PE753 Test 2 Review

What glycemic index (GI) rating is considered high? 

• Less than 55

• 56–69

• 70 or greater

• 40-50

Hydrostatic weighing provides a measure of 

• body mass

• body volume

• residual lung volume

• body fat distribution

All residual lipid-free chemicals and tissue, including water, muscle, bone, connective tissue, and internal organs, correspond to _______________

• fat-free mass

• minimal body mass

• fat mass

• relative body fat

An increase in fat-free body mass will generally have no effect on the resting metabolic rate.

• True

• False

Three main factors that determine total daily energy expenditure are:

• body composition, BMR, and hormone level

• Thermogenic effect of food, body composition, and resting metabolic rate

• resting metabolic rate, thermogenic effect of food, and energy expended during physical activity and in recovery

• resting and exercise hormone levels, environmental conditions, and body composition

The conduction zone:

• warms, humidifies and filters inspired air.

• makes up the anatomical dead space of the respiratory system

• is vulnerable to freezing if the ambient temperature is below 0⁰ C.

• A & B are correct

During heavy exercise, ventilation may be stimulated by:

• higher brain centers

• a decrease in pH

• An increase in CO2

• All of the above

The pattern of response to aerobic submaximal and incremental exercise to maximum is similar between children/adolescent and young/middle aged adults except: 

• children exhibit a higher breathing frequency and lower tidal volume at any given submaximal load than young or middle ages adults

• children exhibit a lower breathing frequency at any given submaximal load than young or middle ages adults

• none of the above 

• A & B

For individuals of average fitness, maximal exercise does not tax pulmonary ventilation to a point that limits optimal alveolar gas exchange and arterial saturation.

• True

• False

Ventilatory thresholds (VTs) can be used to predict performance, where the higher the workload where the breaks occur, the greater the intensity of activity that can be sustained, and thus greater performance.

• True

• False