EQN 3050 Lecture Notes - Lecture 12: Exercise Intensity, Vo2 Max, Glycogenolysis
18 Apr 2018
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Buffers (proteins, the bicarbonate system, phosphate, carnosine) reduction. Transport protons out of the cell two carriers facilitating the efflux of protons. Monocarboxylate transporters (major role: simultaneously transport one proton and one lactate anion, skeletal (cid:373)uscle co(cid:374)te(cid:374)t of mct(cid:859)s i(cid:374)creases (cid:449)ith trai(cid:374)i(cid:374)g. Low muscle glycogen content correlates with reduction in exercise tolerance: hyperthermia. Enzyme systems malfunction at supraoptimal temperatures: dehydration. Impairs oxygen and substrate supply to skeletal muscle: electrolyte depletion. Electrolyte imbalances: na, cl, k, mg imbalance. Impairs distribution of electrical charge across cell membranes: k imbalance. Impairs perfusion of muscles with blood: ca, mg imbalance. Fires at the same rate as the heart = synchronous diaphragmatic flutter (thumps) Effects of temperature/humidity: exercise causes a decline in plasma volume. Increase lactate production: cold, dry conditions = -25c. Increased metabolic rate 70% increase vs. thermoneutral horses. Effects of a warm-up increases core body temperature by 1c.
