. Practical rowing with scull and sweep. ermammillary line. By averagingthese various measurements it was easy to constructa chart representing the average heart of the squad,and also to estimate the average variation. The following Table (VI) and Chart (VI) givethe measurements and variations of the averageheart of the entire squad. They show that therewas a progressive enlargement affecting both sidesof the heart during May and reaching its maximumearly in June. After this there was a considerableshrinkage, especially of the left side, both the leftborder and the apex beat receding towards t
. Practical rowing with scull and sweep. ermammillary line. By averagingthese various measurements it was easy to constructa chart representing the average heart of the squad,and also to estimate the average variation. The following Table (VI) and Chart (VI) givethe measurements and variations of the averageheart of the entire squad. They show that therewas a progressive enlargement affecting both sidesof the heart during May and reaching its maximumearly in June. After this there was a considerableshrinkage, especially of the left side, both the leftborder and the apex beat receding towards themedian line until their positions were not very TABLE VI. Average Heart Measurements of Squad. Datesof ^examinations. Si Apex beat. i Upper border. ij ii II 1 u May 9-17 . II cm. cm. 3-9 cm, 3-9 May 18-26 . II 44 5I 17-9 4-4 June 2-8 ... 12 97 June 17 ... 12 9-9 57 3-2 June 29 before race 12 9-5 1 5-5 3-8 130 Practical Roxmiig. ! i I I au r- CD CO I i I Q) 00 c\j 1^. C13 — CM »;t. (0 to ® ^ 3 >< The Effects of Training 131 different from those of early May. The right sideof the heart also showed shrinkage, but to a lessdegree than the left. The position of the upperborder varied considerably in the different exami-nations, depending apparently partly on the fulnessof the stomach and partly on the depth of respira-tion. The relative rise and fall of the apex beatcould not be followed as closely as its lateral move-ment, owing to the ribs. The period of the greatest enlargement corre-sponded to the period of the most arduous work,late in May and early in June, when the finalselection of men was being made, and when con-sequently every man was pulling his the individual strain was greater at thistime, because the crew had not yet learned to pullas a unit. Then, too, as already mentioned, theweather was very unfavorable, and the effort re-quired
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