TY - RPRT TI - Endogenous opioids may modulate catecholamine secretion during high intensity exercise. AU - T J Angelopoulos AU - B G Denys AU - C Weikart AU - S G Dasilva AU - T J Michael AU - R J Robertson PY - 1995 DO - 10.1007/bf00238563 UR - https://pubmed.ncbi.nlm.nih.gov/7607192/ ID - 7607192 ER -