confirm the fatigue curve as a measure of Production and Appli-
cation. Average Production has been noted in sequence by innings
above. Pulse rates as an index of condition were taken before the
production of the fatigue curves, immediately afterwards, after
two, four, and six minutes rest. The average sum of pulse rates
per curve are listed below with the average Production of each day.
They could be plotted into a curve of improvement with Produc-
tion up 62.72% and Costs down 5.52%.
1/20 1/21 1/22 1/28 1/26 1/27 1/28 1/29 2/1 2/2

Production up 279 339 366 3872 3880 410 426 488 488 454—62.72%
Costs—Pulse rate down 471 473 498 500 481 494 489 498 464 445— 5.52%

3. Graduate Students Series of Fatigue Curves
June 15 to June 24, 1942

*

Thirty individuals, male and female, seventeen up to sixty years
of age, each one curve daily for ten days—300 curves demonstrate

1. Decline of efforts because of fatigue.

2. Increased Production with better training.

3. Better conditioning with fewer heart beats and shorter re-
covery time.
Below is found listed the average repetitions of 300 curves inning

by inning.

Inning 1 2 8 4 5 Cee 8 9 10 Average Curve
1. Average 380.8 28.9 27.5 26.0 24.9 24.2 28.8 22.4 21.4 20.5 249.4 100%

JUNC 15 52163 AT Be 19. 22.88 BA OR 26

2. Production up 220 2385 288 252 246 250 254 268 258 271 ‘up 28.86%
8. Heartbeats down 562 555 553 541 588 540 535 545 548 526 down 6.41%

4. University of Pittsburgh Engineers—
Tested W eekly —Ten Weeks

The tests in the physical conditioning course for 570 Pitt Engi-
neers during the summer session followed the established patterns.
After the first two weeks the students were enthusiastic about the
benefits. To get actual figures, the Tuesday afternoon group, with
fifty four participants, was given the fatigue curve tests for ten
different weeks. This could be considered a good cross section of
all participants. ‘T'wo factors, Production and Costs, were plotted
into the curves of improvement shown in Figures 5 and 6. Each
student produced his fatigue curve in each test for Production.

27