The aim of this study was to translate and culturally adapt the Fear of Falling Avoidance Behavior Questionnaire (FFABQ) into Brazilian–Portuguese (FFABQ-B), and to examine its reliability and validity in Brazilian older adults. The FFABQ-B was translated and tested in 10 Brazilian older adults. We assessed 52 community-dwellers, 68.7 (±6.2) years, using the FFABQ-B, BERG Balance Scale, Activities-specific Balance Confidence Scale, Falls Efficacy Scale, 6-Minute Walk Test, Timed Up and Go test, and activity monitor. Internal consistency, test–retest reliability, construct validity, and floor and ceiling effects were analyzed. The FFABQ-B had adequate internal consistency (Cronbach’s α = .90) and test–retest reliability (intraclass correlation coefficient = .81; 95% confidence interval [.68, .90]). The FFABQ-B was associated with 6-Minute Walk Test, Timed Up and Go, BERG Balance Scale, physical activity time (p < .05), Activities-specific Balance Confidence scale, and Falls Efficacy Scale (p < .001). The FFABQ-B is both reliable and valid to assess avoidance behavior in activities and participation due to fear of falling in Brazilian community-dwelling older adults.

本研究的目的是将害怕跌倒回避行为问卷 (FFABQ) 翻译成巴西-葡萄牙语 (FFABQ-B) 并在文化上进行改编，并检验其在巴西老年人中的信度和效度。FFABQ-B 在 10 名巴西老年人中进行了翻译和测试。我们评估了 52 名社区居民，68.7 (±6.2) 岁，使用 FFABQ-B、BERG 平衡量表、活动特定平衡信心量表、跌倒效能量表、6 分钟步行测试、定时起步测试和活动监测器. 分析了内部一致性、重测信度、结构效度以及下限和上限效应。FFABQ-B 具有足够的内部一致性（Cronbach's α = .90）和重测信度（组内相关系数 = .81；95% 置信区间 [.68, .90]）。FFABQ-B 与 6 分钟步行测试相关，p  < .05)、特定活动平衡信心量表和跌倒效能量表 ( p  < .001)。FFABQ-B 既可靠又有效，可用于评估巴西社区老年人因害怕跌倒而在活动和参与中的回避行为。