Effects of age and obesity on trunk kinetics and kinematics during dominant side one-handed carrying
| Autor: | Richard F. Sesek, Jordan Coker, Gerard A. Davis, Mark C. Schall, Sean Gallagher, Mohamed Badawy, Michael Zabala |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Aging Biomedical Engineering Biophysics Kinematics Body weight Vertebral segment Weight-Bearing Young Adult Physical medicine and rehabilitation medicine Humans Orthopedics and Sports Medicine Dominant side Obesity business.industry Rehabilitation Torso Middle Aged medicine.disease Hand Trunk Trunk kinematics Biomechanical Phenomena Kinetics business Material handling |
| Zdroj: | Journal of biomechanics. 94 |
| ISSN: | 1873-2380 |
| Popis: | The proportions of older and obese people are increasing in both the general and working populations worldwide. Older and obese individuals are more susceptible to work-related musculoskeletal disorders (MSDs) in comparison with healthy, younger individuals. Manual material handling (MMH) is associated with the development of work-related MSDs. Although previous research has suggested that one-handed carrying is a particularly undesirable method of MMH, the effects of one-handed carrying on trunk kinetics and kinematics among older and/or obese people have not been adequately studied. The objective of this study was to examine the effects of age and obesity on trunk angles and moments during dominant side one-handed carrying of various load magnitudes. Twenty (20) participants divided into four groups with respect to age (young and older) and obesity (obese and non-obese) carried different loads (No-load [0 kg], Light [5.67 kg], and Heavy [10.21 kg]) in their dominant hand for approximately 6 m. Three-dimensional (3D) trunk angles and moments approximately about the L4/L5 vertebral segment were calculated using Visual3D. The findings indicated that while carrying a load in the dominant hand plays an important role in changing trunk kinematics and kinetics, the results were not dependent on age and/or obesity category. Absolute moments were greatest among participants in the obese groups; however, these moments were mitigated when normalized to body weight and height (%BW * Ht). Age did not exacerbate the effects of load magnitude on trunk kinetics and kinematics. |
| Databáze: | OpenAIRE |
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