Association of magnesium and vitamin D status with grip strength and fatigue in older adults: a 4-week observational study of geriatric participants undergoing rehabilitation.

"Declarations Conflict of interestAuthors EK, MK-F, CDGRCM, HAB-F, DSF have no relevant financial or non-financial interests to disclose. Statement of human and animal rightsThis study was approved by the Cantonal Ethical Commission of Bern, Switzerland (BASEC-ID 2017–01724). Informed consentInformed consent was obtained from all participants included in the study. Conflict of interest Authors EK, MK-F, CDGRCM, HAB-F, DSF have no relevant financial or non-financial interests to disclose."

"Funding Open access funding provided by University of Zurich. The PUSH study was funded by the Berner Klinik Foundation, Bern, Switzerland. The foundation is a non-profit organization with a focus on clinical rehabilitation. External funding was neither sought nor endured from previous research projects in the institution. Partial financial support was received from the Baugarten Stiftung by the “Centre Grant for Aging Research in the Extension of Healthy Life Expectancy and the Prevention of Sarcopenia”."

"Study registration: Clinicaltrials.gov, NCT03422263; registered February 5, 2018."