In the ECG shown on the following page, which of the following conduction abnormalities is indicated?
A. RBBB.
B. Third-degree AV block.
C. First-degree AV block.
D. Mobitz I.
Slow conduction in the A V node is associated with
A. Prolonged PR interval.
B. Prolonged QRS interval.
C. Shortened QT interval.
D. Elevated ST segment.
Examine the six extremity leads shown in the figure below. What is the appropriate mean QRS axis?
A. -30?
B. 60?
C. 90?
D. 120? (From Goldberger AL: Clinical Electrocardiography: A Simplified Approach, 6th ed. St Louis, Mosby, 1999, p 55.)
A 35-year-old woman reduces her caloric intake by 1,200 kcal per week. How much weight will she lose in 26 weeks?
A. 8.9 pounds.
B. 12.0 pounds.
C. 26.0 pounds.
D. 34.3 pounds.
How much weight will the woman (from question 22) lose in 26 weeks if she integrates a 1-mile walk, taken three times per week, into her weight loss program?
A. 3 pounds.
B. 6 pounds.
C. 11 pounds.
D. 15 pounds.
At what running speed would you set a level treadmill at to elicit an Vo2 of 40 mL . kg-1 . min-1?
A. 5.0 mph
B. 6.8 mph
C. 18.25m . min-1
D. 18.25 mph
If a healthy young man exercises at an intensity of 45 mL. kg-1.min -1 three times per week for 45 minutes each session, how long would it take him to lose 10 pounds of fat?
A. 4 weeks.
B. 7.14 weeks.
C. 16.5 weeks.
D. 19 weeks.
A 143-pound woman regularly exercises on a treadmill at a speed of 5.5 mph and a 2% elevation. How much weight will she lose weekly if she exercises for a duration of 45 minutes per session, with a frequency of three sessions per week?
A. 1.5 kg.
B. 2.07 kg.
C. 0.25 pounds.
D. 0.45 pounds.
What resistance would you set a cycle ergometer at if your 80-kg client needs to train at 6 METs? Assume a 50 rpm cycling cadence.
A. 1.5 kg.
B. 2.07 kg.
C. 0.25 pounds.
D. 0.45 pounds.
What stepping rate should a client use if she wishes to exercise at 5 METs? The step box is 6 inches high, and the client weighs 50 kg.
A. 12 steps per minute.
B. 32 steps per minute.
C. 25 steps per minute.
D. 96 steps per minute.
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