We have observed the sleeping metabolism of our three investigators two nights in each in summer and autumn of 1950, winter, spring and summer of 1951. Purpose of this report is to emboss the seasonal fluctuation of sleeping metabolism, which is not only interesting physiologically, but also necessary to estimate the caloric requirement of the nation. Figure I shows the basal metabolism, sleeping metabolism and their ratio of 3 investigators S. S., S. N. and S. K., One can understand at a glance that the seasonal fluctuation of sleeping metabolism runs entirely parallel to the basal metabolism. We conclude, consequently, the average basal metabolic rate of sleeping all through a year-94% which was reported on the Report 5-can be available in every season or through a year. An unexpected result was the width of timely variation of metabolism during sleep. The variation was±5%, unless the subjects moved or talked in sleep when the variation amounted to ±10%. It seems to us, this variation is rather wider than in basal metabolism. This means, we suppose, the reflex of autonomic nervous system—subcortical refrex—comes out easierly in resting status of the cortex.
Average basal metabolism of 6 muscular workers, who engaged in the leather manufacturing industry, was 37.1 Cal./hr./sq.m., that is almost the same with the Japanese standard value 36.4 Cal. Considering, that many of the basal metabolism of hard muscular workers obtained in the past were usually much higher than the standard, this would come from their poor nutrition.
Two kinds of egg-shell and lime stone powder with particles of different sizes were used as sources of calcium and we investigated into the relationship between the size of the particles and their nutritive utilization from the experimental view point of calcium retention in bones of albino rats. As the rates of utilization of calcium were found to be 81.46% (large particle) to 82.26% (small particle), 57.60% (large particle) to 55.06% (small parficle) and 53.01% (large particle) to 53.86% (small particle) in three experiments respectively. It is considered that the size of particle of powder will net influences upon the utilization of Calium.
Time-study of daily life and utrition survey were conducted on 906 house-wives living in Tokyo. in March and April, 1951. Results obtained as follows: (1) Time-study of daily life: Sleeping hours are 7 hours and 32 minutes, and it is considered to be sufficient physiolog cally. Times spent for domestic affairs are 9 hours and 26 minutes, and the rest 7 hours are used for the ocher matters containing 2 hours and 41 minutes of time for culture. It tells us that their working time is longer compared with that of business man. It may be said that the situation on living of house-wives is almost same as 10 years ago. (2) Amoun's of nutrients consumed and intaken: Consumed calories per day are 1942 Cal., and 2125 Cal. are taken in, the latter being about 10% over. It is to be said from the above that caloric accounting well balanced and physiological requirement for daily work is at any rate satisfied by oods intaken. But calcium and vitamin A are below the Japanase standard allowances. Our nutritional statistics showed that deficiency of vitamin A and C has usually to do with seasonable sending out of vegetables, and quantity of them dominates these nutrients. Progress of nutritional knowledge of house-wives is an only way to find a solution of this problem.
In both consuming and producing districts, the amounts of calcium taken from plants are approximately same, and Ca from cereals is of the most. The source of animal calcium comes almost from fishs and shells.