Previously submitted to: JMIR mHealth and uHealth (no longer under consideration since Nov 05, 2020)
Date Submitted: Feb 15, 2020
Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.
Kinematic lab susp: a mobile app that quantifies exercise with suspension devices. Theoretical aspects of development.
ABSTRACT
After carrying out a bibliographic review of the different ways of estimating the load during suspension training, this study describes the theoretical foundations of the development of a mobile phone application (Kinematic lab susp) that allows estimating the load mobilized when training with devices in suspension (type TRX ®).
Methods:
systems of equations are proposed whose terms depend on the angulation of the device with respect to the vertical (angle α), the relationship between the height of grip and the height of the center of mass, and the weight of the subject that are recorded by means of a photograph.
Results:
after taking a photograph and incorporating the height of the subject, the application allows measuring the angle α, providing values of applied force (in N) and mobilized load in relation to the percentage of body mass applying the calculations described in our equations. The study also provides the estimated value of the load mobilized during a push on the floor (68% of the subject's body mass) and the equation for the calculation of the mobilized load when the suspension device is fixed to the feet.
Conclusions:
it is possible to estimate by means of equations the load mobilized in each repetition during the training by suspenesion devices. Kinemtaic lab susp is the first mobile app that allows this calculation to be made from the taking of a photograph.
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