Lower Back EMG Activity during Exercise on a Vertical versus Partially Reclined Stair-Climbing Machine

Lower back discomfort is common among users of standard vertical stair-climbing machines. A partially reclined stair-climbing machine (PRSC) has been designed to provide more comfort and protection to the lower back while providing the same exercise benefits. Ten individuals were recruited to exercise on both machines while their erector spinae electromyographic activity and heart rates were recorded. There was no significant difference (p .05) trend toward increased heart rate on both machines was observed in the women participants. Because of the high incidence of low back pain and injury, we need exercise modalities that provide both cardiovascular and muscul...