The following are practice questions, with a few old exam questions mixed in.  Studying only the material found on this page will not prepare you well for the exam.  However, from time to time I may use one of these questions on an exam (just for fun).  I am providing you with these questions to familiarize you with the types of questions that I give on exams.  An additional purpose of this page is to give you some practice with the calculations covered in lab.  NOTE: Not all answers are given in answer section.

 

Questions

  1. Calculate the Power output and the Work accomplished (in both J and Kcal) for the following:

 

    1. A 125 # female works out on a treadmill at 4mph and an 8% grade for 30 minutes.

 

 

 

 

 

    1. A well-trained 155# male cyclist works out on a monark cycle ergometer at 90 RPM with 3 kg of resistance for 10 minutes.

 

 

 

 

    1. A 140# female with nothing better to do steps up and down on a bench that is .33m high at a rate of 25 steps per minute for 5 minutes.

 

 

 

 

    1. A 125 # female exercises on a treadmill at 4mph with a 1% grade for 30 minutes.

 

 

 

    1. i) What is a reasonable combination of mph and percent grade if your subject would like to exercise at 150 Watts on a treadmill.  Your subject, a biology major, is a 160 pound, well trained, highly competitive, male distance runner. ii) If he performs this exercise for 30 minutes, how much work has he accomplished?

 

 

 

 

2.    Are all of the Power and work values above reasonable values?  Why or why not?

 

  1. You are working at a fitness facility, and you need to prescribe an exercise regimen for one of your patrons.  Your patron says that he likes cycling.  When determining the exercise intensity that he should work out at, how many RPM’s would you recommend that he maintain? (Remember it is your job to make sure that your patrons feel comfortable as possible during their exercise sessions) ___________________

 

  1. If a 175 pound male works out on a treadmill for 30 minutes.  Which of the following is a realistic (not too high or too low) amount of power for this 30 minute workout?  Circle one
    1. 10 Kcals
    2. 75 Watts

c.       10,000 Joules

    1. 150 Watts
    2. 90 Kcals
    3. 1,200 Watts
    4. 270,000 Joules
    5. 1,000,000 Joules
    6. a & b
    7. a, b, c, & d
    8. a, b, & d
    9. b & d
    10. four of the above are appropriate power outputs for this 30 min exercise
    11. None of the above

True or False questions about power output

  1.   T  /  F   A healthy college age male performing a graded exercise test on a cycle ergometer could be expected to have a maximal power output of around 300 Watts
  2.   T  /  F   A healthy college age female performing a graded exercise test on a cycle ergometer could be expected to have a maximal power output of around 300 Watts
  3.   T  /  F   An elite male cyclist may be able to maintain a power output of around 400 watts for at least an hour
  4.   T  /  F   During a Wingate test, some large, well trained subjects may be able to reach a power output of over 1000 Watts, although they can only maintain it for a few seconds at most.

10. You collected the following data during a steady state exercise bout.  This data was gathered from a one minute sample of gas collected into a meteorological balloon. The atmospheric conditions at the time of this test are also recorded here.  (a) What is this individuals absolute VO 2 at this time? (b) What is this individuals relative VO 2 ? (c) What is the Ventilatory equivalent for oxygen at this time  (d) what is the individual’s VE-BTPS at this time  Report everything in the correct units and conditions.

Subject weight =  180 lbs                                VE-ATPS = 51.15 L/min

Subject = 20yrs old                                         FEO2 = 16.49 %

Ambient pressure = 748 mmHg                     FECO2 = 4.07 %

Ambient Temperature = 26.5°C                     HR = 182 b/min

PH2O @ 26.5°C = 25.4 mmHg

 

 

 

11. Write the equation for the STPD correction factor.

12. Write the equation for absolute VO2; using information gathered with a dry gas meter and O2 and CO2 analyzers.  Indicate whether VO2 is reported in  ATPS, STPD, or BTPS.

13. Write the equation for the Nitrogen factor.

14.. What is the approximate relative VO2 at rest for a 20 year old, 135 pound female. You must show units to get full credit. ________________

15. The average relative VO2max for a college age male is ______________ You must show units to get full credit.

16. Write one of the two equations for RER.

17. Draw a graph of VO 2, VCO 2, RER, VE, and VE /VO 2 during a VO2max test, assuming that this test met all criteria for a valid VO2max test (label each line clearly and include possible numbers on the axes). 

18.  If given results from a VO2max test be able to tell if it was a valid test for VO2max test.

19.  The range for absolute VO 2max values in females is: (circle only one)

      a. 3-6 L/min

      b. 2-12 L/min

      c. 1.5-5 L/min

      d. 2-7 L/min

      e. 35-50 L/min

      f. 15-30 ml/kg*min

      g. 10-20 ml/kg*min

      h. 100-150 ml/kg*min

      i.  25-75 ml/kg*min

      j. 60-90 ml/kg*min

 

20. The alveoli extract ______ to ______ % of the air that is oxygen, this means that  we would expect FEO2 to be within the range of _______% to _______%.       

