Thanks. Based on the information of this article, I’d say that I’ve been doing RDL for years and always thought I’m performing SLDL. With the exception that the plates are always touching the ground at bottom position even though I don’t consider myself “unusually flexible” or having long arms as the article states. I see no reason whatsoever that any sprinter should do SLDL in place of RDL with rounding back at bottom. Do you?