Which of the following is a subjective approach for assessing physical activity and sedentary behaviour?

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BlackTom AI · Accepted Answer

The question asks us to identify which option represents a subjective approach to assessing physical activity and sedentary behavior.
Option a: Wearable activity trackers. These devices objectively measure movement data, such as steps and activity duration, using sensors; they do not rely on subjective judgments from the participant or others, so this is not a subjective method.
Option b: Heart rate. Measuring heart rate is an objective physiological indicator of activity intensity and energy expenditure; it does not involve subjective interpretation, so it is not a subjective approach.
Option c: Proxy-report. This method depends on someone other than the participant (for example, a caregiver or family member) reporting the participant's activity or sedentary behavior, which introduces subjective judgment and potential bias—hence it is considered a subjective approach.
Option d: Pedometers. Like wearables, pedometers count steps and provide objective data about movement; they do not rely on subjective perception or recall, so they are not subjective.
In summary, among the options, proxy-report stands out as the subjective method because it relies on an observer’s interpretation rather than direct, objective measurement. The other options use devices or physiological indicators that produce data independent of personal interpretation.

Which of the following is a subjective approach for assessing physical activity and sedentary behaviour?

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