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Measurement, STD1 M4 2024 HSC 2 MC

Four people completed the same fitness activity.

The graph shows the heart rate for each person before and after completing the activity.
 

Which person had the LEAST difference in heart rate?

  1. Jo
  2. Kim
  3. Lee
  4. Mal
Show Answers Only

\(B\)

Show Worked Solution
\(\text{Option A: }\)  \(\text{Jo}\)  \(=120-80=40\) 
\(\text{Option B: }\) \(\text{Kim}\) \(=120-100=20\ \checkmark\) 
\(\text{Option C: }\) \(\text{Lee}\) \(=120-90=30\) 
\(\text{Option D: }\) \(\text{Mal}\) \(=150-100=50\) 

  
\(\Rightarrow B\)

Measurement, STD1 M4 2022 HSC 15

Tom is 25 years old, and likes to keep fit by exercising.

  1. Use this formula to find his maximum heart rate (bpm).
  2.       Maximum heart rate = 220 – age in years
  3. Tom's maximum heart rate is .................... bpm.  (1 mark)
  4. Tom will get the most benefit from this exercise if his heart rate is between 50% and 85% of his maximum heart rate.
  5. Between what two heart rates should Tom be aiming for to get the most benefit from his exercise?  (2 marks)

Show Answers Only
  1. `195\ text{bpm}`
  2. `text{98 – 166 bpm}`
Show Worked Solution
a.    `text{Max heart rate}` `=220-25`
    `=195\ text{bpm}`

 

b.   `text{50% max heart rate}\ = 0.5 xx 195 = 97.5\ text{bpm}`

`text{85% max heart rate}\ = 0.85 xx 195 = 165.75\ text{bpm}`

`:.\ text{Tom should aim for between 98 and 166 bpm in exercise.}`

Measurement, STD1 M4 2021 HSC 6 MC

Blood pressure is recorded as systolic pressure/diastolic pressure and measured in mmHg.

When standing upright, Mary’s blood pressure was 139/85. Three minutes after sitting down, her blood pressure was 118/74.

What was the change in Mary’s diastolic blood pressure?

  1. There was an increase of 11 mmHg.
  2. There was an increase of 21 mmHg.
  3. There was a decrease of 11 mmHg.
  4. There was a decrease of 21 mmH.
Show Answers Only

`C`

Show Worked Solution

`text(Diastolic pressure went from 85 to 74,)`

♦ Mean mark 45%.

`text(or decreased by 11 mmHg.)`

`=> C`

Measurement, STD1 M4 2019 HSC 8 MC

Heart rate is measured in beats per minute. Maximum heart rate (MHR) is calculated using the following formula.

MHR = 220 − age

Target heart rates are calculated as a percentage of MHR.

Felicity's age is 28. Her trainer calculates that her target heart rate range is 60% to 80% of her MHR.

Which of the following lies within this target heart rate range?

  1. 100 beats per minute
  2. 140 beats per minute
  3. 180 beats per minute
  4. 220 beats per minute
Show Answers Only

`B`

Show Worked Solution
`text(MHR)` `= 220 – 28`
  `= 192`
`text(60%) xx 192` `= 115.2`
`text(80%) xx 192` `= 153.6`

 
`text(140 beats is in the range.)`

♦ Mean mark 46%.

`text(i.e.)\ 115.2 < 140 < 153.6`

`=> B`

Measurement, STD1 M4 2019 HSC 6 MC

When blood pressure is measured, two numbers are recorded: systolic pressure and diastolic pressure. If the measurements recorded are 130 systolic and 85 diastolic, then the blood pressure is written as '130 over 85'.

The bars on the graph indicate the healthy ranges of blood pressure for people of various ages.
 


 

Which person has both blood pressure measurements in the healthy range for their age?

  1. Stella aged 23 with blood pressure 120 over 72
  2. Shane aged 35 with blood pressure 124 over 90
  3. Jon aged 54 with blood pressure 137 over 94
  4. Annie aged 61 with blood pressure 142 over 88
Show Answers Only

`D`

Show Worked Solution

`text(Annie has both measures in the healthy range.)`

♦ Mean mark 48%.

 
`=> D`

Measurement, STD2 M7 SM-Bank 4

Blood pressure is measured using two numbers: systolic pressure and diastolic pressure. If the measurement shows 120 systolic and 80 diastolic, it is written as 120/80.

The bars on the graph show the normal range of blood pressure for people of various ages.

  1. What is the normal range of blood pressure for a 53-year-old?  (2 marks)

  2. Ralph, aged 53, had a blood pressure reading of 173 over 120. A doctor prescribed Ralph a medication to reduce his blood pressure to be within the normal range. To check that the medication was being effective, the doctor measured Ralph's blood pressure for 10 weeks and recorded the following results.  
     

     
    With reference to the data provided, comment on the effectiveness of the medication during the 10-week period in returning Ralph’s blood pressure to the normal range.  (3 marks)

Show Answers Only

a.   `text{Normal range (systolic): 117 – 145}`

       `text{Normal range (diastolic): 81 – 89}`

b.   `text(Effectiveness of medication)`

`text(• systolic and diastolic pressure reduced below original)`

   `text(readings from week 3 onwards.)`

`text(• systolic pressure in normal range from week 5 onwards.)`

`text(• diastolic pressure in normal range from week 7 onwards.)`

`text(• blood pressure only in the normal range from week 7.)`

Show Worked Solution

a.   `text{Normal range (systolic): 117 – 145}`

`text{Normal range (diastolic): 81 – 89}`

 

b.   `text(Effectiveness of medication)`

`text(• systolic and diastolic pressure reduced below original)`

     `text(readings from week 3 onwards.)`

`text(• systolic pressure in normal range from week 5 onwards.)`

`text(• diastolic pressure in normal range from week 7 onwards.)`

`text(• blood pressure only in the normal range from week 7.)`