• BalanceMate: Manage, Pre-process, and Process postural data
  • About this book
    • Managing
      • Merge_posData
      • Epoch_SliceR
      • Time_StampeR
    • Pre-Process Data
      • Butterworth_it
    • Process Data
      • Compute_Postural_Indicators
      • CoPX_ComputeR
      • CoPY_ComputeR
      • SPL_ComputeR
      • EllipseArea_ComputeR
      • SD_CoPX_ComputeR
      • SD_CoPY_ComputeR
      • Spaghetti plot
      • Spaghetti + Ellipse plot
      • Glossary
  • 1 Managing
    • 1.1 Text output of AMTI Netforce
    • 1.2 A generic example
      • 1.2.1 Merge_PosData: Merge your postural file
      • 1.2.2 Time_StampeR: Annotate your data file with periods of interest
      • 1.2.3 Epoch_SliceR: Synthetise your data into time-bins
  • 2 Pre-Processing
    • 2.0.1 A short digression on signals
    • 2.0.2 Butterworth_it: apply a custom Butterworth filter to your signal
  • 3 Processing
    • 3.1 Computations
      • CoPX_ComputeR
      • CoPY_ComputeR
      • SPL_ComputeR
      • EllipseArea_ComputeR
      • SD_CoP_ComputeR
    • 3.2 Visualise
      • 3.2.1 SpaghettEllipse : Plot sample data
      • 3.2.2 Exploring some possibilities for visualisation
  • 4 Recommended Flowchart
    • 4.0.1 Concluding notes
    • 4.0.2 Aknowledgments
  • References
  • Published with bookdown

BalanceMate: a Package to manage, pre-process, and process postural data

Chapter 4 Recommended Flowchart

For AMTI users, the recommended workflow is as follow:

Example of workflow for AMTI users
Example of workflow for AMTI users

However, non-AMTI users might want to format their data to match the expected data structure, 6 columns with Fx, Fy, Fz, Mx, My, Mz:

install.packages("/Users/sylviemoneger/Desktop/BalanceMate_0.0.0.9000.tar.gz", repos = NULL, type = "source")

library(BalanceMate)

path_to_data <- system.file("extdata", package = "BalanceMate") #Find subdirectory of Example data in the original .txt format exported from AMTI Netforce software

Data <- Merge_PosData(path_to_data, SampleRate = 100, SessionDuration = 100) # Input correct arguments: in this example, the protocol was 331seconds long and the sample rate was 100Hz

head(Data[, c(1:6)])
##        Fx      Fy       Fz      Mx      My       Mz
## 1 7.24049 7.22547 790.0556 5.47499 7.68121 -0.16553
## 2 7.46415 7.30759 789.6346 5.41001 7.61477 -0.14419
## 3 7.80475 7.35250 789.3054 5.34504 7.54834 -0.12477
## 4 7.60925 7.46016 789.3280 5.34504 7.54834 -0.16260
## 5 7.49666 6.98660 788.6198 5.34434 7.41616 -0.02562
## 6 7.42719 6.95055 788.2588 5.27937 7.34973 -0.07609

From there, users will be able to compute CoP (CoPX_ComputeR, CoPX_ComputeR), and then to use any other tools from the BalanceMate package: annotations, filtering, and postural indicators’ computation.


4.0.1 Concluding notes

The BalanceMate package was designed to provide a toolbox for postural analyses using forceplates. It was designed to be usable by researchers confronted with the lack of tools available for managing and processing postural data. However, this package does not cover deep and complex analyses. Although it can take your analyses one step further than BioAnalysis software, to some researchers, the package might only provide a base on which to work toward more elaborate and complex analyses.

If you believe there is an error in the package, or if you would like another feature to be added to this library, then please contact the author (moneger.jean@outlook.fr) and I will consider your corrections or requests.

4.0.2 Aknowledgments

I would like to thanks Chrystel Besche-Richard (Université de Reims Champagne-Ardenne, Laboratoire C2S), Laurence Chaby (Université Paris Cité, Laboratoire VAC), Dorine Vergilino-Perez (Université Paris Cité, Laboratoire VAC), Christelle Lemoine (Université Paris Cité, Laboratoire VAC) for providing the opportunity to develop this package and for helping me along the way.

Development of the package was supported by the laboratory Vision Action Cognition (VAC, URP 7326 - Institut de Psychologie, Université Paris Cité). The author thanks the VAC laboratory for funding this project and providing access to Force plates and softwares to test the package.

Image 1 Image 2
Vision, Action, Cognition Université Paris Cité