Navigation Links
The cost of being on your toes
Date:2/12/2010

reases agility in rapid turning maneuvers during aggressive encounters."

The study concludes: "Relative to other mammals, humans are economical walkers but not economical runners. Given the great distances hunter-gatherers travel, it is not surprising that humans retained a foot posture, inherited from our more arboreal [tree-dwelling] great ape ancestors, that facilitates economical walking."

Measuring the Costs of Different Modes of Walking and Running

Carrier conducted the study with Christopher Cunningham, a doctoral student in biology at the University of Utah; Nadja Schilling, a zoologist at Friedrich Schiller University of Jena, Germany; and Christoph Anders, a physician at University Hospital Jena. The study was funded by the National Science Foundation, Friedrich Schiller University of Jena and a German food industry insurance group interested in back pain.

The study involved 27 volunteers, mostly athletes in their 20s, 30s and 40s. Each subject walked or ran three different ways, with each step either heel-first, ball-of-foot first with the heel a bit elevated or toes first with the heel even more elevated.

In his lab, Carrier and colleagues measured oxygen consumption and thus energy use as 11 volunteers wore face masks while walking or running on a treadmill. They also walked on a "force plate" to measure forces exerted on the ground.

Part of the study was conducted at Anders' lab in Germany, where 16 people walked or ran on a treadmill as scientists monitored activity of muscles that help the ankles, knees, hips and back do work during walking and running.

Findings of the experiments included:

  • "You consume more energy when you walk on the balls of your feet or your toes than when you walk heels-first," Carrier says. Compared with heels-first walkers, those stepping first on the balls of their feet used 53 percent more energy, and those stepping toes-first expende
    '/>"/>

