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Chapter 11, Problem 6RQ
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### Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

#### Solutions

Chapter
Section
BuyFindarrow_forward

### Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909
Textbook Problem

# The maximum heart rate of a 45-year-old person isA. 155 beats/minB. 165 beats/minC. 175 beats/minD. 185 beats/min

Summary Introduction

Introduction:

The normal heart rate for a resting adult lies in the range 60-100 beats/minute. It is estimated that with age, the heart rate decreases. It may be because of the decreased myocardial oxygen supply or decreased heart compliance.

Explanation

Option (C) is 175 beats per minute. The maximum heart rate of an individual can be determined using the formula given as, Maximum heart rate: 220 - present age. Therefore, a 45 year personâ€™s heart rate can be calculated as follows

MaximumÂ heartÂ rateÂ =Â 220Â âˆ’Â 45Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

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