Mr. Smith is a 36-year-old, African American male, who works as a construction worker.
Mr. Smith is a 36-year-old, African American male, who works as a construction worker. He is not participating in any exercise program because he is tired after working in the hot sun all day. At work, he is getting more than 30 min of physical activity 5 days/week and has done so for the past year. His father died of a heart attack at the age of 40 years. Now that he is approaching the age of 40 years, he wants to take steps to improve his health.
Mr. Smith is interested in a CrossFit program that he has heard about at work. He states that he would like to start that program but wants to make sure he is fit enough to begin the high-intensity program. Mr. Smith takes a beta-blocker for hypertension. He is a nonsmoker and otherwise healthy.
On today’s visit, his HRrest was 65 bpm and his resting BP was 140/84 mm Hg. Mr. Smith mentioned that he forgot to take his beta-blocker today. He weighs 202 lb and is 72 in. tall, and his body fat is 22%. His fasting blood lipid profile results were as follows; HDL cholesterol = 46 mg/dL; LDL = 140 mg/dL; triglycerides = 220 mg/dL. Fasting blood glucose result was 80 mg/dL.
Mr. Smith completed a max Bruce treadmill exercise test in 11 min and 55 s (estimated V̇O2max = 45.5 mL/kg/min). His maximal heart rate reached 185 bpm, and his BP was 186/98 mm Hg. Other health-related physical fitness parameters included 21 push-ups.
Question A
Does Mr. Smith need medical clearance to participate in moderate-intensity exercise?
Yes
No
Conduct a CVD risk factor assessment using the information given in the case study. Select all the risk factors Mr. Smith has.
Age
Family history
Cigarette smoking
Physical inactivity
BMI/waist circumference
Blood pressure
Lipids
Blood glucose
HDL-C (negative risk factor)
QUESTION B
You want to prescribe Mr. Smith a target V̇O2 equal to 60% V̇O2R. What is his target V̇O2?
28.7 mL/kg/min
29.4 mL/kg/min
31.9 mL/kg/min
34.3 mL/kg/min
Question C.
What is Mr. Smith’s caloric expenditure if he exercises at 60% O2R for 30 minutes?
13.2 kcal
396 kcal
454 kcal
560 kcal
QUESTION D.
You suggest that Mr. Smith should maintain his HR between 55% and 65% HRR during his workout. What would his HR range be for this prescribed intensity?
110-125 bpm
125-131 bpm
131-143 bpm
143-155 bpm
What is the total number of risk factors Mr. Smith has?
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