Exercise in education and medicine / by R. Tait McKenzie.

  • R. Tait McKenzie
Date:
1909
Catalogue details

Licence: Public Domain Mark

Credit: Exercise in education and medicine / by R. Tait McKenzie. Source: Wellcome Collection.

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    weakened by fasting was such as to restore them temporarily to their normal condition. It also restored a normal fatigue curve that was reduced and shortened by a wakeful night (Figs. 19 and 20). After an intense, prolonged intellectual strain of five hours in the final examination of medical students, Maggiora’s fatigue curve was one-fifth of the normal. An hour later, after ten minutes of massage, the fatigue curve was almost completely restored. Perhaps the most interesting results Fig. 17. Fig. 18. Fig. 17.—-Fatigue curve of flexors of right middle finger after a walk of ten miles. Fig. 18.—Shows the influence of massage for ten minutes upon the same muscles already indirectly weakened by walking. Weight, 3 kilos ; rhythm, two seconds (Mag- giora). obtained were in his studies of artificial anemia of the muscles. After compressing the brachial artery, the finger could contract only 11 times in comparison to 265 times under normal condi¬ tions. While the arterial current was still shut off, three minutes of vigorous massage was given, after which the finger could con¬ tract only nine times, proving that massage had no effect when the blood-supply was intercepted. From these experiments it is evident that massage essentially affects the local circulation by bringing a greater quantity of nutrition to the muscles, and re-