Why Do We Swing Our Arms When We Walk
Camila Farah
What i believe is happening is that arm swinging is a neurological.
Swinging our arms while walking is more energy efficient than keeping them still. In fact moving our arms while we walk makes it easier for our legs too. It is natural to try to reduce movement of the head this is why you swing your left arm in time with the right leg and vice versa. As we change our walking speed our nervous systems adapt muscle activation patterns to modify arm swinging for the appropriate frequency.
Earlier this year bruijn and colleagues also found another benefit. When we run we use our upper limb muscles to swing our arms at a much faster rate than the arms natural frequency. Human bipedalism is such a new evolutionary. This significantly lowers the effort that we put in during a casual walk.
Think of it this way your arm is like a pendulum. Furthermore swinging your arms in sync with your legs i e. Arm swinging improves biomechanical efficiency notice during a walk or run that your limbs are out of phase left leg forward and right arm backward etc. While it takes energy to move our arms this is more than compensated for by the reduced energy needed by the rest of the body to propel itself forward.
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We humans swing our arms and legs contralaterally to couterbalance each other. These movements are handled by the cerebellum a specialised area of the brain. This way body torque from the leg and. Holdover from quadrupedal locomotor patterns.
When quadrupeds walk most.
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