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riboflavin and, 142

and sweating, 91, 95

and thermoregulatory response, 15, 16, 55, 70, 92

Age

and aerobic fitness, 14

and body water, 87

and fluid requirements, 14-15, 92, 93

and heat tolerance, 14-15

and sweat rates, 14-15, 16, 91-92, 93, 95

and thermoregulation, 91-92

and vitamin E, 167

Aldosterone biosynthesis and release, 260, 263, 264-265, 268, 272 273

Amino acid metabolism, 143, 147

Aminotransaminase reactions, 144

Anemia

folate deficiency and, 147

pernicious, 146

''sports'' vs iron deficiency, 23, 120-121

Anorexia nervosa, 203

Antacids, 81

Antioxidants, 21, 24, 46, 51, 118, 126, 149, 151, 154, 159

fatty acid, 156

multivitamin supplement, 155

Appetite, 109

acclimatization and, 19-20, 107, 109

and body weight set point, 192-193

brown adipose tissue thermogenesis and, 192, 193

defined, 26, 188-189, 299

environmental temperature and, 189-190, 199-207

fever and, 203

food temperature and, 204-205

humidity and, 196

internal mechanisms in, 297-299

light and, 205

ration components and, 46

research needs on, 207-208

seasonal changes in, 30, 202-203

skin temperature and, 212

stress and, 29, 197

and thermic effect of food, 199

Arginine-vasopressin, 260, 263, 267, 268, 269-270

Army Regulations (AR)

40-25 (1985), 5-6, 307-327

40-250 Nutrition (1947), 5

Ascorbic acid, see Vitamin C

Aspirin, 76, 203

B

B complex vitamins

deficiencies, 138, 147, 149

and energy metabolism, 20-21, 141, 159

functions of, 138-139

and physical performance, 147-148

MRDAs vs RDAs, 20-21

recommendations, 149, 159

requirements for, 159

supplementation, 148-149

sweat losses of, 48-49, 148, 159

see also individual B vitamins

Beriberi, 139

Beta-carotene, 154, 155, 160

Beta-endorphin levels, 80

Biotin

deficiencies, 147

functions, 147

MRDAs vs RDAs, 10

Blood flow/circulation

age and, 15

exercise in the heat and, 65, 68-70, 80

fluid losses and, 12

and gastrointestinal functioning, 77

and heat transfer, 6-7, 12, 68-70

hepatic, 71

skeletal muscle metabolism and, 65

skin, 68-70

see also Plasma/serum

Body fat

and environmental temperature, 190-191

and sweating, 94-95

Body mass, on NaCl diets during acclimatization, 250

Body temperature

age and, 15

and appetite, 201, 203, 212-13

body weight and, 47

cephalic, 201, 298-299



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