Isthmic spondylolisthesis is caused by a defect in a part of the vertebra called the pars interarticularis. This defect can cause the vertebra to slip forward.
What's a normal heart rate? Most adults have a resting heart rate of 60-100 beats per minute (bpm). The fitter you are, the lower your resting heart rate is likely to be. For example, athletes may have a resting heart rate of 40-60 bpm or lower. You should contact your GP if you think your heart rate is continuously above 120 bpm or below 40 bpm, although this could just be normal for you.
Normal resting heart rate. The US National Institutes of Health has published a list of normal resting heart rates. The pulse gets progressively slower through childhood toward adolescence. The normal resting heart rate for adults, including older-aged adults and everyone over the age of 10 years, is: 4.1  Between 60-100 heartbeats a minute.ormal resting heart rate. The US National Institutes of Health has published a list of normal resting heart rates. The pulse gets progressively slower through childhood toward adolescence. The normal resting heart rate for adults, including older-aged adults and everyone over the age of 10 years, is: 4.