The purpose of this study was to determine the test–retest reliability and construct validity of tools to assess how balance confidence (BC) and state anxiety (SA) change with progressively increasing walking speeds. Sixteen young adults and 15 older adults attended two sessions. Individuals began walking on a treadmill at 0.4 m/s Participants chose to continue increasing the treadmill speed (up to 2.0 m/s) or to discontinue the protocol while rating their BC and SA after completing each speed. BC at participants’ fastest speed attempted demonstrated high and moderate test–retest reliability among young (intraclass correlation coefficient [ICC] = .908) and older adults (ICC = .704). SA for young adults and older adults was good (ICC = .833) and fair (ICC = .490), respectively. Our measures also correlated with measures of dynamic stability while walking for young (r = −.67, p = .008) and older adults (r = .54, p = .046). Our dynamic measures of BC and SA are valid and reliable in young and older adults.

本研究的目的是确定工具的重测信度和构建有效性，以评估平衡信心 (BC) 和状态焦虑 (SA) 如何随着步行速度的逐渐增加而变化。16 名年轻人和 15 名老年人参加了两次会议。个人开始以 0.4 m/s 的速度在跑步机上行走参与者选择继续增加跑步机速度（最高 2.0 m/s）或停止协议，同时在完成每个速度后评估他们的 BC 和 SA。以参与者最快速度尝试的 BC 在年轻人（组内相关系数 [ICC] = .908）和老年人（ICC = .704）中表现出高和中等的重测可靠性。年轻人和老年人的 SA 分别为良好 (ICC = .833) 和一般 (ICC = .490)。r  = −.67, p  = .008) 和老年人 ( r  = .54, p  = .046)。我们对 BC 和 SA 的动态测量在年轻人和老年人中有效且可靠。