7. Tra nsfer the values of the means from Tables 2 and 3 into Table 4 below Then

Question

7. Tra nsfer the values of the means from Tables 2 and 3 into Table 4 below Then calculate the amo unt each portion of the ECG changed with exercise. Table 4: Comparing ECG Before and After Exercise Time in milliseconds (ms). Exerciso Average Change P wave 70 to 1800 R interval 120 to 200 4 2. P-R se QRS complex60-120 ST segment -20 -11e Q.T interval 320 to 380 2-2 64 80 l 2 3 512 T wave 100-250 2 U 240 Data Analysis Questions 8. Give the equation the computer uses to calculate BPM using A1T bon beginning 9. Descibe the relationship betwen AT and BPM.For instance, f kt gets shorter what happens to BPM? onupu 10. In Table 4, when comparing resting to 'exercise", which component of the ECG trace decreased the most? By how many ms did this component 11. Does it make sense that the component you named in #10 shortened the most? Why or why not?

Explanation / Answer

ANSWER: 9 The elapsed time between R- waves (Delta T) is inversely proportional to beats per minute (BPM) of heart. Hence, the longer the delta T, higher the BPM (beats per minute). If elapsed time (Delta T) shortens then beats per minute (BPM) would increase to higher level.

ANSWER: 10 In resting condition of body, time between the end of T- wave and R-wave is 353 ms but when a person take exercise then it would be about 107 ms. Hence, most decreased component (246 ms) is detected here by EEG (Electroencephalograph).

ANSWER: 11 The components that discussed in previous question are T- wave and R-peak wave. The T-wave is dome shaped which indicates ventricular repolarisation (ventricular relaxation) and R- peak wave is reprasents that how deep or long is the ventricular depolarisation (ventricular contraction).

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