Chad Harris
Metropolitan State University of Denver
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American Journal of Lifestyle Medicine | 2017
Trish Sevene; Joseph M. Berning; Chad Harris; Mike Climstein; Kent J. Adams; Mark DeBeliso
Background Many countries are experiencing an aging workforce with women workers making up a growing proportion. Workplaces often require employees to complete lifting tasks that require the ability of the hand to grasp an implement (coupling). The National Institute for Occupational Safety and Health (NIOSH) has developed an equation for manual lifting tasks hoping to minimize the potential for a workplace back-injury related to a lifting task. The NIOSH lifting equation relies upon stress variables including a coupling factor. However, little is known regarding grip strength as related to the NIOSH lifting equation coupling factor. The purpose of this study was to investigate differences in grip strength due to gender in older adults. Methods The participant’s (68–88 years) maximal grip (MG) strength measures were collected for each hand with a hand grip dynamometer (kg). MG scores were converted to Newtons (N), normalized to body mass, and allometrically scaled. Measures of MG were than compared between genders with an independent t-test. Results The hand grip measures of MG (kg) [male: 30.3 ± 5.6, female: 10.6 ± 3.3], MG (kg) / body mass (kg) [male: 0.35 ± 0.06, female: 0.16 ± 0.04], MG (N) / (body mass (kg))0.67 [male: 15.1 ± 2.5, female: 6.2 ± 1.7], and MG (N) / (body height (m))1.84 [male: 103.6 ± 18.6, female: 42.6 ± 10.6] were all significantly lower (p < 0.0001) for women than men. Regardless of how grip strength was reported, there is a strong difference in grip strength between genders in this sample. The NIOSH lifting equation does not account for varying grip strength due to aging and gender differences. Conclusions It is recommended that grip strength variability be accounted for in the coupling factor of the NIOSH lifting equation.
Archive | 2003
Chad Harris; Mark DeBeliso; K. Adams
Journal of exercise physiology | 2004
Mark DeBeliso; P O'Shea; Chad Harris; K. Adams; Michael Climstein
International Journal of Science and Engineering Investigations | 2015
Mark DeBeliso; Mikaela Boham; Chad Harris; Carol Carson; Joseph M. Berning; Trish Sevene; Kent J. Adams; Mike Climstein
International Journal of Science and Engineering Investigations | 2013
Mikaela Boham; Mark DeBeliso; Chad Harris; Ronald P. Pfeiffer; John W. McChesney; Joseph M. Berning
Turkish Journal of Kinesiology | 2018
Teag Whiting; Alan Bishop; Chad Harris; Joseph M. Berning; Kent J. Adams; Mark DeBeliso
International Journal of Science and Engineering | 2018
Joseph M. Berning; Carol Carson; Trish Sevene; Chad Harris; K. Adams; Mike Climstein; Mark DeBeliso
European Journal of Physical Education and Sport Science | 2018
Michael Cazayoux; Alan Bishop; James W. Navalta; Chad Harris; Kent J. Adams; Mark DeBeliso
Turkish Journal of Kinesiology | 2017
Drew Rykert; Chad Harris; Kent J. Adams; Mark DeBeliso
European Journal of Physical Education and Sport Science | 2017
J. Murray; Chad Harris; Kent J. Adams; J. Joseph Berning; Mark DeBeliso