A natural method of physical training : making muscle and reducing flesh without dieting or apparatus / by Edwin Checkley.

  • Checkley, Edwin
Date:
[between 1900 and 1909?]
Catalogue details

Licence: In copyright

Credit: A natural method of physical training : making muscle and reducing flesh without dieting or apparatus / by Edwin Checkley. Source: Wellcome Collection.

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    an upright curve, with the pressure at C, is not by any means so strong as the straight line with the pressure at D. This is a rudi¬ mentary principle of mechanics that cannot be escaped. If neither the concussion theory nor the theory of force in support justifies the curved spine, and the curvature is explained only by the action of weight, of muscular action, and of careless carriage, then there is no reason why the curve should not be voluntarily modi¬ fied, if the modification can be shown to be advantageous. Some of the reasons why the spine should be straight, or should, at least, have as little curve as possible, have already been suggested in this treatise. It will appear that when it is straightened the general grace and force of the body is increased. The backward curve, as in Fig. 1 (p. 22), is enfeebling and forceless. The forward curve, as in Fig. 2 (p. 25), is dangerous as well as inelegant. This posi¬ tion naturally tips the pelvis forward. In a careless or feeble position the pelvis is some¬ times too far forward—sometimes too far back.