Chapter 15 Acclimation to Heat –ACSM – 10 days with daily exposure of 2-4 hours. –Heat Related Illnesses Cramps Exhaustion Stroke (SLUDE) –ACSM – If change in pre/post exercise wt equals 2% - Allow 24 hr for rehydration

Chapter 15 Electrolyte Imbalance –Hyponatremia (ACSM 9.5L day) How heat is Regulated –Hypothalamus & Pituitary Gland – Adrenal Cortex (Produces Aldosterone) –Methods of Heat Loss Radiation Conduction Convection Evaporation (ceases when humidity reaches 75%) **Each liter of water evaporated equals 580 kcal

Chapter 15 Exercise In Altitude – ft. lessens VO2 max by 3.5% (Each additional 1000 feet equals ) P02 may drop from 100 to 70’s; ft may drop to 25mmHg Page 449 –Acute altitude over 14,000 feet will lessen your VO2max by 32% Page 451 –Increase in bloods oxygen carrying abilities

Chapter 15 Polycythemia –Erythropoietin –Hematocrit –Hemoglobin –Myoglobin

Chapter 15 Acute Mountain Sickness (10,000) High-Altitude Pulmonary Edema – 12 –96 hours High-Altitude Cerebral Edema Breath Holding –With and without hyperventilation