Bauhaus-Universität Weimar

20 
Walter IV. Davis, 
Increase in the dimensions of the arms. 
Table VI. shows the girth measurements taken at the initial and final 
tests and the increase due to the practice. The subject’s age and weight 
are given as a means of control. The measurements are in millimeters. 
Table VI. 
Increase in arm girths. 
Biceps. 
Forearm. 
Subject. 
Age. 
Right. 
Left. 
Right. 
Left. 
Wt. in 
kilos. 
C. 
R. 
C. 
R. 
C. 
R. 
c: 
R. 
G 
f Initial. 
283 
228 
274 
226 
259 
255 
256 
246 
56-3. 
28 
] Final. 
288 
232 
269 
226 
260 
255 
254 
246 
56.8 
(Gain. 
5 
4 
—s 
0 
i 
0 
—2 
0 
0.5 
H. 1 
f Initial. 
270 
238 
265 
237 
252 
247 
250 
248 
66.6 
26 'j 
: Final. 
283 
246 
271 
241 
265 
257 
260 
252 
67.2 
[ Gain. 
13 
8 
6 
4 
13 
10 
10 
4 
0.6 
B. I 
f Initial. 
287 
249 
285 
252 
246 
237 
260 
252 
75-7 
29 j 
Final. 
293 
255 
296 
256 
259 
249 
265 
257 
75-r 
[ Gain. 
6 
6 
ii 
4 
13 
12 
5 
5 
—0.6 
i. I 
' Initial. 
230 
275 
317 
275 
283 
275 
281 
272 
71.6 
26 j 
Final. 
238 
281 
320 
277 
283 
277 
277 
270 
71.6 
. Gain. 
8 
6 
3 
2 
0 
2 
—4 
—2 
0 
J. J 
26 1 
” Initial. 
310 
265 
302 
260 
270 
262 
265 
255 
69.3 
Final. 
312 
264 
302 
262 
273 
265 
260 
260 
69-3 
Gain. 
2 
—i 
0 
2 
3 
3 
i 
5 
O 
K. ! 
r Initial. 
276 
235 
260 
220 
252 
240 
243 
232 
56.1 
24 I 
Final. 
280 
239 
262 
230 
251 
240 
246 
235 
56.1 
_ Gain. 
4 
4 
2 
10 
—i 
0 
3 
3 
O 
Av. gain. 
6-3 
4-5 
2.8 
3-6 
4.8 
4-1 
2.1 
2-5 
0.1 
C = 
Contracted. 
R = Relaxed. 
The results showed that the practice had effected an increase in the 
girth measurements. For example, G. ’s initial measurement for the right 
biceps contracted was 283, relaxed it was 228. His final measurements 
for the right biceps were, contracted 288, relaxed 232. The gain in the 
biceps contracted was 5'”mand relaxed 4mm, as the result of his two weeks’ 
practice. 
There was no marked gain in the weight of any of the subjects that 
might account for the increase in girth. The average gain was o. 1 kilo, 
which is insignificant, while B., who lost weight, made as large gains in 
girth as any. 
The gains in girth measurements were greatest in this order ; right 
biceps, right forearm, left biceps, left forearm. The right arm gained 
by direct practice but though the right increased twice as much as the
        

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