Despite Canada's boycott of the 1980 Olympic Games in Moscow, she dominated post-Olympic competition in the summer of 1980, winning several meets, and finishing second in the 100 m to Marlies Göhr, and third in the 200 m behind Bärbel Wöckel at the final stop in Zürich.

Once again she improved upon the Canadian records for 100 m (11.00) and 200 m (22.25),[1] She injured her sciatic nerve in the off-season training for the 1983 season, which troubled her for the rest of her career.

[citation needed] Taylor-Issajenko was a part of the doping regime of George Astaphan, the physician who supplied Ben Johnson with stanazolol.

[2] After Issajenko's training partner Johnson tested positive for stanozolol in 1988, she testified in the Dubin Inquiry and gave a detailed account of widespread substance abuse in athletics which included her reading from her diary.

She later told her story to writers Martin O'Malley and Karen O'Reilly for her biography Running Risks which was a detailed tell-all of her sprinting experiences and her dealings with performance-enhancing drugs.

[citation needed] Note: In 1987, at the World Indoor Championships, Issajenko ran 7.08sec to win the silver medal behind Dutch Sprinter, Nelli Cooman.