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Center of mass of human's body segments

Adolphe M., Clerval J., Kirchof Z., Lacombe-Delpech R., Zagrodny B.

Mechanics and Mechanical Engineering

2017

Vol. 21, nr 3

485--497

In biomechanics, determination of the body’s center of mass has always been an important part of many biomechanical studies. However, it is always a challenge to find it and often obtained results are only estimations, guesses. Indeed, to find someone’s body center of mass isn’t as easy as finding center of mass of simple rigid objects with uniform density, where it usually could be found at the centroid. The human body is different according to the gender, the age, the ethnicity, the physical shape, body fat distribution, etc. As it is composed of bones and muscles, results may differ drastically depending on which muscles are tense or on the body positioning. Nowadays, as a new era of biomechanics is approaching with a superior kind of prosthesis or exoskeletons that calls upon an “augmented humanity”, or even with gait modelling. It is important to find an experimental method that gives precise positioning of such an important data as the center of gravity of body segments, widely available to scientists that would need to go further in their researches, without having to use sophisticated equipment or time-consuming methods.