Metabolism And Growth From Birth To Puberty PDF Download

Excerpt from Metabolism and Growth From Birth to Puberty The third factor to be considered in determining the basal meta holism is that of sleep. While certain observations made in a number of laboratories immy that sleep, per se, is without profound effect upon the metabolism, yet in the light Of our experience in this labor atory during the past decade we are strongly inclined to think that this is an erroneous conception. Furthermore, the opportunities for error in the usual methods of determination of the metabolism during deep sleep are great. When breathing appliances, such as mouth piece, nosepieces, or mask, are used in our experiments, the subjects have been for the most part required to keep awake on the general ground that with sleep the facial muscles relax, especially those about the mouth, and there is danger of leakage of air under these conditions. Practically the only method of experimenting which gives dependable results with a sleeping subject is the chamber method, with the subject asleep inside one of the several forms of respiration chamber. That sleep is a factor of great significance was clearly demonstrated in this laboratory with the subject of a fasting experiment.1 Recent experiments, as yet unpublished, show that the metabolism of a sleeping subject differs appreciably from that of a subject awake, even though in both periods there is the greatest degree of muscular repose. A cursory examination of the data presented in the literature on the metabolism of children shows a wide diversity of results. The literature on the metabolism Of infants, especially of the new-born, has already been reviewed brie y in the two publications giving the results of our earlier studies.2 While it is unnecessary to refer here in detail to the work already cited, it seems desirable, before giving the results of our own observations, to supplement the previous review of the literature by a citation of the observations made by other workers with older children. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."