I came across the article and you posted ONE paragraph of the article. Here are the next four.
Lee’s upper body strength is another matter altogether and, when understood
from a sport science perspective, partially explains his on-screen appeal.
Once again, according to the program used during his 1965 stay in Hong Kong,
Lee performed bicep curls using a weight of 80 pounds and 8 repetitions. This
would equate to an estimated 1 repetition maximum of 110 pounds and would
place him in the 100th percentile for the 121-140 pound weight class.From a
training perspective, one must question how a discrepancy of this proportion,
between his upper and lower body strength, evolved in Lee’s training.
Nevertheless, it demonstrates that his upper body strength was developed to
its maximum potential.
Numerous observers of Bruce Lee, such as deceased Kenpo master Ed Parker,
have stated Lee was perhaps the strongest “pound for pound” martial artist.
Sport science can confirm this possibility. Numerous assessments of athletes
throughout the past few decades have confirmed that smaller athletes are
proportionately stronger than larger ones.This is due to the fact that a
muscle’s maximum contractile force is proportional to its cross-sectional
area.In laymen’s terms, this means that a smaller athlete has a higher
strength to mass ratio than larger athletes.
Stated practically, as body size increases, body mass increases more rapidly
than does muscle strength. In a colloquial sense, it could be said this is
similar to the “law of diminishing returns.” Certain martial art film stars
such as Jean Claude Van Damme and Jeff Speakman may look better due to their
mass, but their actual strength, in proportion to body weight, would be less
than a relatively light person such as Lee.Incredible speed is inherent to
superior strength at a low body weight.
Since Lee never weighed more than 143 pounds yet possessed superior upper
body strength in the 100th percentile, this would account for the lightening
speed he demonstrated on film. With more mass, he would not have been as fast
and would not have appeared so on film.