Conclusions The Timed Up- and -Go test measure appears not to be a useful measure of physical functioning for the driving outcomes included here .
The Rapid Pace Walk may be useful in studies of driving ability and exposure .
Background Improving physical functioning may be a future intervention to keep older adults driving safely longer as it can help maintain both physical and cognitive health longer .
This systematic review assesses the evidence on the association between three physical functioning measures : the Short Physical Performance Battery , the Timed Up- and -Go test , and the Rapid Pace Walk with driving outcomes in older adults .
Aerobic exercise training increases brain volume in aging humans.
BACKGROUND The present study examined whether aerobic fitness training of older humans can increase brain volume in regions associated with age-related decline in both brain structure and cognition . METHODS Fifty-nine healthy but sedentary community-dwelling volunteers , aged 60 - 79 years , participated in the 6-month r and omized clinical trial . Half of the older adults served in the aerobic training group , the other half of the older adults participated in the toning and stretching control group .  Twenty young adults served as controls for the magnetic resonance imaging ( MRI ) , and did not participate in the exercise intervention . High spatial resolution estimates of gray and white matter volume , derived from 3D spoiled gradient recalled acquisition MRI images , were collected before and after the 6-month fitness intervention . Estimates of maximal oxygen uptake ( VO2 ) were also obtained . RESULTS Significant increases in brain volume , in both gray and white matter regions , were found as a function of fitness training for the older adults who participated in the aerobic fitness training but not for the older adults who participated in the stretching and toning ( nonaerobic ) control group . As predicted , no significant changes in either gray or white matter volume were detected for our younger participants . CONCLUSIONS These results suggest that cardiovascular fitness is associated with the sparing of brain tissue in aging humans . Furthermore , these results suggest a strong biological basis for the role of aerobic fitness in maintaining and enhancing central nervous system health and cognitive functioning in older adults
Conclusions The Timed Up- and -Go test measure appears not to be a useful measure of physical functioning for the driving outcomes included here .
The Rapid Pace Walk may be useful in studies of driving ability and exposure .
Background Improving physical functioning may be a future intervention to keep older adults driving safely longer as it can help maintain both physical and cognitive health longer .
This systematic review assesses the evidence on the association between three physical functioning measures : the Short Physical Performance Battery , the Timed Up- and -Go test , and the Rapid Pace Walk with driving outcomes in older adults .