Nascimento Marcelo de Maio, Gouveia Élvio Rúbio, Gouveia Bruna R, Marques Adilson, Marconcin Priscila, França Cíntia, Ihle Andreas
Department of Physical Education, Federal University of Vale do São Francisco, Petrolina 56304-917, Brazil.
Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal.
Geriatrics (Basel). 2022 Jul 7;7(4):73. doi: 10.3390/geriatrics7040073.
With vulnerable aging, gait speed (GS) undergoes progressive changes, becoming slower. In this process, cognitive performance (CP) and physical function (PF) both play an important role. This study aims (1) to investigate the association between CP and PF with GS and (2) to examine whether CP and PF mediate the association between age and GS in a large sample of Brazilian older adults.
A cross-sectional study analyzed 697 individuals (mean age 70.35 ± 6.86 years) from the state of Amazonas. The CP was evaluated by the COGTEL test battery, PF by the Senior Fitness Test battery, and GS with the 50-foot Walk Test.
Older adults with a lower CP and PF had a 70% and 86% chance of slow GS, respectively. When CP and PF were placed simultaneously as mediators, the direct effect estimated by the model revealed a non-significant relationship between age and GS. Specifically, CP and PF mediated the association between age and GS, at approximately 12% and 98%, respectively.
CP and PF show the potential to estimate GS performance among older adults. Moreover, CP and PF indicated a negative and direct association between age and slow GS, especially PF.
随着衰老加剧，步速（GS）会逐渐发生变化，变得更慢。在此过程中，认知表现（CP）和身体功能（PF）都起着重要作用。本研究旨在（1）调查CP和PF与GS之间的关联，以及（2）在大量巴西老年人样本中检验CP和PF是否介导年龄与GS之间的关联。
一项横断面研究分析了来自亚马孙州的697名个体（平均年龄70.35±6.86岁）。CP通过COGTEL测试组进行评估，PF通过老年健身测试组进行评估，GS通过50英尺步行测试进行评估。
CP和PF较低的老年人步速缓慢的几率分别为70%和86%。当将CP和PF同时作为中介变量时，模型估计的直接效应显示年龄与GS之间无显著关系。具体而言，CP和PF分别介导了年龄与GS之间约12%和98%的关联。
CP和PF显示出估计老年人GS表现的潜力。此外，CP和PF表明年龄与步速缓慢之间存在负向直接关联，尤其是PF。
