What is the resting heart rate threshold for tachycardia?

Tachycardia is defined as a resting heart rate that exceeds the normal range, specifically above 100 beats per minute (bpm). This threshold is recognized in clinical settings as an indicator of potential health issues or physiological stress.

In healthy adults, a normal resting heart rate typically ranges from 60 to 100 bpm. When an individual’s heart rate is consistently measured above 100 bpm at rest, this condition is classified as tachycardia. Understanding tachycardia is crucial in fields such as kinesiology and exercise science because it can affect performance, recovery, and overall cardiovascular health. Identifying elevated heart rates can help practitioners assess an individual's fitness level and cardiovascular response to exercise or stress.

The other options presented do not meet the established criteria for tachycardia. For instance, a resting heart rate of less than 60 bpm indicates bradycardia, which is a different condition associated with a sluggish heart rate rather than an accelerated one.