As abruptly as the plane had climbed — at 7,000 feet per minute, more than twice the rate of takeoff — its recorded speed declined, dropping almost instantaneously to 60 knots, the minimum velocity recognized by the plane's computers.
Although the engine horsepower increased from 131,200 to 133,000, her speed declined slightly from 32.5-31.2 kn on trials because of the increase in her displacement to 41300 LT.
These measures were observed to decrease systematically as the speed declined, so that the race-walkers were least different compared to the controls (p < 0.05).
Unadjusted results showed that usual walking speed declined by 0.01 m/s and grip strength by 0.54 kg (men) and 0.30 kg (women) per year.
Also, and very clearly so, qualitatively similar observations were made in all other athlete groups, but the size of differences compared to the control participants became smaller as the discipline-specific speed declined.
However, Kuh et al. (48) found that midlife changes in fluid cognition predicted levels of physical performance 10 years after onset of cognitive impairment, and Buracchio et al. (34) found that walking speed declined 12 years before onset of cognitive impairment.
