The Effect of Hypoxic Training Upon the Speed of Sprint Freestyle in High School Competitive Swimming Page: 9
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9
group used hypoxic breathing, while the other used normal
breathing techniques. It was concluded that the hypoxic
group had a greater efficiency in the extraction of oxygen.
In checking pulse rates for the two types of breathing tech-
niques, Counsilman found a definite difference in increase of
heart rates. The group breathing every two arm cycles was
only 3.0 beats per minute greater than the group breathing
normally, but those breathing every third cycle were 6.9
beats greater in a series of 5 x 200-yard swims. In a series
of 10 x 100-yard swims the third cycle group posted a differ-
ence of 13.8 beats per minute. Assuming that an increased
oxygen debt is desired, the higher pulse rate would be
feasible (2).
Counsilman states that as distances swam are shortened
and the intensity increased there is an increase in stress,
heart rate, and oxygen debt. The oxygen-carrying ability of
the blood is increased by increasing the red blood cell count.
It has been found that red blood cell production is stimu-
lated by low oxygen levels. Also, he has found trained per-
sons able to create high blood lactate levels. Therefore,
trained persons could exercise longer than those whose toler-
ance of lactate level is low (3) .
An important principle in athletics is that of specific
training. One must drill and exercise in such a manner so
as to create the desired effects for the final performance.
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Young, William Lee. The Effect of Hypoxic Training Upon the Speed of Sprint Freestyle in High School Competitive Swimming, thesis, August 1976; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc504335/m1/13/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .