In several ways, we extended previous qualitative and quantitative
analyses of the literature on the fitness-cognition relationship (Dustman
et al., 1994; Etnier et al., 1997). First, we examined the theoretical
proposals that have been made with regard to the processes
expected to benefit most from enhancements in aerobic fitness. Second,
we focused specifically on randomized fitness intervention trials
that included control groups and on fitness training that extended from
several months to several years. Third, we included studies conducted
from 1966 to 2001 in our analyses. Finally, we focused on older
adults, from 55 to 80 years of age. Identifying the interventions that
have shown promise in enhancing the cognitive vitality of this large
and growing segment of the population is particularly important given
the demonstrated decline in a number of aspects of cognition across
the adult life span.
In several ways, we extended previous qualitative and quantitativeanalyses of the literature on the fitness-cognition relationship (Dustmanet al., 1994; Etnier et al., 1997). First, we examined the theoreticalproposals that have been made with regard to the processesexpected to benefit most from enhancements in aerobic fitness. Second,we focused specifically on randomized fitness intervention trialsthat included control groups and on fitness training that extended fromseveral months to several years. Third, we included studies conductedfrom 1966 to 2001 in our analyses. Finally, we focused on olderadults, from 55 to 80 years of age. Identifying the interventions thathave shown promise in enhancing the cognitive vitality of this largeand growing segment of the population is particularly important giventhe demonstrated decline in a number of aspects of cognition acrossthe adult life span.
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