"I haven't had any setbacks, thankfully," he said Friday, attributing his progress to a regimen of exercise and anti-inflammatory medicine.
The exercise portion has benefited Ishikawa unexpectedly.
"I was seeing abs I didn't know I had," said Ishikawa, who became eligible for activation from the DL on Tuesday. "It was pretty cool."
Ishikawa played both first base and left field for Sacramento, which is visiting Salt Lake City this weekend. He was allowed to skip that trip since the chilly weather there might bother his back.
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.