresh CM, Judelson DA. Alterations in arginine vasopressin with exercise, environmental stress, and other modifying factors. In: Kraemer WJ, Rogol AD, editors. The Olympic encyclopaedia of sports medicine volume XI: the endocrine system in sport and exercise. Malden (MA): Blackwell Publishing, 2005: 487–98
Bosco JS, Terjung RL, Greenleaf JE. Effects of progressive hypohydration on maximal isometric muscular strength. J Sports Med Phys Fitness 1968; 8: 81–6
Watson G, Judelson DA, Armstrong LE, et al. Influence of diuretic-induced dehydration on competitive sprint and power performance. Med Sci Sports Exerc 2005; 37: 1168–74
Viitasalo JT, Kyrolainen H, Bosco C, et al. Effects of rapid weight reduction on force production and vertical jumping height. Int J Sports Med 1987; 8: 281–5
Hoffman JR, Stavsky H, Falk B. The effect of water restriction on anaerobic power and vertical jumping height in basketball players. Int J Sports Med 1995; 16: 214–8
Doscher N. The effects of rapid weight loss upon the performance of wrestlers and boxers, and upon the physical proficiency of college students. Res Q 1944; 15: 317–24
Fogelholm GM, Koskinen R, Laasko J, et al. Gradual and rapid weight loss: effects on nutrition and performance in male athletes. Med Sci Sports Exerc 1993; 25: 371–7
Jacobs I. The effects of thermal dehydration on performance of the wingate anaerobic test. Int J Sports Med 1980; 1: 21–4
Houston ME, Marrin DA, Green HJ, et al. The effect of rapid weight loss on physiological functions in wrestlers. Phys Sportsmed 1981; 9: 73–8
Klinzing JE, Karpowicz W. The effects of rapid weight loss and rehydration on a wrestling performance test. J Sports Med 1986; 26: 149–56
Wenos DL, Amato HK. Weight cycling alters muscular strength and endurance, ratings of perceived exertion, and total body water in college wrestlers. Percept Mot Skills 1998; 87: 975–8
Serfass RC, Stull GA, Alexander JF, et al. The effects of rapid weight loss and attempted rehydration on strength and endurance of the handgripping muscles in college wrestlers. Res Q Exerc Sport 1984; 55: 46–52
Smith SA, Williams JH, Ward CW, et al. Dehydration effects on repeated bouts of short-term, high-intensity exercise in college wrestlers [abstract]. Med Sci Sports Exerc 1991; 23: S67
Smith SM, Krauhs JM, Leach CS. Regulation of body fluid volume and electrolyte concentrations in spaceflight. Adv Space Biol Med 1997; 6: 123–65
Ferry M. Strategies for ensuring good hydration in the elderly. Nutr Rev 2005; 63: S22–9
Caldwell JE, Ahonen E, Nousiainen U. Differential effects of sauna-, diuretic-, and exercise-induced hypohydration. J Appl Physiol 1984; 57: 1018–23
Maresh CM, Whittlesey MJ, Armstrong LE, et al. Effect of hydration state on testosterone and cortisol responses to training-intensity exercise in collegiate runners. Int J Sports Med 2006; 27: 765–70
Casa DJ, Maresh CM, Armstrong LE, et al. Intravenous versus oral rehydration during a brief period: stress hormone responses to subsequent exhaustive exercise in the heat. Int J Sport Nutr Exerc Metab 2000; 10: 361–74
Hoffman JR, Maresh CM, Armstrong LE, et al. Effects of hydration state on plasma testosterone, cortisol and catecholamine concentrations before and during mild exercise at elevated temperature. Eur J Appl Physiol Occup Physiol 1994; 69: 294–300
Bijlani RL, Sharma KN. Effect of dehydration and a few regimes of rehydration on human performance. Indian J Physiol Pharmacol 1980; 24: 255–66
Moore BJ, King DS, Kesl L, et al. Effect of rapid dehydration and rehydration on work capacity and muscle metabolism during intense exercise in wrestlers [abstract]. Med Sci Sports Exerc 1992; 24: S95
Ahlman K, Karvonen MJ. Weight reduction by sweating in wrestlers and its effects on physical fitness. J Sports Med Phys Fitness 1961; 1: 58–62
Mnatzakanian PA, Vaccaro P. Effects of 4% dehydration and rehydration on hematological profiles, urinary profiles, and muscular endurance of college wrestlers [abstract]. Med Sci Sports Exerc 1982; 14: 117
Guastella P, Wygand J, Davy K, et al. The effects of rapid weight loss on anaerobic power in high school wrestlers [abstract]. Med Sci Sports Exerc 1988; 20: S2
Kraemer WJ, Fry AC, Rubin MR, et al. Physiological and performance responses to tournament wrestling. Med Sci Sports Exerc 2001; 33: 1367–78
Bell D, Bemben M, Trew JA, et al. The effects of rapid weight loss in college wrestlers. Aust J Sports Med Exerc Sci 1982; 14: 27–30
Ftaiti F, Grélot L, Coudreuse JM, et al. Combined effect of heat stress, dehydration and exercise on neuromuscular function in humans. Eur J Appl Physiol 2001; 84: 87–94
