Institute of Medicine. Magnesium Res. J. $ #," '.0,)7(44418=9'.<2432�� C 2! This volume examines the current state of knowledge concerning the influence of a hot environment on nutrient requirements of military personnel. Invest.
x�b```f``|������� ̀ �l�@qnk���rQ��F�R��L�w��h�i:x�IB-���e��\&�z��S 8�����b���%�#�sQ�����B��W9,�������e���G;E��r-��!�L �@�`���2n.Wm��&����W�*�ᣗIB>s�Z��wi$����3Q� ���D�i�̍)\'��Ʒ4��3q����]�j�4lTbZ[����"Z?O�����q�9�sН)��h���-\�F[�f[T�l~ֹ*`ic�e_����d9��� 1990 Zinc toxicity.
DR. NESHEIM: Thank you, Carl. Lab. During the study, subjects were given a military operational. Consolazio et al. Such heat treatment can occur during the drying of protein supplements of plant and animal origin. J. Clin. Anim Sci J. For example, Costill et al. Situational Influences on Food Intake, Part III: U.S. Army Presentations: A Reevaluation of Sodium Requirements for Work in the Heat, 12. The most thorough examination of sweat mineral changes associated with heat acclimation is from a series of studies (10–12) that observed a decline in the losses of sweat J. Appl. Keen, and J.H. Chem. (1983) reported that plasma copper concentrations decreased in male and female subjects following exposure to hot temperatures in a sauna bath.
1986 Antioxidant properties of the proteins caeruloplasmin, albumin, and transferrin. Soc. Redistribution of serum magnesium into red blood cells (Abbasciano et al., 1988; Deuster et al., 1987; Lukaski et al., 1983) and into adipocytes (Franz et al., 1985) with exercise has also been reported. Brune, M., B. Magnusson, H. Petsson, and L. Hallberg 1986 Iron losses in sweat. There are considerable data demonstrating an effect of exercise on magnesium metabolism.
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284 of U.S. Army no. Karlson, J., R. Diamant, and B. Saltin 1968 Lactic dehydrogenase activity in muscle after prolonged exercise in man. Gutteridge, J.M.C. Fed. 2, F. Katch ed. Phys. Although the loss of iron via sweat is not normally considered to be a major explanation for the iron depletion, sweat iron concentrations can range from 0.1 to 0.3 mg per liter for men and up to 0.4 mg per liter for women (Aruoma et al., 1988; Brune et al., 1986; Lamanca et al., 1988; Paulev et al., 1983). Changes in the distribution of minerals in skim goats' milk by high pressure (400 MPa) and/or heat (85 degrees C for 30 min) treatment have been studied. Biochem.
Matoush, R.A. Nelson, R.S. Phys. Hughes, and P. Urone 1964 Trace mineral losses in sweat. Pp. Am.
Biol. Am. Stern, M.E. Responses of Soldiers to 4-gram and 8-gram NaCl Diets During 10 Days of Heat Acclimation, 13. Assoc. Daly, R.J. Moffatt, and M.F. Oh 1978 Nutritional and environmental factors affecting metallothionein levels. The potential interaction between prolonged exposure to high temperatures and vigorous activity with regard to iron status, and an individual's ability to thermoregulate and recover from injury is an area that needs further clarification.
Chromium deficiency per se has not been accepted as a health problem in endurance athletes. Gardner, G.W., V.R. 1984 Role of magnesium and potassium in the pathogenesis of atherosclerosis. Reprod Nutr Dev. Jenkins, R.R. In addition, the interactive effect of prolonged exposure to high temperatures and intense exercise needs to be defined. With the exception of the data by Consolazio, there are no current reports suggesting that selenium requirements are higher in hot environments compared to temperate regions. Although there is considerable debate about the value of plasma zinc in diagnosing zinc deficiency, most investigators agree that prolonged low plasma zinc concentrations are indicative of suboptimal zinc status. 27:77–86.
1988 Free radical chemistry. Stendig-Lindberg, G., Y. Shapiro, Y. Epstein, E. Galun, E. Schonberger, E. Graff, and W.E.C. Nutr.
However, it seems prudent, given the above findings, to monitor chromium status of individuals engaged in strenuous activity for prolonged periods of time, particularly if the activity is performed in a hot. 03 (Biochemistry), U.S. Army Medical Research and Nutrition Laboratory, Fitzsimmons General Hospital, Denver, Colo. Costill, D.L., R. Cote, and W. Fink 1976 Muscle water and electrolytes following varied levels of dehydration in man. 39:402–409. Prasad, A.S., G.J. Sports Exerc. Anderson, R.A., M.M. This suggestion was based on the observation that a significant number of endurance runners were characterized by low serum zinc concentrations even when tested prior to an exercise bout.
They reported a marked increase in plasma zinc concentrations in dogs following short bouts of intense exercise. Nickerson, H.J., M. Holubets, A.D. Tripp, and W.E. Gershwin, P. Lowney, L.S. Rev. Deuster 1988 Exercise effects on chromium excretion of trained and untrained men consuming a constant diet. 139:1115–1119.
