Dependent Variable respiratory volumes Independent Variable level of physical activity [resting or exercising] Controlled Variables sex age height Which respiratory volume was calculated? What was the purpose of the nose clip?
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8 Complete PowerPhys Experiment: Respiratory Volumes. 9 Complete Biopac Laboratory Guide Experiment: Effect of Exercise on Lung Volumes and Capacities. Conclusion: In one or two sentences, state how exercise affects lung volumes and capacities. TABLE 33.5 Calculated Lung Volumes and Capacities. VOLUME OR CAPACITY | EQUATION | VALUE. IRV, IC, RV, FRC, TLC. TABLE 33.6 Equations for Calculating Residual Volume. GENDER | AGE | EQUATION TO PREDICT RV (liters). Male or female | <19 | RV = (0.029 x height in inches) - 0.9192. Female | 19-99 | RV = (0.0813 x height in inches) + (0.009 x age in years) - 3.9. Male | 19-99 | RV = (0.0686 x height in inches) + (0.017 x age in years) - 3.45. 1. Polgar G, Promadhat V: Pulmonary Function Testing in Children. Techniques and Standards. Philadelphia: WB Saunders Co., 1971. 2. Goldman HI, Becklake MR: Respiratory function tests—normal values at median altitudes and the prediction of normal results. Am Rev Tuberc 79:457–467, 1959.
Madhur L.
The volume of oxygen consumed (in liters per minute) while a person is at rest and while a person is exercising (running on a treadmill) were both measured for 50 subjects. The goal is to determine if the volume of oxygen consumed during aerobic exercise can be estimated from the amount consumed at rest. The results are plotted below: Volume Consumed at Rest In this study, the explanatory variable is the instrument used to measure the volume of oxygen consumed, the volume of oxygen consumed at rest, and the volume of oxygen consumed while running. Either variable can be considered the response.
Shaiju T.
Table 1: Subject Data Subject Data: Sex, Height, Age, Activity Level (low, medium, high) Vital Capacity: Balloon Diameter (cm): Trial 1, Trial 2, Trial 3, AVERAGE Volume (cm3) (from graph) Volume from Calculator (l) Subject 1: M, 5'11, 17, high, 16.9, 17.1, 18.3, 17.4333, 2700 Subject 2: F, 5'1, 16, low, 13.9, 13.9, 15.7, 14.5, 1600 Subject 3: M, 5'9, 16, low, 14.3, 16.7, 14.0, 15, 1700 Subject 4: F, 5'7, 16, medium, 15.1, 17.1, 15.4, 15.86666667, 2000 ANALYSIS 1. What is the difference between tidal volume and vital capacity? Suggest a way you could measure a person's tidal volume. (2 mks) 2. Compare your subjects' vital capacity and variables listed (height, activity level, weight, sex...etc). Based on your limited data, which factors had the GREATEST impact on the vital capacity. Include data from your table to back up your claim. (3 mks) 3. What variables of your test subjects were necessary to input into the calculator? Which variables seem to have the LEAST effect on a person's vital capacity? (1 mk) 4. Research: How might an athlete's vital capacity compare to a non-athlete? Explain your reasoning. (2 mks) 5. Research: Why do males and females have different lung volumes? (2 mks) 6. Do you think the person with the greatest vital capacity can hold their breath longer than those with a lower vital capacity? Consider the difference between internal respiration and external respiration and explain why lung capacity may not have a great effect on the length of time you can hold your breath. (2 mks) 7. State the possible sources of error in this investigation. (2 marks)
Adi S.
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