Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link


Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People
Search
            ×
                        Mining
                        Mining
                            NIOSH
                            All CDC
                    Submit
                For a full list of topics:A-Z Index
                Advanced Search
            Advanced Search


The National Institute for Occupational Safety and Health (NIOSH)





Mining Publication: Forces and Moments on the Knee During Kneeling and Squatting
Keywords: Knee pads Kneeling Knees Miners Squatting
Original creation date: August 2011
Authors: JP Pollard, WL Porter, MS Redfern
Peer Reviewed Journal Article - August 2011
Download PDF Document (0.77 MB)
NIOSHTIC2 Number: 20039466
J Appl Biomech 2011 Aug; 27(3):233-241
Euler angle decomposition and inverse dynamics were used to determine the knee angles and net forces and moments applied to the tibia during kneeling and squatting with and without kneepads for 10 subjects in four postures: squatting (Squat), kneeling on the right knee (One Knee), bilateral kneeling near full flexion (Near Full) and bilateral kneeling near 90° flexion (Near 90). Kneepads affected the knee flexion (p = .002), medial forces (p = .035), and internal rotation moments (p = .006). Squat created loading conditions that had higher varus (p < .001) and resultant moments (p = .027) than kneeling. One Knee resulted in the highest force magnitudes and net moments (p < .001) of the kneeling postures. Thigh-calf and heel-gluteus contact forces decreased the flexion moment on average by 48% during Squat and Near Full.
Image of publication Forces and Moments on the Knee During Kneeling and SquattingPeer Reviewed Journal Article - August 2011
Download PDF Document (0.77 MB)
NIOSHTIC2 Number: 20039466
J Appl Biomech 2011 Aug; 27(3):233-241
See Also
Demands on the Knee During Kneeling and Squatting Activities Common to Low-seam Mining
Development and Evaluation of Prototype Kneepads for the Low-Seam Mining Industry
Electromyography of the Thigh Muscles during Lifting Tasks in Kneeling and Squatting Postures
Evaluation of Muscle Activity, Forces, Stresses, and Moments at the Knee During Kneeling and Squatting Tasks
Keeping Knees Healthy in Restricted Work Spaces: Applications in Low-Seam Mining
Pressure Distribution on the Anatomic Landmarks of the Knee and the Effect of Kneepads
Pressures Applied to Anatomical Landmarks of the Knee While in Kneeling Postures
Task-Specific Postures in Low-Seam Underground Coal Mining
Thigh-Calf and Heel-Gluteus Contact Forces in High Flexion: Experimental Results
Working in Unusual or Restricted Postures
Page last reviewed: September 8, 2015
Page last updated: September 8, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
Facebook
        Twitter
        LinkedIn
        Syndicate Mining
        Site BrowserSafety and Health TopicsData & StatisticsMethodologyMine DisastersMSHA Data FilesMine & Mineworker ChartsTools & PublicationsTools You Can UsePublicationsNews & ArticlesResearch ProgramNORA Mining CouncilStrategic PlanMining Program, 2019-2023Miner Health Program, 2020-2030ProjectsContractsFunding OpportunitiesMining LinksAbout UsContact NIOSH MiningEmploymentFacilitiesHistoryVisitor Information NIOSH Homepage
 NIOSH A-Z
Workplace Safety & Health Topics
Publications and Products
Programs


About CDC
					Contact Us
					800-232-4636
 Facebook Twitter Instagram LinkedIn Youtube Pinterest Snapchat
 CONTACT CDC
				Contact Us
							Call 800-232-4636
							Email Us
			ABOUT CDC
				About CDC
							Jobs
							Funding
			POLICIES
				Accessibility
							External Links
							Privacy
							Policies
							No Fear Act
							FOIA
							OIG
							Nondiscrimination
							Vulnerability Disclosure Policy
			CONNECT WITH US
				Facebook
								Twitter
								Instagram
								LinkedIn
							Youtube
								Pinterest
								Snapchat
								Email
			LANGUAGES
				Español
							繁體中文
							Tiếng Việt
							한국어
							Tagalog
							Русский
							العربية
							Kreyòl Ayisyen
							Français
							Polski
							Português
							Italiano
							Deutsch
							日本語
							فارسی
							English


U.S. Department of Health & Human Services
			Accessibility
			External Links
			Privacy
			Policies
			No Fear Act
			FOIA
			Nondiscrimination
			OIG
			Vulnerability Disclosure Policy
			USA.gov


Exit Notification / Disclaimer Policy Close
 Links with this icon  indicate that you are leaving the CDC website. The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
				Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
				You will be subject to the destination website's privacy policy when you follow the link.
				CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. Website Disclaimers
 Cancel Continue