Reed Rebecca J, Lowrey Catherine R, Vallis Lori Ann
Department of Human Health and Nutritional Sciences, College of Biological Science, University of Guelph, Animal Science/Nutrition Building, Guelph, Ont., Canada N1G 2W1.
Gait Posture. 2006 Jun;23(4):486-91. doi: 10.1016/j.gaitpost.2005.06.010. Epub 2005 Aug 10.
Obstacle navigation during locomotion was investigated in older adults using an obstacle course paradigm under different ambient lighting conditions. Similar strategies for obstacle navigation were observed between the two age groups studied (middle-old: 75-85 years and old-old adults: 85 years and older), however old-old individuals were "less" successful at avoiding obstacles. Differences observed between the two age groups in obstacle course performance may be attributed to changes in spatial reference frames that occur with age and/or differences in perceived threat of obstacles in the travel path. Reduced lighting conditions and increasing age were also found to have significant affects on obstacle navigation.
利用障碍课程范式，在不同的环境光照条件下，对老年人在行走过程中的障碍导航进行了研究。在所研究的两个年龄组（中老年组：75 - 85岁和高龄组：85岁及以上）之间观察到了相似的障碍导航策略，然而高龄个体在避开障碍物方面“不太”成功。两个年龄组在障碍课程表现上观察到的差异可能归因于随着年龄增长而发生的空间参照系变化和/或行进路径中对障碍物感知威胁的差异。还发现光照条件降低和年龄增长对障碍导航有显著影响。
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