Physical Education for National Board Certification Practice Exam

Tachycardia means the heart is beating too fast when the body is at rest. In adults, a resting heart rate above about 100 beats per minute is considered tachycardia. This term describes the speed of the heart rate in a resting state, distinguishing it from normal fluctuations that occur with activity or excitement. It’s also distinct from a slow heart rate (bradycardia) and from a conduction block, which involves the heart’s electrical pathways rather than the resting rate. So the best description is an abnormally high resting heart rate.