HOME >> BIOLOGY >> NEWS
Scientific explanation for success of klapskate

As part of a project funded by the NWOs Netherlands Technology Foundation (STW), researchers at Amsterdam Vrije Universiteit (VU) have demonstrated why the so-called klapskate produces better speedskating performance. The klapskate (The Dutch word klap which means to slap is accepted as a universal prefix: German: Klappschlittschuh; Japanese: klapskato) is constructed in such a way that the shoe part can hinge up away from the blade to free the heel.

It turns out that the superiority of the klapskate is not so much because it allows the skater to extend his ankle joint at the end of the push-off phase but because of the location of the pivot point around which the foot rotates. The klapskate was developed by researchers and instrument makers at the VU in 1985 and was used for the first time in competitive speed skating by the junior selection of the Dutch province of South Holland during the 1996/1997 racing season. Since then it has taken the international speedskating world by storm.

The Amsterdam researchers invited ten top speedskaters to take part in experiments wearing standard speedskates and klapskates. It turned out that there was a 12% increase in the external power generated by skaters when they wore klapskates, allowing them to go 5% faster. As far as friction with the ice was concerned, there was hardly any difference between standard skates and klapskates. Although the front point of a standard (unhinged) speedskate scratches across the ice at the end of the push-off phase, this does not in fact lead to any appreciable loss of power. The superiority of the klapskate, which prevents the tip of the base from scratching the ice, cannot therefore be due to a decrease in friction between the skate and the ice.

Analysis of experimental measurements showed that the increase in power delivered using klapskates is to be found in the location of the pivot point around which the foot rotates, namely the hinge under the ball of the foot. With standa
'"/>

Contact: Michel Philippens
news@nwo.nl
31-70-344-0784
Netherlands Organization for Scientific Research
7-May-2001


Page: 1 2

Related biology news :

1. 2nd media alert First Scientific Conference on Childhood Leukaemia
2. First International Scientific Conference on Childhood Leukaemia
3. Scientific publications: Time for change
4. Dr. Walter Reich, Ph.D., receives prestigious AAAS 2003 Scientific Freedom and Responsibility Award
5. Press briefings at The Gerontological Society of Americas 56th Annual Scientific Meeting
6. Scientific study of twins shows forgiveness has genetic component
7. Scientific equipment including the first European student experiment reaches the ISS
8. Emorys CancerQuest wins top Web award from Scientific American
9. Scientific innovations, social issues and biobusiness at Bio Tech Helsinki 03
10. Scientific balancing act dominates AAAS top ten list of science policy stories for 2002
11. Acorda Therapeutics receives L.W. Freeman Award for Scientific Research

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/2/2018)... (PRWEB) , ... October 02, 2018 , ... ... the cancer research laboratory, ACEA Biosciences, The Cell Analysis Company , is ... designed specifically for immuno-oncology applications. Experimental design and data analysis for immune oncology ...
(Date:10/1/2018)... ... October 01, 2018 , ... Paragon Biosciences CEO Jeff Aronin was recently recognized ... for his work bringing life-altering drugs to patients in need. Jeff’s vision has led Paragon ... by the R&D teams now at Paragon and its portfolio companies. , From ...
(Date:10/1/2018)... (PRWEB) , ... October 01, ... ... post-translational modifications (PTMs) presents a unique challenge to proteomic studies. Often, PTMs ... each protein. Although label-free data-independent acquisitions (DIA, or SWATH®Acquisition) have been extensively ...
Breaking Biology News(10 mins):
(Date:10/11/2018)... (PRWEB) , ... October 11, 2018 , ... ... short-run label printing and software solutions, in collaboration with HP, the global leader ... for Avery UltraDuty GHS Chemical Labels on all HP PageWide Printers. , The ...
(Date:10/5/2018)... ... October 04, 2018 , ... Shell’s ... with a grant to purchase a high-tech machine that turns plastic into prosthesis. ... Washington State. The organization then processes the usable plastic and turns it into ...
(Date:10/2/2018)... ... October 02, 2018 , ... ... biopharmaceutical R&D, today announced a new out-of-the-box integration of the Genedata ... international pharmaceutical and laboratory equipment supplier. This enables the automatic import of ...
(Date:10/2/2018)... ... October 02, 2018 , ... The Alliance for ... have initiated validation of standards and testing of procedures for voluntary accreditation of ... Kennedy, ACRES VP for Quality Management Systems and Chief Quality Officer, is underway ...
Breaking Biology Technology:
Cached News: