NAD+-Precursor Supplementation With L-Tryptophan, Nicotinic Acid, and Nicotinamide Does Not Affect Mitochondrial Function or Skeletal Muscle Function in Physically Compromised Older Adults

NJ Connell, Lotte Grevendonk, CE Fealy, Esther Moonen‐Kornips, YMH Bruls, VB Schrauwen-Hinderling, J de Vogel, Robert Hageman, Jan M.W. Geurts, Rubén Zapata‐Pérez, Riekelt H. Houtkooper, Bas Havekes, Joris Hoeks, Patrick Schrauwen