I often suggest to people to walk as a regular activity. I think that walking can help keep our balance, range of motion, agility and bone density functioning until high age. I often get asked if walking on treadmill is as good as walking outside, especially in the winter months when the weather is cold and it gets icy in Northern New Mexico.
First of all, I need to explain what happens during each step. The thigh bone which is called the femur bears all the weight of the body as we shift weight from leg to leg. It is as if we fall with each step; it’s only the other leg that catches us. The femur is the pillar for stability and balance between the moments of ultimate instability that falling from leg to leg is.
The structure of the femur is an “L” shape bone. When we move, the bone floats in three dimensions and depending on its freedom, it adjusts properly to provide the support for the rest of the body through each step. More often than not, the femur is held by groups of muscles and is prevented from a full glide through the soft tissue around it. These adhesions are what ultimately changes the gait through the whole body.
Walking on a treadmill changes our natural gait even further. Because it moves underneath us and has a certain limited length, it doesn’t give us the opportunity to follow through all the stages of the movement. The final push-off with our toes gets limited. We don’t get the full benefit of turning of the femur at that stage of the step which results in stretching through the hip flexor muscles (particulary the quadriceps). Because of the treadmill’s barrier in the front, we also don’t get the full stride of reaching with the leg forward which would give us a stretch of the hamstring (back) side of the leg.
If the choice is to walk on a treadmill or not walk at all, I recommend the treadmill. If the choice is walking on a treadmill and walking outside in cold or on ice, I recommend the treadmill again. But, if the choice is walking outside and walking on a treadmill while having our New Mexico turquioise sky with the golden sunshine, I’d choose to walk outside everytime.
Next week, I will talk about the 10 things to improve awareness that one can think about while walking.


