From the D~pnrtmei~t of Physiologjl, College of M~diciste and Child Welfare Station, Uwkersity of Iowa.The extra energy output caused by walking was determined in 65 children, boys and girls, ranging in age from 11 to 14 years. The procedure followed was similar to that of Benedict and Murchhausen.' Our results show a general average cost per horizontal kilogram meter for the boys of 0.6449 gm. calories and for the girls 0.5949. The general average for the entire group of boys is approximately 20% higher than the 0.538 gin. cal. given by Smith2 as an average for 8 normal men examined by him and which he says conforms to the results of Eeneclict ancl Murchhausen. The average basal metabolic rate for the group of boys included in our studies was 47.5 cal. per sq. meter surface according to the figures recorded by Du Bois3 for boys of different ages. This basal rate of 47.5 cal. is also 20% higher than given for adult men in the same table..Accepting the value of 0.53s gni. cal. reported by Smith' as a fair average cost per H. Kgni. ht. for horizontal walking by normal adult nien and using the Du Bois" standard table of B.M.R. for different ages ancl sex we should 1)e able, if there is any relationship between basal metabolism and unit cost of walking, to calculate the probable cost of a similar activity in each of the different age groups o i boys ancl girls. The calculated values and our experimentally obtained results are set out in Talile I for each of the age groups.
der capacity, decrease detrusor urinae contractions, and perhaps, through its little discussed topical anesthetic ef¬ fect, it may damp the peripheral neuroreceptor's response to irritation. It does not, however, correct underlying disorders.
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