Although, if you're getting twinges then it not a good thing. Take care of your back you don't want to get a injury which will hold you back. If you're not going to wear a belt then I'd reduce the weight a little for a couple of workouts. Make sure you warm up plenty also.
Nick's right in saying that it's good to build up your core strength. Although 160kg is not light for you as you're only doing max 3 reps. I don't wear a belt on my warm up sets or when I'm working with approx. less than 50 -60% my max weight. |