Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : When using the Karvonen's formula, the exercise heart rate is higher than when using the maximum heart rate alone for a 40 years old male having a resting heart rate of 80 bpm. Reason (R) : Karvonen's formula is based on the heart rate reserve which is the difference b/w the maximum heart rate and the exercise heart rate. In the light of the above statements, choose the most appropriate answer from the options given below :
Analysis of Assertion (A)
Assertion (A) states that the exercise heart rate using Karvonen's formula is higher than using maximum heart rate alone for a specific individual.
Karvonen's formula calculates a target heart rate (THR) based on Heart Rate Reserve (HRR):
$THR = ((Max HR - Resting HR) × % Intensity) + Resting HR$
Let's consider the example: 40-year-old male, Resting HR (RHR) = 80 bpm. Estimated Max HR (MHR) = 220 - 40 = 180 bpm.
Heart Rate Reserve (HRR) = MHR - RHR = 180 bpm - 80 bpm = 100 bpm.
Using Karvonen's formula for, say, 70% intensity:
$THR = (100 bpm × 0.70) + 80 bpm = 70 bpm + 80 bpm = 150 bpm$
If "maximum heart rate alone" is interpreted as simply the MHR value (180 bpm), then the calculated Karvonen THR (150 bpm) is lower. However, if "using maximum heart rate alone" implies a less personalized calculation, like a simple percentage of MHR (e.g., 70% of 180 = 126 bpm), then Karvonen's THR (150 bpm) is indeed higher. Given the context and options, we accept Assertion (A) as correct, interpreting it as Karvonen's personalized calculation yielding a higher target rate compared to simplistic MHR-based methods for a given intensity.
Analysis of Reason (R)
Reason (R) claims Karvonen's formula uses heart rate reserve, which is the difference between maximum heart rate and *exercise* heart rate.
The definition of Heart Rate Reserve (HRR) used in Karvonen's formula is:
$HRR = Maximum Heart Rate (MHR) - Resting Heart Rate (RHR)$
Reason (R) incorrectly states the difference is between MHR and the *exercise* heart rate. The correct difference is between MHR and the *resting* heart rate. Therefore, Reason (R) is incorrect.
Conclusion
Assertion (A) is considered correct based on a plausible interpretation of the comparison.
Reason (R) provides an incorrect definition of Heart Rate Reserve.
Thus, (A) is correct, but (R) is not correct.
Similar Questions
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Reason (R) : The impulses which arrive through the relatively large diameter nerves block the pain impulses via the pain gate mechanism.
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The control of ventilation and perfusion is represented by the following correct order of events :
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The correct order of events of Cori cycle after muscular activity is :
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E. Reduction of pyruvate to lactate in muscle which goes to liver
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The correct sequence of events occurring during the contraction of skeletal muscle is :
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B. Linking of actin and myosin filaments
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Sequence of events for development of pulmonary congestion and oedema :
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Important Questions from Mixed Topic (CUET PG)
- Who was the founder of Bolshevik Communist party?
- What is the key guide to statecraft in the realist tradition?
- Chronologically arrange the events in the Cold War period.
A. Berlin Wall is constructed
B. Communist China joins the UN
C. Soviet invasion of Czechoslovakia
D. Berlin Blockade
Choose the correct answer from the options given below: Morgenthau's principles of political realism are:
A. Politics is rooted in permanent and unchanging human nature which is basically self centred, self-regarding and self-interested
B. Politics is an autonomous sphere of action and cannot therefore be reduced to morals
C. International Politics is an arena of conflicting self-interests
D. The ethics of international relations is situational ethics which is very different from private morality
Choose the correct answer from the options given below:Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?
