The Montgomery advertiser., 1902-01-26
EXERCISE AND LIFE.
SCIENTIFIC PROOF THAT THE
 ONE PRoLoNGs THE OTHER
A New Instrument and Its Remark able Evidences-Centre of Gravity of the Human
 Body.

Problems of the distribution of the life mud and showing the value of systematic supply of the body have been solved by William A. Anderson, director of the Yale gymnasium.
 Professor Anderson's researches have been carried on with the aid of muscle bed, which is an invention original with him. by means of which he studies the center of gravity of the human body in a horizontal position to ascertain whether # rose or fell and if the doctors theory that it does change was correct to see how great an amount was sent to any given portion of the body by either phys icai or mental exercise, by muscular la
 Long ago he formed a belief that the center of gravity changed in the hori- zontal body. What induced the change. no how great 1t was; and what the center the problems he set out to solve at the
 Life" said Dr. Anderson. depends upon the supply of blood that is sent to supply and death will ensue. It is de- sirable that the flow of blood be acceler- ated several times day if one wishes to renew tissues. remove waste sub stance, and keep a balanced metamor- phosis' of living cells. This Is why l speak of the blood supply to parts.'
 Muscle Beds Fine Balance.
 The attempts to settle these questions consisted of experiments on the muscle bed. This is shallow box balanced on knife edges by compensatory weights. On this movable bed man, lying pros trate, can be rolled in any direction by large or by fine adjustment. There are levels and graduated scales and an bed, resting on exceedingly accurately made knife blades, is sensitive to the highest degree. Professor Anderson has placed on this teetering bed more than ufN 1xa@ A.lr %VnAtn .k~~% of gravity in such ways that in every case it will assist most effectively in answering one of the questions he set for solution at the beginning of the ex-
 The commonest experiment made was placing a man on the bed, in perfect quilibrium, and then, by asking him question which required considerable mental effort to answer, upsetting the balance. In every case the mental ex- ertion caused the center of gravity to rise. The lower part of the bed, now the lighter, flew up and the upper part. This experiment is regarded as proving conclusively that simple mental effort causes a rush of blood to the head.
 Again, Dr. Anderson has recorded the had taken his annual examination in his college studies; and also after the exam ination had been concluded. He found that under the stress of such conditions the center of gravity had been raised from two to sixteen millimetcrs. or from one-sixteenth of an inch to two and a half inches.
 In carrying out this experiment con- versely it has been shown that in the case of men who have brain congestion the center of gravity would fall if the lower extremities were exercised. This would call the blood supply away from the head and encephalon and distribute it throughout the body.
 Perhaps the most unique application of this experiment is shown when perfect equilibrium is established and center of gravity is found and the subject is told to go mentally through a set of leg gym nastics. Although the subject does not once move his legs and lower extremi. ties. the fact that he thinks them out" Is enough to cause a rush of blood from the head to the feet and to make the center of gravity fall toward the feet. to leave the muscle bed, go through the physical exercises, and return to the bed. There is found to be no great diff ference between thinking out" the gym nastic exercises and executing them.
 The most practical application of this phenomenon is evident In the efforts of physicians to call the blood supply away from the brain to prevent cerebral par epilepsy. When the blood supply can be controlled by some highly perfected machine of the Anderson type, apoplexy. epilepsy, or paralysis may, in many
  cases cured. The Anderson invention traces all these cases to improper blood supply and distribution. An incident springing from this application is cited coghzed cure. The Anderson experi- ments place the seat of the trouble in the brain rather in the head-a sort | of starvation as far as the blood supply | are used in directing the hand in writ | ing. The cure for the disease would be, | of course, a kind of exercise which would | distribute the blood supply so that the | paralyzed portion of the brain would re- | gain its vigor.
 Valuable Exercises are Fun.
 Another set of experiments conducted | by Dr. Anderson related to men who | took physical exercise in listless, au- tomatic, or mechanical manner, and in the change in the center | of gravity with those who take an ex- ercise with keen pleasure or in a con- captions the tests made show that in the case of the listless workers the center of gravity changed slowly. while in that of the others the supply of blood sent | the line of gravity went up and down 
 Dr. Anderson perfected a set of ex- periments to secure an answer to the question: If a student wishes to send more blood to the arms and trunk, should he exercise standing or while seated?"
 The muscle bed experiments cause Dr. Anderson to answer this question as fol- lows:
 If two men wish to exercise the upper trunk, including the arms, and one of theso men will take his exercise while seated, the center of gravity will go, in his case. higher than in the case of the other who stands while he works.
 If two men exercise in the same man. ner the arms and thorax. one standing before a looking glass. the other not, the former will show a higher center of gravity than the latter, or a richer blood supply, to the parts of his body. .. This is another lllustration of the effect of conscious versus unconscious mechanical methods of exercise"
 What Second Wind" Is
 A new light has been thrown upon scientific knowledge of blood supply to the legs in running. The Anderson eX- of a sprfnter, after he has covered his usual distance of from 100 to 200 yards, the center of gravity has risen instead | of fallen, showing that the blood has | been pressed out of his leg muscles by | rapid and forceful action. The belief has | running there Is a large blood supply | sent to the legs. The opposite is shown | to be true by these tests. The experi- | ments indicate, however that In the case l of long distance runners the blood sup | ply to the legs is greatly Increased. This and general athletic term, getting his wind is simply getting better distri- button of the blood supply in the legs.
 The last series of experiments com pared agreeable with non-agreeable eX- subjects took pleasure sent richer sup ,alv 0f hlO0d tO nartS of the body than