I first came across the concept of tensegrity a while ago when I read a book called Anatomy Trains. The idea is that we are not about individual muscles. Rather individual muscels are actually linked together functionally. There is a bag of fascia around groups of muscles.
A guy called Tom Myers wrote the book and developed the idea really from looking at disections. Everything is connected.
It is a really interesting concept with lots of applications in sports and massage and it is worth reading the book and at least looking at some of the stuff on his website.
Anyway I spotted this article today that seems to indicate that there is something to it:
Based on a tensegrity principle, direct or indirect connections between fascia or muscles which stretch the aponeurosis or intermuscular septum may allow the transfer of tension over long distances, without loss of muscle force produced during rest and activity. The present study aimed to test an effect of massage on electrical (EMG) and mechanical (MMG) activities of a muscle lying distant, but indirectly connected to, the massaged muscle. Thirty-three healthy men participated in the study. To record the activity of the middle deltoid muscle the brachioradialis was massaged, and for the tensor fasciae latae-the peroneal muscles were massaged. An EMG/MMG hybrid probe was used to detect EMG and MMG signals from the middle deltoid and tensor fasciae latae muscles. The EMG amplitude increased during massage in the tensor fasciae lata only, while the MMG amplitude increased significantly in both muscles. It was concluded that there was an electrical as well as a mechanical response of muscle connected indirectly by structural elements with the muscle being massaged indicating an application for the tensegrity principle in massage therapy. It also has a practical importance, because it provides a means for a physiotherapist to influence adverse muscle tension by massaging another distant muscle.