McNair, P.J.; Colvin, M.; Reid, D. (February 2011). "Predicting maximal strength of quadriceps from submaximal performance in individuals with knee joint osteoarthritis". Arthritis Care & Research. 63 (2): 216–222. doi:10.1002/acr.20368. PMID20890972. S2CID205221382.
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Knutzen, Kathleen; Brilla, Lorraine; Caine, Dennis (August 1999). "Validity of 1RM Prediction Equations for Older Adults". The Journal of Strength & Conditioning Research. 13 (3): Vol 13, Issue 3, Page 242–246. Retrieved 11 July 2014.
McNair, P.J.; Colvin, M.; Reid, D. (February 2011). "Predicting maximal strength of quadriceps from submaximal performance in individuals with knee joint osteoarthritis". Arthritis Care & Research. 63 (2): 216–222. doi:10.1002/acr.20368. PMID20890972. S2CID205221382.
McNair, P.J.; Colvin, M.; Reid, D. (February 2011). "Predicting maximal strength of quadriceps from submaximal performance in individuals with knee joint osteoarthritis". Arthritis Care & Research. 63 (2): 216–222. doi:10.1002/acr.20368. PMID20890972. S2CID205221382.