Hello Cheng.

The largest Norwegian studies have used the Troiano cut points, so in the Norwegian context I think that would be the way to go. Following this logic the answer to your question would be to use the same cut points as larger population studies have used in the context that is relevant for your study.

Best,

Ingar

For the Actigraph model, I did a simple review using the descriptors "accelerometer", "obesity" and "adults". The most frequently mentioned were Freedson 1998, Troiano 2008 and Mathews CE. I used my research Troiano et al. 2008.

Hi Cheng Li,

The most used adults' cut points in ActiGraph GT3X/+ accelerometers are those proposed by Freedson et al. (1998). Although they could not be the most accurate, you have to consider collecting information using the same methods, so that the data can be comparable.

For helping you in your decisions, please see the attached file.

Good work.

Ricardo Gonçalves