TY  - RPRT
TI  - Regulating intensity using perceived exertion during extended exercise periods.
AU  - Jie Kang
AU  - Jay R Hoffman
AU  - Heather Walker
AU  - Edward C Chaloupka
AU  - Alan C Utter
PY  - 2003
DO  - 10.1007/s00421-003-0811-9
UR  - https://pubmed.ncbi.nlm.nih.gov/12712344/
ID  - 12712344
ER  -