The complete article "Detection of Physical Activity Types Using Triaxial Accelerometers" can be downloaded at the website of the "Journal of Physical Activity and Health", Volume 11, Issue 1, pp. 76-84 (charges may apply).
J. Skotte, M. Korshøj, J. Kristiansen, C. Hanisch, A. Holtermann:
Detection of Physical Activity Types Using Triaxial Accelerometers.
in: Journal of Physical Activity and Health, Volume 11, Issue 1 2014. pages 76-84, Project number: F 2282, DOI: 10.1123/jpah.2011-0347