TY - JOUR
T1 - Head and trunk segment moments of inertia estimation using angular momentum technique
T2 - Validity and sensitivity analysis
AU - Damavandi, Mohsen
AU - Stylianides, Georgios
AU - Farahpour, Nader
AU - Allard, Paul
N1 - Funding Information:
Manuscript received October 22, 2010; accepted December 6, 2010. Date of publication December 20, 2010; date of current version April 20, 2011. This work was supported in part by Natural Science and Engineering Council of Canada and in part by the Ministry of Sciences, Research, and Technology of Iran. Asterisk indicates corresponding author.
PY - 2011/5
Y1 - 2011/5
N2 - Classical models to estimate the head and trunk (HT) moments of inertia (I) are limited to populations from which the anthropometric measures were obtained. The purposes of this study were to determine if the angular momentum technique can be used to estimate subject-specific HTs I values and test its validity and sensitivity. Twenty-three adults who participated in this study were divided into three morphological groups according to their body mass index (BMI). Using the proposed technique, the HTs I values were estimated for the whole sample and compared to three well-known methods to test its validity. The sensitivity of the proposed method was verified while applied to individuals with different BMI (i.e., lean, normal, and obese). The angular momentum technique gave I values within the range of those of the three methods for the entire sample. Statistical differences were identified between the lean and obese groups in relative radii of gyration for the anteroposterior and mediolateral axes ( P < 0.05). Since the proposed technique makes no assumption on the mass distribution and segments geometry, it appeared to be more sensitive to body morphology changes in estimating the HTs I values in lean and obese subjects compared to the classical methods.
AB - Classical models to estimate the head and trunk (HT) moments of inertia (I) are limited to populations from which the anthropometric measures were obtained. The purposes of this study were to determine if the angular momentum technique can be used to estimate subject-specific HTs I values and test its validity and sensitivity. Twenty-three adults who participated in this study were divided into three morphological groups according to their body mass index (BMI). Using the proposed technique, the HTs I values were estimated for the whole sample and compared to three well-known methods to test its validity. The sensitivity of the proposed method was verified while applied to individuals with different BMI (i.e., lean, normal, and obese). The angular momentum technique gave I values within the range of those of the three methods for the entire sample. Statistical differences were identified between the lean and obese groups in relative radii of gyration for the anteroposterior and mediolateral axes ( P < 0.05). Since the proposed technique makes no assumption on the mass distribution and segments geometry, it appeared to be more sensitive to body morphology changes in estimating the HTs I values in lean and obese subjects compared to the classical methods.
KW - Angular momentum
KW - anthropometry
KW - body morphology
KW - head and trunk (HT)
KW - inverse pendulum model
KW - moment of inertia (I)
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U2 - 10.1109/TBME.2010.2100394
DO - 10.1109/TBME.2010.2100394
M3 - Article
C2 - 21177155
AN - SCOPUS:79955545602
SN - 0018-9294
VL - 58
SP - 1278
EP - 1285
JO - IEEE Transactions on Biomedical Engineering
JF - IEEE Transactions on Biomedical Engineering
IS - 5
M1 - 5672397
ER -