1. To stretch the quadriceps using the PNF technique,

a.) contract the quadriceps to activate the GTO, causing areflex contraction of the hamstrings; then stretch thequadriceps.

b.) contract the quadriceps to activate the GTO, causing areflex relaxation of the quadriceps; then stretch thequadriceps.

c.) contract the quadriceps to activate the muscle spindle,causing a reflex relaxation of the quadriceps; then stretch thequadriceps.

d.) stretch the quadriceps ballistically to activate the musclespindle, causing a reflex relaxation of the quadriceps for agreater stretch.

2. Vital capacity is the sum of which volumes or capacities?

a.) Inspiratory Capacity + Expiratory Reserve Volume

b.) Maximal Breathing Capacity + Residual Volume

c.) Tidal volume + Inspiratory Reserve Volume

d.) Tidal Volume + Expiratory Reserve Volume + ResidualVolume

3. If the predicted residual volume (e.g., calculated from ageand height) is less than the actual residual volume (e.g.,determined by oxygen dilution), what effect will this have on bodyfat percentage obtained by hydrostatic weighing?

Link to Body Density Formula:  

Db formula - hydrostatic weighing.docx

If the link doesn't open, the formula for Db is:

Numerator: Body Weight

Denominator: { [Body Weight - Submerged Weight]/Density ofWater} - RV + 0.1 L

a.) Body fat percentage will be overestimated.

b.) No effect on calculated body fat percentage

c.) Body fat percentage will be underestimated.

d.) Body fat percentage will be overestimated in women andunderestimated in men.