Use of fat compared to use of carbohydrates for energy:
An intensity under 25% of maximum oxygen consumption will result is much less aerobic conditioning benefit but still utilize fat oxidation as the body’s main source of energy. Aerobic exercise intensity of 25% to 65% of oxygen consumption will increase the amount of aerobic oxidative energy production by both carbohydrates and fat. However, fat burning potential is greatest in moderate intensity aerobic exercise done at a rate of 65% of the maximum oxygen consumption. This intensity maximizes aerobic oxidative energy production for the body (85).
Starting exercise in chronically ill patients:
Exercise guidance in patients with serious illnesses and for those with specific medical problems: The most respected credible source available for exercise prescription is Thompson et al, American College of Sports Medicine’s (ACSM’s) Guidelines for Exercise Testing and Prescription (26). This source should be consulted for advice when recommending exercise to patients with specific serious illnesses. Another valuable source is Gauer, RL and O’Connor, FG with Department of Family Medicine Uniformed Services University of the Health Sciences, “How To Write An Exercise Prescription.” (31) This can be accessed at: http://www.move.va.gov/download/Resources/CHPPM_How_To_Write_And_Exercise_Prescription.pdf
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