-- Robert Preidt
FRIDAY, Sept. 9 (HealthDay News) -- College football players
show significant gains in size, strength and power over time, but
smaller improvements in speed and agility, a new study says.
Researchers assessed the physical capabilities of 289 Division
III college players throughout their four- or five-year
From freshman to senior year, the players' body mass increased
an average of 21 pounds, their bench press strength increased by 31
percent, their squat strength increased by 36 percent and their
aerobic conditioning improved.
However, their 40-yard sprint time improved by an average of
only 0.2 seconds and their vertical jump height increased by about
While resistance training programs do appear effective in
improving players' strength and body mass, genetic factors may
limit the ability to significantly improve speed and jumping
ability, said lead author Jay R. Hoffman, of the University of
Central Florida in Orlando, and colleagues in a journal news
"Collegiate football players can become faster and jump higher, but the ability to transform a slow athlete to a fast one appears to be limited," the researchers concluded.
The study appears in the September issue of the
The Journal of Strength and Conditioning Research.
The American Academy of Orthopaedic Surgeons offers
football injury prevention tips.
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