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:9/18/2014)... MADISON, Wis. No matter how many times ... as social, communicating creatures. , But by ... single-celled organisms radically alter their behavior to suit ... many of them are present, and act accordingly. ... the millions, it may change from innocuous to ...
(Date:9/18/2014)... the first smartphone app that automatically reveals students, ... other words, your smartphone knows your state of ... how that affects you. , The StudentLife app, ... to their academic performance, also may be used ... monitor mental health, trigger intervention and improve productivity ...
(Date:9/18/2014)... disciplines will be celebrated tonight at the third annual ... the health of premature infants and in paving the ... whose work was supported by the National Science Foundation, ... Energy Commission, will be honored at a ceremony at ... group of Members of Congress will be on hand ...
Breaking Biology News(10 mins):Researchers study vital 'on/off switches' that control when bacteria turn deadly 2Researchers study vital 'on/off switches' that control when bacteria turn deadly 3New Dartmouth smartphone app reveals users' mental health, performance, behavior 2New Dartmouth smartphone app reveals users' mental health, performance, behavior 3New Dartmouth smartphone app reveals users' mental health, performance, behavior 43rd annual Golden Goose award ceremony honors 8 researchers; Unusual work had big results 2
... dioxide often means danger - too many animals breathing ... exhaling nearby. Mice have a way of detecting carbon ... a special set of olfactory neurons is involved, a ... in atmospheric carbon dioxide may affect animal behavior. The ...
... Delaying having kids to help raise the offspring of ... to reproduce, but many African starlings have adopted this ... savanna habitats, according to a new study by University ... in the Aug. 21 issue of the journal Current ...
... menu to youngsters, despite concerns over obesity. Children burn more ... research in the online open access publication, Nutrition Journal, evidence ... healthy and balanced diet. A US team led ... to measure whole body fat oxidation in 10 children (aged ...
Cached Biology News:Mice use specialized neurons to detect carbon dioxide in the air 2Savanna habitat drives birds, and perhaps others, to cooperative breeding 2Savanna habitat drives birds, and perhaps others, to cooperative breeding 3Savanna habitat drives birds, and perhaps others, to cooperative breeding 4Fat still on the children's menu 2
(Date:9/19/2014)... 2014 Barnhardt Manufacturing Company ... its Organic Cotton . The USDA Certified Biobased ... biobased ingredients meets or exceeds levels set by USDA. ... whole or in significant part of agricultural, forestry, or ... Organic cotton to be immediately identified as a USDA ...
(Date:9/18/2014)... 18, 2014 Bipartisan passage this week ... designed to stimulate development and commercialization of new technologies ... by leaders of SPIE, the international society for ... Manufacturing and Innovation (RAMI) Act, now moves to the ... said they are optimistic that it will win passage ...
(Date:9/18/2014)... , Sept. 18, 2014  Health Enhancement Products, Inc. (OTCQB: ... early-stage algae bioactive compounds and metabolic processes, is pleased to ... board of directors. Ms. Nola E. Masterson , a ... joined the board effective September 17, 2014. ... to join our board," states Andrew Dahl , President ...
(Date:9/18/2014)... 2014 Research and Markets ... N-acetylcysteine Industry Report 2014" report to their ... Report 2014 is a professional and in-depth study ... industry. The report provides a basic ... and industry chain structure. The N-acetylcysteine market analysis ...
Breaking Biology Technology:Barnhardt Manufacturing Company Earns USDA Certified Biobased Product Certification and Label for Organic Cotton 2House passage of high-tech manufacturing bill is move toward stronger economy, say SPIE leaders 2House passage of high-tech manufacturing bill is move toward stronger economy, say SPIE leaders 3Health Enhancement Announces New Board Member In Advance Of Annual Shareholder Meeting 2Global N-acetylcysteine Industry Report 2014 2
... , , , , Multiporator / Electroporator 2510 , , , ... Transformation Protocol , Protocol No. 4308 915.502 12/2001 , ... , , , , ... , Cell type , Bacteria, gram ...
... Plasmid , Mini Kit , ... James Griffith and Kim Vollmer , James Griffith, ... Instruments, Biosytems Application Lab, Westbury, , NY , , ... , Cosmids are commonly used vectors in the lab, providing the ...
... , , , , Other important parameters for optimizing electroporation., , , , ... , , Pulse length , ... field pulses , Adjustment , of ... , Influence , of temperature , ...
Cached Biology Technology:Agrobacterium tumefaciens 2Isolation of Cosmids using Eppendorf's Perfectprep Plasmid , Mini Kit 2Isolation of Cosmids using Eppendorf's Perfectprep Plasmid , Mini Kit 3Isolation of Cosmids using Eppendorf's Perfectprep Plasmid , Mini Kit 4Isolation of Cosmids using Eppendorf's Perfectprep Plasmid , Mini Kit 5
SphingoStripsTM contain fifteen different biologically active, nitrocellulose-immobilized lipids at 100 pmol per spot, which can be assayed for protein binding and specificity using a simple blot ove...
Mouse monoclonal antibody raised against a partial recombinant KRT4. NCBI Entrez Gene ID = KRT4...
... ,High Quality, Functionally-Validated, Ion Channel Cell Lines ... having a critical role in nerve and ... function in pain, CNS and the heart. ... investigated in therapeutic areas, such as neuropathic ...
... Ion Channel Cell Lines ,High Quality, Functionally-Validated, ... are well known for having a critical ... consequently have a key function in pain, ... ion channels have been investigated in therapeutic ...
Biology Products: