For the purpose to increase measurements of basal metabolism of the aged in number, one hundred aged persons over 60 years old were investigated in the summer of 1956. The following measurements were made: basal metabolism, bodystructure, vital capacity, blood pressure, whole blood specific gravity, serum cholesterol, and nitrogen and creatinin in urine. Results obtained were as follows: 1) The basal metabolisms per square meter per hour of the aged were 33.7Cal. (60-69 yrs.), 32.1Cal. (70-79yrs.) for men, and 32.9Cal. (60-69yrs.), 31.2Cal. (70-79yrs.), 31.3Cal. (80-89yrs.) for women. These values show only a 3 per cent sexual difference, which is generally much larger in the younger. 2) This inclination of decrease in sexual difference was also observed in skinfold-thickness. In the younger, female skinfold-thickness is usually more than two times as compared with males, but such a sexual difference was found to decrease to a half in the aged. 3) Problems of hypertension and arteriosclerosis are of importance here in the aged. Blood pressures of more than 20% of the subjects exceeded 200mg Hg, but the concentration of serum cholesterol was 178mg/dl for males, and 197mg/dl for females, which were considered to be rather low levels for their age.
Table 1 gives the basal metabolism values of five subjects (laboratory research workers) which were observed twice a month for a period of 4-6 years. Figure 1 illustrates the correlation between the total of the above average monthly values and the average external temperature of each month. From the above table and figure we can say that BM levels show an inverse proportional relationship to the average external temperature. This is further verified on investigating the quantitative relationship between the BM fluctuation percentage and the average external temperature; it is found from the readings of the interior scales (percentages on temperature scale are calculated on absolute temperature) on both axes that the two are in complete agreement. This quantitative relationship between BM and external temperature is very interesting, though it is based on present Japanese daily life conditions and may be inapplicable to people of other rations. From these data the seasonal BM variation of the Japanese race is quantitatively estimated as 1/273 for a variation of 1°C, that is slightly lowere than 4 percent for a variation of 10°C. Furthermore, if there is significance in the rise and fall of seasonal variation BM curves, the slight rise observed in April and July may be explained by the light clothing during the seasonal change between spring and summer, while the change to heavy clothing may be the cause of the fall in December.
1) 身体障害者59名の基礎代謝率 (B. M. R.) は前報同様何れも高く, 上肢切断者+6.45, 片下肢切断者+8.72, 両下肢切断者+13.75と, 切断部分の大きいほどB. M. R. は高い傾向を示した。また, 脳性小児麻痺者は+10.29, 脊髓性小児麻痺者は+15.31で後者の方が高いことは前報と同じであつた。さらに関節炎・骨髓炎者は+5.08であつたが進行性筋萎縮だけは-16.0と大きく負の値を示した。 2) 3～7ケ月間の訓練にわたる基礎代謝の変動については一定の傾向はみられなかつた。