willy WONKA wrote:
I probably took too much time looking this up… but here we go:
1-mile run time displays a VERY strong negative relationship with VO2max. As VO2max increases, 1-mile run time decreases. The correlation coefficient is -0.91, thus 80% of the variation in 1-mile run time can be explained by VO2max (1). Here is the regression equation:
Time = 9.12 – 0.064*VO2(ml/kg/min)
According to this, a run time of 4:20 (4.33 min) would necessitate a VO2max of 75 ml/kg/min. Given LeBron’s weight of 250 lbs, that would equate to an absolute VO2max of 8.5 L/min. The highest ever recorded in an athlete was 7.5 L/min (2). I think one would be hard pressed to say that LeBron would have a VO2max as high as would be required for a man of his size to run a 4:20 mile.
Furthermore, if he was near the max of 7.5 L/min, that would yield a relative VO2max of 66 ml/kg/min. At his VO2max LeBron would be able to cover a mile in about 4:54 based on the regression equation.
*I did not calculate the range for 95% confidence (+/- 2 SD). I think the average is pretty good for this… sure he might require less VO2 than the average, but he could also require more VO2
References:
Foster C. (1983) VO2max and training indices as determinants of competitive running performance. Journal of Sports Sciences 1: 13-22
Wilmore JH, Haskell WL. (1972) Body composition and endurance capacity of professional football players 33(5): 547-567