With 22 patients hospitalized in the Rehabilitation Center of Okayama Prefecture the oxygen metabolism of physical hanlicapped was investigated. These subjects were composed of 8 cases of poliomyelitis, 4 cases of cerbral palsy and others. The results are briefly summarized in the following :
1. In general the basic metabolism is at the lower limit of the normal level.
2. Generally speaking, the relative metabolic rate (RMR) is high in the gait of those handicapped with lower extremeties, and this is especially so in cerbral palsy.
3. The reason of a markedly low RMR in poliomyelitis when using the affected limbs for work lies in the fact that the patient is not working diligently.
4. The labor index (RMR × minutes) per day proved to be 400-1, 300.
5. The total calory consumption per day was between 1, 100 and 2, 400 Calories, and in the four cases whose calory consumption exceeded over 2, 200 Calories of the diet given, they were supplementing themselves with the food of their own choice.

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A scientific study was undertaken from the medical standpoint in order to ascertain the influence on physical fitness of student using bicycles in attending school. Subjects selected for the survey were students attending the Ageo High School, Saitama-ken where school attendance rate on bicycles are said to be the highest in the vicinity of Tokyo.
A preliminary survey of actual conditions on 767 students by the questionaire method were made : the distance travelled in transit from house to school, age at which subject first started to ride on bicycle, kind of bicycle used, whether subject encountered any accident, experience in cycling as a sport.
From among the aforementioned 767 students, 105 students who did not belong to any sports club were selected for the study, and an additional 55 students, also, not belonging to any sports club and attending school on foot were selected as controls. Morphological and functional investigations were made, and also physical fitness tests and motor ability tests specified by the Ministry of Education were performed.
A. Results of survey by questionoires.
1.45-48% of the students attending the Ageo High School went to school on bicycles. The age ranges from which bicycle riding was started were 6-8 years in the boys and 9-10 years in the girls. Approximately 50% of students were able to ride on bicycles. (Fig. 1)
2. Approximately 60% of the boys were using light bicycles, whereas, 60% of the girls were using ordinary practical use type bicycles. (Table 3)
3. Approximately 50% of the boys had experience in cycling over 50 km., and approximately 30% of the girls had cycling experience before they were in the 3rd year of high school. (Table 2.)
4. Accident rates were 14. 8% in the boys and 19.1% in the girls. (Table 4.)
B. Results of physical fitness test and motor ability test.
1. No significant difference in morphological development was observed between students attending school on bicycle and those attending school on foot.
2. Regarding leg muscle strength, the bicycle students were superior to foot students. This is thought to be due to the development of the extensor muscles resulting from pedalling. No significant differences were found in the other functio-nal aspects.
3. Physical fitness tests revealed that the bicycle students were superior to the foot students regarding agility and flexibility, however, results of step test were not always in favor of the bicycle students. (Table 6.)
4. Motor ability test revealed no significant difference between the bicycle group and the foot group. Consequently, evaluation of results of physical fitness and motor ability tests was“low B”. (Table 6. 8.)
5. Results of physical fitness test and motor ability tests were superior in the long distance bicycle students than in the short distance group. This is thought to be due to the influence of more physical exertion on the former group than the latter group. (Fig. 2. 3.)
6. From the above results, it is assumed that bicycle riding only as a means of transit from house to school does not significantly influence physical fitness. In order to use bicycles as a means of improving physical fitness, it is necessary to go about it more scientifically.

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In grip strength a subject being ordered to show one-third, one-second and twothird of his own maximum value after checking his maximum, the value he shows is not always the same as the ordered value. The Discrepancy Index was determined by the grade of the difference between the ordered value mentioned above and the value showed actually.
For 2117 subjects composed of both sexes our experiment was performed.
1) The possibility of training effect for one-third and two-third of their own maximum value existed but little for one-second.
2) Up to 16 years of age the training effect increased with their physical development, but after 17 years remarkable change of their grading ability was not found.
3) There existed no relation between the experimental results of one-third value and two-third, between the left hands and the right, and between the Discrepancy Index of pre-training and post-training.
4) The larger maximum value of grip strength became, the smaller the Discrepancy Index was. Sometimes in the individuals who have larger maximum value, the more training effect was recognized.
5) The champions of weight-lifting, Kendo and volleyball showed better results than those of the control groups.

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In this report the roentgenograms of the corpus vertebrae, the disci intervertebrales of those having the good flexibility and poor flexibility were observed. Particularly the actions of the connected muscles, when the maximum trunk-flexion and extension were taken, were compared between two groups, and the factors that were supposed to have produced the difference of the trunk flexibility between the individuals were discussed.
Results are in summary as follows ;
The shrinking and extension appear in the disci intervertebrales when the maximum flexion and extension were taken. For the trunk flexion in then rear side of the disci intervertebrales, for the trunke xtension in the front side, for the left side-ward bend in the right side, and for the right side-ward bend in the left side of one, that is, in the extension of the disci intervertebrales at the opposite side to bending the differences were observed. Moreover they were appeared in the disci intervertebrales of the vertebrae lumbales remarkably, and in the group of poor flexibillty the extension of the disci intervertebrales was appeared less than in the group of good flexibility.

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