THIS IS A 1973 RUSSIAN REPORT BY DR. DONSKOY ON THE GAIT OF PATTY IN THE 1967 PATTERSON AND GIMLIN BIGFOOT FILM FOOTAGE
BY DR. DMITRI D. DONSKOY, CHIEF OF THE CHAIR OF BIOMECHANICS AT
THE USSR CENTRAL INSTITUTE OF PHYSICAL CULTURE IN MOSCOW, USSR
As a result of repeated viewings of the walk of a two-footed creature in the 1967 "Bigfoot" footage and detailed examination of the successive stills from the footage one is given the impression of a fully spontaneous and highly efficient pattern of locomotion shown therein, with all of the particular movements combined in an integral whole, suggesting a smoothly operating and coherent system.
In all of the strides the movements of the arms, or upper limbs, and of the legs, or lower limbs, are well coordinated. A forward swing of the right arm, for example, is accompanied by a movement of the left leg. This is called cross-limb coordination and is essential for man as well as being quite natural for many patterns of locomotion in quadrupeds, such as in walking or trotting movements.
The strides are energetic and strong, with the leg swinging far forward. When a man extends his leg in this manner he walks at a rapid pace and overcomes by momentum the breaking effect of the angled hurdle provided by the outstretched leg. Momentum is proportional to mass and speed so the more massive the biped the less speed is needed to overcome the breaking effect of an outthrust striding leg.
The arms have swinging motion, which suggests that the muscles are exerted at the commencement of each cycle, after which they relax, allowing the movements to continue by momentum. The character of the arm movements indicates that the arms are massive and the muscles strong. After each heel strike the leg of the creature bends, absorbing the full weight of the body and smoothing over the harmony is the result of synergy, i.e., the combined operation of a whole group of muscles.
Since the creature is manlike in appearance as well as bipedal, its gait resembles in principle the gait of modern man. But all of its movements indicate a much greater weight than is normally found in modern man. Its muscles appear to be much stronger and the walk swifter than that of the normal walk of a man.
There are certain characteristics of the creature's walk, which are difficult to explain in words. They might be called "expressiveness of movement." In modern man this is sometimes seen in a sporting or labour activity where economy and accuracy of movement is vital and essential to the activity. In study this particular characteristic can be seen by an experienced observer. In "expressiveness of movement" the motor systems upon which the particular quality is dependent are perfectly adapted to the tasks which they are called upon to perform. In other words, in the case of this creature, the movements have a neat perfection which through regular use have become habitual and automatic.
On the whole the most important thing in the study is the consistency of all of the above-mentioned characteristics. They not only complement each other but also interact in many ways.
All of these factors together allow us to evaluate the gait of the creature of the footage as a natural movement without any sign of the artfulness that one would see in an imitation. At the same time, with all of the diversity of human gaits, such a walk as demonstrated by the creature in the film is absolutely non-typical of man.
Dmitri Donskoy, 1973.