Hi Jeff
I received a reply from Wayne Voller to your question......
Hi Jeff
thanks for your comments regarding the MSD study in window cleaners. I hope all that read it find something interesting. The comment regarding pole type is interesting. Obviously the questionnaire went out to all window cleaners, no matter what type of pole they were using. I imagine that the majority 3 years ago were using the heavier glassfibre designs more readily available at the time, but it is hard to say specifically. The observational studies were carried out using a typical 3 section (extending to 9 metre) glassfibre pole. The principles of control still are relevant, as as I mentioned, work posture and technique are the mostly likely contributing factors, though such things as pole weight may influence the amount of time they can be sued before muscular fatigue sets in. Anything I can do to help, please keep in touch
Wayne