Navigation Links
Hips take walking in stride; ankles put best foot forward in run
Date:5/24/2011

In a first-of-its-kind study comparing human walking and running motions and whether the hips, knees or ankles are the most important power sources for these motions researchers at North Carolina State University show that the hips generate more of the power when people walk, but the ankles generate more of the power when humans run. Knees provide approximately one-fifth or less of walking or running power.

The research could help inform the best ways of building assistive or prosthetic devices for humans, or constructing next-generation robotics, say NC State biomedical engineers Drs. Dominic Farris and Gregory Sawicki. The co-authors of a study on the mechanics of walking and running in the journal Interface, a Royal Society scientific journal, Sawicki and Farris are part of NC State's Human PoWeR (Physiology of Wearable Robotics) Lab.

A long history of previous studies have focused on the biomechanics of human locomotion from a whole-body or individual limbs perspective. But this study is the first to zoom in on the mechanical power generated by specific lower-limb joints in a single comprehensive study of walking and running across a range of speeds, Sawicki says.

The study shows that, overall, hips generate more power when people walk. That is, until humans get to the point at which they're speed walking walking so fast that it feels more comfortable to run at 2 meters per second. Hips generate 44 percent of the power when people walk at a rate of 2 meters per second, with ankles contributing 39 percent of the power.

When people start running at this 2-meter-per-second rate, the ankles really kick in, providing 47 percent of the power compared to 32 percent for the hips. Ankles continue to provide the most power of the three lower limb joints as running speeds increase, although the hips begin closing the distance at faster speeds.

"There seems to be a tradeoff in power gener
'/>"/>

Contact: Mick Kulikowski
mick_kulikowski@ncsu.edu
919-515-8387
North Carolina State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. New equation calculates cost of walking for first time
2. Notre Dame researcher helps discover walking properties of bacteria
3. Advances made in walking, running robots
4. Human use heel first gait because it is efficient for walking
5. Are high speed elephants running or walking?
6. Ladder-walking locusts show big brains arent always best
7. Bizarre walking bat has ancient heritage
8. ONR, Marine Corps show alternative energy use at forward operating bases can save dollars, lives
9. Stroke research takes 2 steps forward
10. $1.6 million to take forward breakthrough research in heart disease
11. Growing drought-tolerant crops inching forward
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/25/2014)... Research and Markets  has announced the ... report to their offering. Biometrics ... the basis of their physical or behavioral patterns. It ... such as fingerprints, face recognition, DNA, palm print, hand ... keystroke patterns and speech pattern/voice recognition. ...
(Date:10/22/2014)... -- Leading identity analyst firm Acuity Market Intelligence forecasts that ... will have a chip-based National eID card, including near-complete ... Asia , with its vast population, is ... 60% of all National eID cards issued between 2014 ... National eID Industry Report: 2014 Edition" — ...
(Date:10/18/2014)... October 2014 Psychological stress and stress-related psychiatric disorders ... diseases, but the molecular mechanisms underlying this ... contribute to the development of targeted preventive ... these devastating diseases. This work is presented ... in Berlin., Now an international group of ...
Breaking Biology News(10 mins):Biometrics Market in Europe 2014-2018: Key Vendors are 3M Cogent, Cognitec, NEC and Safran 2Biometrics Market in Europe 2014-2018: Key Vendors are 3M Cogent, Cognitec, NEC and Safran 3Half the World's Population Will Have Chip-Based National Electronic Identity (eID) Cards by 2018 2Researchers find why depression and aging linked to increased disease risk 2
... Although increasing evidence indicates that low-frequency repetitive ... for neural regulation, has antiepileptic effects, the ... team from the Affiliated Hospital of North ... of low-frequency repetitive transcranial magnetic simulation on ...
... head injuries or persistent seizures into a medically induced ... professional constantly monitor the patient,s brain activity and manually ... anesthesia. Now a computer-controlled system developed by Massachusetts ... making it more precise and efficient and opening the ...
... world become even drier, water will not be the only resource ... be affected, and their imbalance could affect the lives of one-fifth ... in Arizona, who may be in for a dustier future. ... Nature that details how soil changes may occur and discusses ...
Cached Biology News:Automated system promises precise control of medically induced coma 2Automated system promises precise control of medically induced coma 3Plant production could decline as climate change affects soil nutrients 2
(Date:10/22/2014)... Columbia, Md. (PRWEB) October 21, 2014 ... package, an LC/MS/MS data tool for the pain management ... efficiency of data processing and review by allowing users ... importance to clinicians. , QuantAnalytics allows analysts to ... orders. This expedites data processing by eliminating the need ...
(Date:10/22/2014)... Diego, CA (PRWEB) October 22, 2014 ... balances from Sartorius, A & D Weighing, Rice ... Sartorius CPA Semi-Micro Balance . The Sartorius CPA ... for an affordable high-quality, precise, and user-friendly laboratory ... manufacturing of laboratory equipment, their laboratory balances are ...
(Date:10/22/2014)... According to new market research report "Cloud ... Deployment & Support), by Service Model (SaaS, PaaS, ... (Hybrid & Community)) - Global Forecast to 2019", ... Professional Services Market into various sub-segments with an ... identifies the drivers and restraints for this market ...
(Date:10/22/2014)... NEW YORK , Oct. 22, 2014 ... Diabetes Federation, approximately 400 million people worldwide are living ... 552 million people by 2030.  The global market for ... In 2012 approximately 330,000 people worldwide died from pancreatic ... of death due to cancer in the ...
Breaking Biology Technology:Shimadzu Releases QuantAnalytics Open Access LCMS Software Package for Clinical Applications 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5Nuvilex Brief Analyst Report: Thinking Outside the Box by BrokerBank Securities, Inc. 2
... Researchers at the Wyss Institute for Biologically Inspired Engineering ... a method for inducing magnetic sensitivity in an organism ... potentially be used to magnetize a variety of different ... research findings appear in today,s issue of PLoS ...
... LONDON, Feb. 28, 2012  Thomson Reuters announced the ... new capability that speeds access to critical life sciences ... life sciences platform, Thomson Reuters Cortellis. ... uses sophisticated application programming interfaces (APIs) to enhance ...
... Feb. 28, 2012 ViroPharma Incorporated (Nasdaq: VPHM ... and year ended December 31, 2011. In 2011, ... net product sales, including $251 million in net sales of ... sales of Vancocin® (Vancomycin Hydrochloride Capsules, USP); Attained non-GAAP ...
Cached Biology Technology:New 'magnetic yeast' marks step toward harnessing Nature's magnetic capabilities 2New 'magnetic yeast' marks step toward harnessing Nature's magnetic capabilities 3Thomson Reuters Cortellis Drives Drug Discovery and Development With Powerful New Web Services 2ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 2ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 3ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 4ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 5ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 6ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 7ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 8ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 9ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 10ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 11ViroPharma Incorporated Reports Fourth Quarter and Full Year 2011 Financial Results 12
... a concentrated formulation of a rinsing buffer ... technology, as well as for manual immunostaining. ... Brigati M.D., Department of Pathology, University of ... recommended for all the rinsing steps performed ...
... MALDI O-TOF creates a new category for ... platform that has been licensed to the ... Manitoba. , As the first single MALDI-TOF ... collisional cooling, the prOTOF 2000 represents a ...
... miVac DNA is an ideal small concentrator ... concentrator capable of removing water and organic ... including tubes, microplates, vials and round bottom ... for the busy lab. ,The built-in special ...
... The H2OBIT™ is a fully licensed, high throughput, ... processing of up to 24 microplates. This equates ... plates. A robotic arm rapidly transfers ... resulting in temperature ramping times that are considerably ...
Biology Products: