Interaction between visual impairment and subjective cognitive complaints on physical activity impairment in U.S. older adults: NHANES 2005-2008.

"Declarations Ethics approval and consent to participateThis study included data from NHANES 2005–2008, which obtained ethics approval from the National Center for Health Statistics (Protocol #2005-06, Continuation of Protocol #2005-06). All methods were performed in accordance with the relevant guidelines and regulations (Declaration of Helsinki), and all participants provided informed consent. Consent for publicationNot Applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study was supported by grants from National Natural Science Foundation of China (No.82271079) and Startup Fund for Scientific Research of Fujian Medical University (No.2021QH2038)."