5. Individual Series of Fatigue Curves

One individual, aged 47, three curves daily for thirty one days,
ninety three curves. This series, in retrospect, in addition to the
research angle proved a conditioning course. The writer was
taken by all stairways prior to these workouts. Afterwards the
writer took all stairways. It is no myth that a good conditioning
course will cause good effects continuously for six months after
the course is discontinued—for many people anyway.

Some of the personal feelings of increased physical reserves in-
cluded the legs insisting on running when the opportunity offered
itself. This desire to run may be readily imagined when one recalls
how the legs have been trained and conditioned in spot running.
It is one of those things where the muscles want to carry on as a
result of habit.

The following arrangement of numbers in this series illustrates
improved production and conditioning. Figure 11 illustrates the
improved Production and Figure 12 illustrates the lowered Costs
in the seventy-fifth test as compared with the twenty-first test.

First Curve—First of each week

5/14/42 5/21 5/28 6/4 6/18
Production 262 382 380 861 879 — sup 44.65%
Application 80% 50% 90% 60% 60%
Pulse Rates 576 558 468 400 852 — down 87.15%

Three Curves daily—Twenty-one per week

5/14 to 5/20 5/21to5/27 5/28to6/8 6/4to 6/10
Production 6679 7435 7848 7543— up 12.94%
Heartbeats 15432 14056 12452 11570 — down 25.02%

The improvements in Production and in Costs are recorded and
apparent as shown in Figures 11 and 12. |

The improved conditioning as indicated by less heart beats with
greater production stands out. Less heartbeats are accounted for
by a slower heart rate in the better conditioned, and quicker
return to the original pulse rate. The slower rate and the aggregate
of the five pulse rates are noted above.

A schedule of recoveries in sequence as listed below illustrates
improving condition. In the first week recovery of the original
heart rate within twenty-eight minutes came only four times in
the production of the twenty-one curves. In the second week re-
covery within twenty-eight minutes came nine times in twenty-one
attempts. In the third week recovery within twenty-eight minutes

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