Word: lifes
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Dates: during 1930-1939
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This Harvard experiment has for its precedent an interesting bit of research which was carried out in England. Drs. P. H. S. Hartely and G. F. Liewellyn investigated the records of the life span of the crews of Oxford and Cambridge Universities in England for a 100-year period...
Over the whole period (100 years), the life span of the oarsmen was much longer than the average life expectancy. The non-oarsmen were all healthy men accepted for life insurance...
...Life Span Increases...
...course, there is the point that oarsmen would naturally be stronger physically than the average men their age, besides getting good food, fresh air, and exercise. However, there was one gratifying fact learned from the investigation; while the life span of the oarsmen has heretofore always been much longer, the life span of the standard group (not oarsmen) during the last few years has been gradually growing longer, so that it now nearly approaches that of the oarsmen. This shows that the life span in general has been increasing...
These research workers say that the ideal comparison would be to compare the life span of the oarsmen with that of their contemporary fellow students, instead of comparing it with those who would not have the same advantages as to food, air, and exercise as these college oarsmen...