Correcting Errors in Trunk Movement
What is the function of the trunk of your body in running? Does it move? Does it contribute to forward progress? Is it active or passive? Is it carried or does it do the carrying?
Essentially, your trunk is the container for your body mass. It must be strong to carry all your weight and stay in proper posture without fatiguing. It must be resilient to minimize any shock. And it must be “quiet” to prevent any unnecessary movements that would detract from smooth forward progress.
While it seems a simple matter to say that you must maintain a relaxed upright carriage to your body, there are a number of subtle deviations that can intrude upon your technique and make your running far less efficient.
The following running drills are used and are highly effective as a corrective measure.