A new study measured how much more effort runners expend on self-powered versus motorized treadmills.
I climbed aboard. Because this type of treadmill uses bodyweight and the friction of your foot to move the belt—rather than a motor—my initial steps were awkward. After a few minutes, I realized that my cadence and how far up the front of the curve I stepped affected how fast I moved. I also learned I could adjust the resistance of the belt using a knob on the front of the machine.
Finally, I got situated, but a few minutes later, I found myself panting and struggling to continue. I wasn’t running anywhere near my usual pace, and yet my heart was pounding. Were curved treadmills supposed to make me work this much harder?, the answer is definitely yes. For this study, researchers from the University of Essex School of Sport, Rehabilitation and Exercise Science recruited 13 male runners, all of whom had 5K PRs of 20 minutes or better. They had the runners complete four treadmill runs over a span of two weeks. The first run was a voluntary run to exhaustion, in order to define baselines for each runner’s maximum heart rate, velocity, and oxygen uptake.
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