Effects of a multi-modal static and dynamic balance and hand function training program on multi-dimensional balance ability, hand function, and life-space mobility in rural older adults: protocol for a randomized controlled trial. - Yang, Xinyu; Li, Shasha; Xu, Xiangdong; Guo, Guojing; Song, Xiaofang; Sun, Yashuang; Shi, Mengxue; Ren, Canqi (BMC Sports Science, Medicine & Rehabilitation, 2025)