21:643–648. 0000001126 00000 n King, J.C., and J.R. Turnlund 1989 Human zinc requirements. NLM Rev. 254:4040–4045. Couzy, F., P. Lafargue, and C.Y. Exposure to extremes in temperature by itself can result in a stimulation of the acute-phase response with subsequent changes in zinc metabolism (Sugawara et al., 1983; Uhari et al., 1983); sweat losses of zinc can range from 0.5 to 1 mg per liter (Aruoma et al., 1988; Van Rij et al., 1986). Med. Child. Dressendorfer, R.H., and R. Sockolov 1980 Hypoxincemia in runners. Percival, S.S., and E.D. J. Nutr. (1991) reported that plasma selenium concentrations decreased in men exposed to a 5-day rigorous training program conducted by the U.S. Navy, despite an increase in dietary selenium intake during the program. 28:251–253. That was very interesting and challenging and indeed reports some of the work that needs to be done. Dinarello, C.A. The phenomenon of sports anemia has been associated with increased erythrocyte destruction, depressed iron absorption, increased sweat loss of iron, and gastrointestinal blood loss (Dressendorfer et al., 1991; Ehn et al., 1980; Frederickson et al., 1983; Paulev et al., 1983; Puhl et al., 1981; Stewart et al., 1984). Unfortunately, you can't get animals much more deficient and get meaningful data. Res. J. Appl. 2009 Mar;60(2):153-64. doi: 10.1080/09637480701625580. Laires, M.J., F. Alves, and M.J. Halpern 1988 Changes in serum and erythrocyte magnesium and blood lipids after distance swimming. Gardner, and R.J. Barnard 1981 Elevation of hemoglobin and work tolerance in iron-deficient subjects. Acute, strenuous exercise has been reported by several investigators to result in a marked increase in plasma copper concentrations, which has been attributed to an increase in plasma ceruloplasmin concentrations (Haralambie, 1975; Ohno et al., 1984; Olha et al., 1982). Pp. Eur.
Investigation of the effect of heat on the clay minerals illite and montmorillonite by Grim, Ralph E. (Ralph Early), 1902- ; Bradley, William Frank, 1908- joint author ration, the meal, ready-to-eat (MRE), as their only food. The typical reduction in plasma magnesium following intense exercise is on the order of 10 percent. Sports Med. J. 8:97–100. 144): 1–39. 6:327–336. Lowe, E.W. (1990) reported no influence of training on plasma copper concentrations in elite swimmers, and Singh et al. J. Appl. ���� JFIF � � �� @(#) Generated by TJ++ �� C Pennington, J.A.T., D.B.
Roberts 1988 The effect of zinc supplements on lipoproteins and copper status.
Bothwell, W.R. Bezwoda, F. Kramer, and J. Hattingh 1987 Hematologic, iron-related, and acute-phase protein responses to sustained strenuous exercise. tained exercise in a hot environment would be predicted to have a negative impact on an individual's zinc balance. Rubenni, M.A.
It has been shown that ceruloplasmin copper can be incorporated into cytochrome oxidase, and cell receptor sites for ceruloplasmin have been identified (Stevens et al., 1984). J. What really gets me is when the patient is taking a drug that can't really be abused, such as thyroid medication, and yet the 90-day limitation and inability to refill until down to about 10 pills or fewer means we cannot control for heat damage in shipments. Costa RG, Beltrão Filho EM, de Sousa S, da Cruz GR, Queiroga Rde C, da Cruz EN. Eur. J. Clin. Deuster 1991 Biochemical indices of selected trace minerals in men: Effect of stress. (1990) reported that plasma copper concentrations were lower in long-distance runners than in sedentary controls, and Dowdy and Burt (1980) reported that plasma copper concentrations and ceruloplasmin activity decreased in competitive swimmers over a 6-month period. Trace Element Res. Klevay, and D.B. Int J Food Sci Nutr. (1963) who found that, under normal conditions, sweat loss accounted for over 12 percent of the total daily excretion of magnesium in men working in temperatures of 49° to 50°C.
(1964) reported an average loss of 340 µg of selenium in sweat over an 8-hour period in men maintained at a temperature of 37.8°C. Pories 1986 Changes in zinc metabolism following exercise in human subjects. Lab. Nutr. Hambidge, K.M. Effects of high pressure and heat treatment on the mineral balance of goats' milk. Register for a free account to start saving and receiving special member only perks. J. Clin. Get the latest public health information from CDC: https://www.coronavirus.gov. Biochem. xref Sign up for email notifications and we'll let you know about new publications in your areas of interest when they're released. Brotherhood, J., B. Brozovic, and L.G.C.
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The magnitude of the increase in plasma zinc concentration with exercise is such that it cannot be due to hemoconcentration (Hetland et al., 1975; Lukaski et al., 1984); rather it is thought to reflect the result of muscle leakage of zinc into the extracellular fluid following muscle breakdown (Karlson et al., 1968).
Ohno, H., T. Yahata, F. Hirata, K. Yamamura, R. Doi, M. Harada, and N. Taniguchi 1984 Changes in dopamine-b-hydroxylase, and copper, and catecholamine concentrations in human plasma with physical exercise.
Nutr. Waller 1988 Sweat iron loss of male and female runners during exercise. J. Nutr. Harding, and J.E. White, and R. Green 1983 Transitory effects of moderate exercise are not influenced by iron supplementation.
Acta 869:119–127.
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