Ő öpik V, Pääsuke M, Sikku T, et al. Effect of rapid weight loss on metabolism and isokinetic performance capacity: a case study of two well trained wrestlers. J Sports Med Phys Fitness 1996; 36: 127–31
Singer RN, Weiss SA. Effects of weight reduction on selected anthropometric, physical, and performance measures of wrestlers. Res Q Exerc Sport 1968; 39: 361–9
Tuttle WW. The effect of weight loss by dehydration and the withholding of food on the physiologic responses of wrestlers. Res Q 1943; 14: 158–66
Vallier JM, Grego F, Basset F, et al. Effect of fluid ingestion on neuromuscular function during prolonged cycling exercise. Br J Sports Med 2005; 39: e17–22
King DS, Costill DL, Fink WJ, et al. Muscle metabolism during exercise in the heat in unacclimatized and acclimatized humans. J Appl Physiol 1985; 59: 1350–4
Bosco JS, Greenleaf JE, Bernauer EM, et al. Effects of acute dehydration and starvation on muscular strength and endurance. Acta Physiol Pol 1974; 25: 411–21
Bigard AX, Sanchez H, Claveyrolas G, et al. Effects of dehydration and rehydration on EMG changes during fatiguing contractions. Med Sci Sports Exerc 2001; 33: 1694–700
Torranin C, Smith DP, Byrd RJ. The effect of acute thermal dehydration and rapid rehydration on isometric and isotonic endurance. J Sports Med Phys Fitness 1979; 19: 1–9
Maughan RJ, Shirreffs SM, Leiper JB. Fluids and electrolytes during exercise. In: Garrett WE, Kirkendall DT, editors. Exercise and sport science. Philadelphia (PA): Lippincott Williams & Wilkins, 2000: 413–24
Ladell WSS. Effects on man of restricted water supply. Br Med Bull 1947; 5: 9–13
Gonzalez-Alonso J. Separate and combined influences of dehydration and hyperthermia on cardiovascular responses to exercise. Int J Sports Med 1998; 19 Suppl. 2: S111–4
Gonzalez-Alonso J, Mora-Rodriguez R, Below PR, et al. Dehydration reduces cardiac output and increases systemic and cutaneous vascular resistance during exercise. J Appl Physiol 1995; 79: 1487–96
Gonzalez-Alonso J, Calbet JA, Nielsen B. Muscle blood flow is reduced with dehydration during prolonged exercise in humans. J Physiol 1998; 513: 895–905
Gonzalez-Alonso J, Calbet JA, Nielsen B. Metabolic and ther thermodynamic responses to dehydration-induced reductions inmuscle blood flow in exercising humans. J Physiol 1999; 520: 577–89
Keller U, Szinnai G, Bilz S, et al. Effects of changes in hydration on protein, glucose and lipid metabolism in man: impact on health. Eur J Clin Nutr 2003; 57: S69–74
Ritz P, Salle A, Simard G, et al. Effects of changes in water compartments on physiology and metabolism. Eur J Clin Nutr 2003; 57: S2–5
Waldegger S, Busch GL, Kaba NK, et al. Effect of cellular hydration on protein metabolism. Miner Electrol Metab 1997; 23: 201–5
Armstrong LE, Costill DL, Fink WJ. Influence of diuretic-induced dehydration on competitive running performance. Med Sci Sports Exerc 1985; 17: 456–61
Horswill CA, Hickner RC, Scott JR, et al. Weight loss, dietary carbohydrate modifications, and high intensity, physical performance. Med Sci Sports Exerc 1990; 22: 470–6
Burge CM, Carey MF, Payne WR. Rowing performance, fluid balance, and metabolic function following dehydration and rehydration. Med Sci Sports Exerc 1993; 25: 1358–64
Saltin B. Circulatory responses to submaximal and maximal exercise after thermal dehydration. J Appl Physiol 1964; 19: 1125–34
Hickner RC, Horswill CA, Welker JM, et al. Test development for the study of physical performance in wrestlers following weight loss. Int J Sports Med 1991; 12: 557–62
Maffulli N. Making weight: a case study of two elite wrestlers. Br J Sports Med 1992; 26: 107–10
Febbraio MA, Lambert DL, Starkie RL, et al. Effect of epinephrine on muscle glycogenolysis during exercise in trained men. J Appl Physiol 1998; 84: 465–70
Costill DL, Coté R, Fink W. Muscle water and electrolytes following varied levels of dehydration in man. J Appl Physiol 1976; 40: 6–11
Costill DL, Coté R, Fink WJ, et al. Muscle water and electrolyte distribution during prolonged exercise. Int J Sports Med 1981; 2: 130–4
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No funding sources were used in the preparation of this manuscript. Douglas J. Casa serves on the Board of Advisors, has received grant funding and honoraria from Gatorade and has received honoraria from Camelbak, Inc. The authors wish to thank Dr Sinclair A. Smith for his exceptional helpfulness and Dr Barry A. Spiering for editorial contributions.
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Judelson, D.A., Maresh, C.M., Anderson, J.M. et al. Hydration and Muscular Performance. Sports Med 37, 907–921 (2007). https://doi.org/10.2165/00007256-200737100-00006
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DOI: https://doi.org/10.2165/00007256-200737100-00006