Which muscles do I train on a treadmill?
Leg muscles and glutes
It is not surprising that you train your leg muscles on a treadmill. Your thigh muscles have the strength to push your leg well away with every step. Your buttock muscles help with this. When you pull your heels to your buttocks, you tighten the hamstrings. Your calves catch every step. Your buttock muscles are also put to work during training on a treadmill. If you want to make the training even heavier for your leg muscles, you raise the slope more.
With a treadmill you may not immediately think of training your abdominal muscles. Yet they contract while walking. Your abdominals catch the steps, just like your knees. They work as a kind of shock absorbers. Your oblique abdominal muscles are also put to work. When you walk at a higher pace, you notice that your upper body is twisting back and forth. This movement is accompanied by the oblique abdominal muscles.
Your back muscles, like your abdominal muscles, keep your upper body stable. Good posture is important to maintain a high pace. The twist that you make while walking also trains your back muscles. In addition, many people tend to walk with a slightly bent back with the shoulders falling inwards. Make sure you have a straight posture while walking. Do you notice that you are still making a mess? Then pull your shoulder blades a bit more together.