21.  What physiologic variable explains most of the difference in VO2max between a normal individual and in an elite athlete?

22. a) Write out the FICK equation.  Propranolol is a type of beta-blocker (beta-adrenergic receptor antagonsist).  Beta-blockers  tend to decrease HR and HRmax.  B) What affect would this drug have on VO2max?  Explain your answer using the FICK equation.  C) how does this relate to the affect of aging on VO2max.

23. When do we use the BTPS correction factor.

      a. When we are interested in knowing the volume of gas ventilated by the lungs

      b. When we want the volume reported to reflect the number of gas molecules present

      c. When reporting Pulmonary Ventilation

      d. when reporting Tidal Volume

      f. when reporting VCO 2

      g. when reporting VO 2

      h. a & b

      i. a, c, & d

      k. b, f, & g

24.  One MET = __________________ . (Must have both the number and the units correct to receive any credit)

25. Dr. Loucks is working out at a VO2 of about 35 ml/kg*min. a) How many METs is she working out at? B)  This would suggest that she is exercising at a metabolic rate that is approximately  _____________ times her resting metabolic rate.

26. How would absolute and relative VO2max compare to average human values in the following individuals.  Explain your answers using VO2-related equations we have used this quarter.

a.    dogs, whose heart size relative to their body mass is much larger than humans.  Also, dogs have max HRs of ~250-260bpm

b.    horses, whose spleens can constrict and increase hematocrit from 45 to 60% during maximal exercise

c.    cheetah’s, who tend to have a lot of fast twitch fibers and have a very high glycolytic capacity (lots of glycolytic enzymes).

d.    Heart failure patients

e.    Patients with pulmonary diseases

f.     Patients with anemia

g.    Couch potatoes (sedentary people like Dan Quayle, not vegetables)

h.    Small elite endurance athletes

i.      Large elite endurance atheletes

j.      An average individual wearing one of those nose wing things that holds the nostrils open

k.    Bed rested subjects

l.      A subject who is exercising at an altitude

 

27.  Calculate the BMI of a 30 year old female who weighs 65kg and is 171cm tall.  Her waist circumference is 63.5cm and her hip circumference is about 75cm.  She is approximately 26%body fat.

28.  Name five possible factors that could affect your results (sources of error) from any of the methods we used to estimate physical working capacity (e.g. YMCA test). Assume the test was performed correctly

  1. A 24 year old man comes into your lab for the determination of body composition by hydrostatic weighing.  The temperature of the water is 36.5°C, the density of the water at this temperature is .9947.  The subject weighs 175 pounds, is 6’1” tall (remember 2.54cm/inch), and has an FVC of 6.5L. You take four readings of the subject’s mass while he was completely submerged: 3.92, 3.97, 3.95, 3.96.  Using the following formulas determine a) Body density, b) Body fat %, and c) what would be his ideal body weight at 6% body fat? What is his BMI? Show all calculations

 

Males: RV = FVC x .24

Females: RV = FVC x .28

 

__________Wa                            

[(Wa  - Ww)/Dw]    -   (RV +.100L)       =  Body density (Db)

 

 

The Brozek equation for determining Body fat % is :

 

BF% =  [(4.57/ Db) - 4.142] x 100

 

 

30.  A 155 pound, 30 year old female exercises to exhaustion during the Bruce protocol. She completed 11 minutes of this protocol and she finished with a maximal heart rate of 192 beats per minute. What is her approximate aerobic capacity?

31.  Name the five major healt-related physical fitness attributes that we measured in lab.

32.  Name 5 possible sources of error when determining the % body fat when using hydrostatic weighing.

33.  Name the four major relationships that the PWC tests we used were based on for determining the subjects approximate VO2max.

34.  Which of these relationships is most important for determining the fitness index using the Harvard step test?  How about for the Bruce Protocol?

35.   What is the difference between static and dynamic flexibility?

36.  What are some limitations of the flexibility tests that we used in class?

37.  Describe/explain how the Astrand-Rhyming test is performed and how we estimate VO2max from its results.

38.  Explain how the shoulder flexion flexibility test is performed.

39.  Explain what skinfold sites we used in lab to determine a female's body composition.  Explain both the location and the angle of the fold. 

40.  Explain the exact procedures you would use to take a man's pectoral skinfold measurement.

41.  What does the following figure from the Basset and Howley article suggest about the concept of VO2max and/or about factors that may limit it (pick a figure and answer this question)

42.  Who was AV Hill and name a concept that he developed and that we have studied in lab.