Contact: Lee Siegel
leesiegel@ucomm.utah.edu
801-581-8993
University of Utah
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. Geneticists coordinate action to fight against traffic in human beings
2. Being a standout has its benefits, study shows
3. DNA against traffic in human beings
4. Fear of being laughed at crosses cultural boundaries
5. Ben-Gurion University of the Negev technology being developed for use in Jordan desalination plant
6. Now butterflies are also being counted in China, Australia and Israel
7. Scientists capture the first image of memories being made
8. Cancer: The cost of being smarter than chimps?
9. DNA-Prokids: Genetic identification against traffic in human beings
10. The importance of being helpful -- Cooperative cichlids boost their own reproductive success
11. Promising new drug being evaluated as possible treatment option for fragile X syndrome
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The cost of being on your toes
(Date:7/30/2014)... The use of iodine-125 (125I) in cancer treatment ... dorsal root ganglia are critical for neural transmission ... Tengda Zhang and colleagues from Institute of Radiation ... that 125I could be implanted into rat dorsal ... pain. 125I seeds with different radioactivity (0, 14.8, ...
(Date:7/30/2014)... analysis of the roughly 3,000 pieces is still in ... the results will be of major significance. "Amazingly often, ... species in Fushun amber that we found in Baltic ... , The Baltic amber comes from the Baltic Sea ... rich in finds are, e.g., the coastal regions of ...
(Date:7/30/2014)... journal Scientific Reports , published by Nature ... that while global temperature is indeed increasing, so too ... each year,s average hottest and coldest temperatures will likely ... a wider range of potential high and low temperate ... even as overall temperatures rise, we may still continue ...
Breaking Biology News(10 mins):Chinese mosquitos on the Baltic Sea 2Big data confirms climate extremes are here to stay 2
... LONDON , April 27, 2010 Dominio Amigo S.A.S ... the .CO domain name launch. , , ... Julio Camacho , CEO, Dominio Amigo S.A.S , ... have consistently performed,at both ccTLD and gTLD launches, securing the very best Internet ...
... LONDON , April 27, 2010 ... backdrop. In,a video interview with online financial broadcaster http://www.cantos.com ,Chief Executive ... which,demonstrates the resilience of our business and the success of our enhanced,focus ... ...
... , April 27 The PMI Group, Inc. (NYSE: ... sell in concurrent underwritten public offerings an aggregate of 77,765,000 shares ... $6.15 per share and $261 million aggregate ... connection with the offerings, PMI has granted the underwriters 30-day options ...
Cached Biology News:Dominio Amigo Announce Domainmonster as .CO Technical Partner 2Dominio Amigo Announce Domainmonster as .CO Technical Partner 3Imperial Tobacco - 2010 Half Year Results Interviews 2The PMI Group, Inc. Announces Pricing of Common Stock and Convertible Senior Notes Offerings 2The PMI Group, Inc. Announces Pricing of Common Stock and Convertible Senior Notes Offerings 3The PMI Group, Inc. Announces Pricing of Common Stock and Convertible Senior Notes Offerings 4
(Date:7/30/2014)... San Diego, CA (PRWEB) July 30, 2014 ... second contract from the U.S. Environmental Protection Agency ... company’s expertise in developmental toxicity models, including tests ... on neuron formation and the formation of connections ... function. Inhibition of neurodifferentiation and synapse formation by ...
(Date:7/29/2014)... Dallas, Texas (PRWEB) July 30, 2014 ... in Private Equity and Venture Capital Funding” report ... factors shaping the private equity and venture capital ... that these are expected to have significant impact ... the US and globally. Furthermore, the report identifies ...
(Date:7/29/2014)... Can a particle be separated from its properties? On ... published the results of the first Cheshire Cat experiment, ... Chapman University in Orange, CA, and Vienna University of ... without a grin," thought Alice in Wonderland, "but a ... I ever saw in my life!" Alice,s surprise stems ...
(Date:7/29/2014)... generation biofuels are a viable solution to the dilemma of ... is very cheap, this is affecting the biofuels market in ... could be in comparison to natural gas. This, in ... for renewable energy developers to get the economics to work ... certain companies have shifted their focused within renewable energy. ...
Breaking Biology Technology:U.S. Environmental Protection Agency (EPA) Awards Vala Sciences a Second ToxCast Contract 2U.S. Environmental Protection Agency (EPA) Awards Vala Sciences a Second ToxCast Contract 3Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 2Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 3Strategic Trends of Biotech Investment Industry (Private Equity and Venture Capital Funding) in New Report Available at MarketOptimizer.org 4The quantum Cheshire cat: Scientists separate a particle from its properties 2The quantum Cheshire cat: Scientists separate a particle from its properties 3The quantum Cheshire cat: Scientists separate a particle from its properties 4Renewable Waste Intelligence: Could Renewable Chemicals Be the Future for the Renewable Energy Industry? 2
... Management to discuss positive corporate developments and ... call, SANTA CLARA, Calif., Oct. 14 ... cardiac diagnostic and services company, today,announced that ... discuss,recent corporate developments and provide an update ...
... release date, NATICK, Mass., Oct. 14 ... the following comments reinforcing,the strength of its balance ... and the Company,s stock price,volatility have had no ... performance of the Company. Strong cash flow generation,during ...
... China, Oct. 14 /Xinhua-PRNewswire/ -- WuXi PharmaTech,(Cayman) ... pharmaceutical, biotechnology and,medical device research and development ... United States, today announced preliminary selected,unaudited financial ... 30, 2008,and updated its guidance for the ...
Cached Biology Technology:NewCardio Management to Host Conference Call on October 21 2NewCardio Management to Host Conference Call on October 21 3Boston Scientific Provides Comments Reinforcing Strength of Its Balance Sheet 2Boston Scientific Provides Comments Reinforcing Strength of Its Balance Sheet 3WuXi PharmaTech Announces Preliminary Third Quarter 2008 Results and Updates 2008 Guidance 2WuXi PharmaTech Announces Preliminary Third Quarter 2008 Results and Updates 2008 Guidance 3WuXi PharmaTech Announces Preliminary Third Quarter 2008 Results and Updates 2008 Guidance 4WuXi PharmaTech Announces Preliminary Third Quarter 2008 Results and Updates 2008 Guidance 5WuXi PharmaTech Announces Preliminary Third Quarter 2008 Results and Updates 2008 Guidance 6WuXi PharmaTech Announces Preliminary Third Quarter 2008 Results and Updates 2008 Guidance 7WuXi PharmaTech Announces Preliminary Third Quarter 2008 Results and Updates 2008 Guidance 8
...
... Fully adjustable mixing angle, Variable speed, Digital ... a number of different sized tubes, Spillage ... cultures, keeping biological samples in suspension and ... be used in incubators up to 60C ...
... The DNA Engine Opticon 2 real-time PCR ... LEDs for fluorescence excitation (470-505 nm) and ... nm, 540-700 nm). The Opticon 2 system ... cycler, which includes a thermal gradient feature. ...
... Multicolor capability allows detection of SYBR ... channel, and a range of fluorophores in ... VIC, and TAMRA for a multitude ... discrimination. DNA Engine thermal cycler offers precision ...
Biology Products: