Compare THREE different research questions about ventilation rate responses to aerobic training, and evaluate which would provide the most valid and reliable data for a student research project. (6 marks)
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Sample Answer
Question 1: “Does aerobic training change ventilation rate?”
- This question lacks specificity about training type, duration, and measurement methods, making valid data collection difficult as variables remain undefined.
Question 2: “What is the effect of 3 weeks of fartlek training on ventilation rate during submaximal exercise?”
- This question improves specificity by naming training type and duration, but omits measurement protocols and participant details, risking reliability.
Question 3: “How does 30 minutes of continuous aerobic training at 70% maximum heart rate, performed 3 times weekly for 4 weeks, affect ventilation rate during a standardised step test in 15 – 17 year old students?”
- This question provides precise parameters for training intensity, frequency, duration, measurement protocols, and participant group.
Validity and Reliability
Question 3:
- Provides the most valid and reliable data by clearly defining all variables, enabling consistent implementation and standardised testing.
- It allows for accurate pre-and post-testing comparisons with controlled variables, enhancing internal validity.
- Its specificity ensures study reproducibility, improving reliability and allowing meaningful conclusions about ventilation responses to aerobic training.
Sample Answer
Question 1: “Does aerobic training change ventilation rate?”
- This question lacks specificity about training type, duration, and measurement methods, making valid data collection difficult as variables remain undefined.
Question 2: “What is the effect of 3 weeks of fartlek training on ventilation rate during submaximal exercise?”
- This question improves specificity by naming training type and duration, but omits measurement protocols and participant details, risking reliability.
Question 3: “How does 30 minutes of continuous aerobic training at 70% maximum heart rate, performed 3 times weekly for 4 weeks, affect ventilation rate during a standardised step test in 15 – 17 year old students?”
- This question provides precise parameters for training intensity, frequency, duration, measurement protocols, and participant group.
Validity and Reliability
Question 3:
- Provides the most valid and reliable data by clearly defining all variables, enabling consistent implementation and standardised testing.
- It allows for accurate pre-and post-testing comparisons with controlled variables, enhancing internal validity.
- Its specificity ensures study reproducibility, improving reliability and allowing meaningful conclusions about ventilation responses to aerobic training.