LAST LECTURE WE TALKED ABOUT
DIETARY MINERALS IN SPORTS
TODAY WE WILL TALK ABOUT WATER
Lecture 15
WATER
OUTLINE OF LECTURE 15
WATER-SOME GENERAL COMMENTS
OUTLINE OF LECTURE 15
WATER-IDATME
WATER-FUNCTIONS
WATER-SOURCES
-DEFICIENCIES AND TOXICITIES
-WATER BALANCE
-INTERACTION WITH OTHER
NUTRIENTS AND IONS
WATER-SOME GENERAL COMMENTS
H2O
WATER- GENERAL COMMENTS
CONTINUED
Essential-we can make it but not nearly in
sufficient quantities
WATER-IDATME
INGESTION- oral, tube, intravenous
DIGESTION – not broken down
ABSORPTION-passive large and small intestine
TRANSPORT-free
7
WATER-IDATME
METABOLISM- already in correct form
water in = water out
-we can make water-Kreb’s
-synthesis
-we can consume water-catabolism
EXCRETION- sweat, urine, faeces, lungs
8
Water
functions/sources/deficiencies/toxicities
FUNCTIONS OF WATER
-carries nutrients and wasteproducts
-fluid and electrolyte balance
-ion balance
-maintains the structure of large molecules
e.g. proteins and glycogen
-participates in chemical reactions
-serves as solvent for nutrients
-temperature-regulation
-blood volume-regulation
-carries nutrients and wasteproducts
-fluid and electrolyte balance
-fluid balance in cells critical or cells burst
-water dissolves compounds into water creating
ions
-ions are charged particles eg Na+ andCl-
-must have equal number of charges in pool
eg Na+ and Cl- i.e. that cations must balance
the anions in terms of charge so that the net
charge is zero
-or get electrolyte imbalance
Fig. 12-4, p. 390
-fluid and electrolyte imbalance
-sweating
-diarrhea
-vomiting
all cause imbalance- fixed by food and
drink
Fig. 12-6, p. 391
-acid base balance (pH) ion balance
regarding carbon dioxide
buffers-bicarbonate and carbonic acid
lungs-carbon dioxide
kidneys-bicarbonate
Fig. 12-8, p. 393
Fig. 12-7, p. 392
-maintains the structure of large
molecules
e.g. proteins and glycogen
-participates in chemical reactions
-splitting- catabolism
-elimination-anabolism
-electron transport chain
-elimination and electron transport
chain-metabolic water
-participates in chemical reactions
-splitting diag
Fig. 6-3, p. 175
-participates in chemical reactions
Krebs- diagram
-serves as solvent for nutrients
-temperature-regulation
-blood volume-regulation
WATER BALANCE
water balance required for all this above
27
Table 12-3, p. 385
WATER- TO MEET FUNCTIONS AND WATER
BALANCE
Sources-foods, drinks, water
Table 12-2, p. 385
WATER TOXICITIES AND
DEFICIENCIES
water balance required to avoid deficiencies and
toxicities
water balance is water in=water out
i.e. IDATME
note water in-consumption and
metabolic water we make
water out- urine, faeces, sweat,
lungs, vomiting
and diarrhea
31
WATER TOXICITIES AND
DEFICIENCIES
Deficiency-loss of function
Toxicity-metabolic interference
32
WATER TOXICITIES AND
DEFICIENCIES
Deficiency-loss of function-elaboration
-electrolyte imbalance
33
Table 12-1, p. 384
WATER TOXICITIES AND
DEFICIENCIES
Toxicity-metabolic interference
-congestive heart failure
-blood pressure
-renal damage-further fluid imbalance
-electrolyte imbalance
-cells bursting
35
WATER TOXICITIES AND
DEFICIENCIES
Not likely if one is following an appropriate diet at all times
Proper diet ensures sufficient water
Water and the macronutrients they interact with frequently come in
a package
36
THUS THERE IS AN INTEGRATION
OF SOURCE, FUNCTION,
DEFICIENCY AND TOXICITY
37
INTEGRATION OF WATER WITH OTHER
NUTRIENTS AND IONS
CARBOHYDRATES
LIPIDS
PROTEINS
VITAMINS
MINERALS
OXYGEN
IONS
INTEGRATION OF WATER WITH OTHER
NUTRIENTS AND IONS
CARBOHYDRATES
-shape-function
-interaction with other nutrients in solution
-solvent including water soluble fibre
-idatme
-wwfq
INTEGRATION OF WATER WITH OTHER
NUTRIENTS AND IONS
LIPIDS
-interaction with other nutrients in solution
-idatme
-wwfq
INTEGRATION OF WATER WITH OTHER
NUTRIENTS AND IONS
PROTEINS
-shape-function
-interaction with other nutrients in solution
-idatme
-wwfq
INTEGRATION OF WATER WITH OTHER
NUTRIENTS AND IONS
VITAMINS
-solvent-water soluble vitamins
-interaction with other nutrients in solution
-idatme
-wwfq
INTEGRATION OF WATER WITH OTHER
NUTRIENTS AND IONS
MINERALS
-solvent
-interaction with other nutrients in solution
-idatme
-wwfq
INTEGRATION OF WATER WITH OTHER
NUTRIENTS AND IONS
OXYGEN
-solvent
-idatme
-wwq
INTEGRATION OF WATER WITH OTHER
NUTRIENTS AND IONS
IONS
-solvent
-idatme
-wwfq- form including minerals
-pH
Fig. 12-7, p. 392
Fig. 12-8, p. 393
OUTLINE OF LECTURE 15
WATER-SOME GENERAL COMMENTS
OUTLINE OF LECTURE 15
WATER-IDATME
WATER-FUNCTIONS
WATER-SOURCES
-DEFICIENCIES AND TOXICITIES
-WATER BALANCE
-INTERACTION WITH OTHER
NUTRIENTS AND IONS
NEXT LECTURE – DIETARY
WATER IN SPORTS