how well does the lowerback get worked as a synergist with
upperback / lat exercise like chin-ups , heavish DB rows 10 reps for work sets, horizontol rowing.
Doing deadlifts squats etc is out for a while due to manual labour. I could still go heavish on things like rows chins etc. How well do you think the lowerback will get worked doing this?
The work will consist of primarily wheelbarrowing 150lb-200lb (and shovelling , lifting blocks perhaps 55lb bags nothing particularly demanding. )
Any anecdotal input is very welcome.