The research is described here: http://actigraphy.medicoimpianti.it/actigraphy-analysis-project.html
As a sub project, there is the recording of wrist actigraphy sampled at one second epoch.
The first full year is available for download.
Send your request to firstname.lastname@example.org
the project about actigraphy entered his second phase as described in
I felt a needed step to complete the project as described in
I started a project as you may see in http://www.medicoimpianti.it/actigraphy-analysis-contest.html
May be it fits your search.