Dear Dragan,

I have acquired and analyzed postural data of body motion with different sensors and techniques: stabilograms, measuring 2D deviations of the Centre of Mass; kinetics with a 6-camera system, measuring 3D spatio-temporal features of different limb motion and further transformed to 2D. In both techniques and analyses, the aim is to examine the trajectories of data, so you would need to clarify the motor functions/task which would allow you to choose one or another method/technique. Actually, several developers offer commercial tools for examine the data, but i prefer to acquire raw data and apply different tools (i.e. Matlab post-hocs) and methods available in the literature to examine physiological data.

PD (I attach you some info about 2D analysis of COM, sorry but its in spanish)

Best, 

Martin

Research Análisis del Sistema de Control Postural mediante técnicas d...

 Dear Martin,

Thank you for answer. What about methods in non-motion mode? Some static measuring protocol with camera to determine postural data?

Dear Dragan,

We have developed a validation of a free software CVMob available in https://sites.google.com/site/cvmobufba/ to gait analysis, now in submission fase of the manuscript. In our results this is a easy to apply in every movies 2D from every mobile or camera. This is proper to analysis static and dynamic posture.  

As an occupational therapist, I did posture analysis with a 2D camera as part of a multi-disciplinary pain clinic evaluation.  It's easy to do and gives objective data to show change/improvement in the pt's posture.  It definitely gets the patient's attention when they see their incorrect posture.  If you would like the form, please email me. 

Dear Dragan:

Are you going to measure the quality or quantity of the movement? Regarding the quality (e.g., quiet standing, excessive sway of the trunk during standing, number of steps during walking), it can be done through observation from videos. In terms of the quantity of movement (Kinematics), it is much more challenging due to the distortion of the camera view and low frame rates of the videos. I have attached an article from my colleague who has measured human Kinematics from a 2-D camera system. Recently, many research groups also use the Microsoft Kinect camera to measure body movement. You can search them from Google scholar. 

Hope this helps.

www.ncbi.nlm.nih.gov/pubmed/24756467

Dear Yijian,

I am going to measure quiet standing and position of spine, legs in 2D so I need some protocol or position of the body, for testing.

I recommend using the CVMob free system available at https://sites.google.com/site/cvmobufba/ that has been validated for gait evaluation (http://dx.doi.org/10.17267/2238-2704rpf.v7i4.1648 ) and for postural evaluation (http://dx.doi.org/10.1097/JCE.0000000000000226).