I did some work a few years ago with grounds keepers for a large school district. Most of the interventions were similar to what we would recommend for an industrial setting: choosing the right tools, handle and grip issues, minor modifications on riding equipment (seats, steps, grab handles, etc.), replacing worn out power tools that vibrated excessiely, etc. There are quite a lot of products out there.
My reference to staging describes the worker evaluating the task first, then putting tools, and equipment in ‘best locations’ to complete the work. For instance, providing all the tools necessary at a site prior to starting the task, rather than just plunging right in and then finding that one has to go back and forth to a tool shed or truck to complete the work. The back and forth issue is more physically demanding, and not very productive.
Re: David’s presentation, I can send it later, if you would like.