Navigation Links
Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

>

"One possible mechanism for increased efficiency is that (Armstrong) increased his percentage of type I muscle fibers, (indeed) we predict that he might have increased his percentage of type I muscle fibers from 60% to 80%," the report said. "Interestingly, this magnitude of increase…is remarkably similar to our predictions made in 1991 based on cross-sectional observations of competitive cyclists."

This change in muscle type may account for the apparent ease with which Armstrong seems to be pedaling, albeit at a high cycling cadence.

Whereas the lab tests were held constant at 85 revolutions per minute (rpm) for comparison purposes, Armstrong's "freely chosen cycling cadence during time trial races of 30- to 60-minute duration increased progressively during this y-year period from about 85-95 rpm to about 105-110 rpm. This increase in freely chosen rpm when cycling at high intensity is indeed consistent with increase in type I muscle fibers because cyclists with a higher percentage of type I fibers choose a higher pedaling cadence when exercising at high power outputs," the report said. "Although this may initially seem paradoxical, higher cycling cadence serves to both bring muscle fiber contraction velocity closer to that of maximum power and reduce the muscle and pedaling force required for each cycling stroke," it noted.

As body matures, it gets "smarter"

Coyle said increased muscle efficiency means that "for the same amount of cardiovascular and lung stress Armstrong is producing 8% more power, and yet producing less heat. These results have shown us how to improve already highly trained athletes by aiming at efficiency, which is a muscle phenomenon. But it's also nice to know," he added, "that as you get older that your body becomes wiser in how it does its job and less wasteful in energy usage."

Coyle added later: "There's no doubt that Armstrong started with a strong genetic makeup, but he maximized his abilitie
'"/>

Source:American Physiological Society


Page: 1 2 3 4 5 6

Related biology news :

1. Termites feed through good vibrations
2. Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine
3. Breakthrough Microarray-based Technology for the Study of Cancer
4. Leukemia Drug Breakthrough Study In New England Journal Of Medicine
5. BRCA1 causes ovarian cancer through indirect, biochemical route
6. Breakthrough method in nanoparticle synthesis paves the way for new pharmaceutical and biomedical applications
7. Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin
8. HIV-1 spread through six transmission lines in the UK
9. MUHC researchers make cancer target breakthrough
10. Breakthrough isolating embryo-quality stem cells from blood
11. Breakthrough System for Understanding Ocean Plant Life Announced
Post Your Comments:
(Date:6/15/2015)... June 15, 2015 A new report ... reveals the majority of US consumers using mobile banking applications ... such as fingerprint and voiceprint, instead of having to prove ... to Telstra,s " Mobile Identity   -   The Fusion ... with smartphones now the primary channel used by Gen X ...
(Date:6/11/2015)... June 11, 2015 Daon, a global ... that its IdentityX Mobile Authentication Platform v4.0 has ... Alliance is an industry consortium launched in 2013 ... simpler, stronger authentication.  In order to receive certification, ... rigorous series of tests that measure compliance and ...
(Date:6/9/2015)... 09, 2015 Research and Markets  ( ... "Gesture Recognition & Touchless Sensing Market by ... & Others), Product (Biometric & Sanitary Equipment) & ... report to their offering. The total ... to reach $ 23.55 Billion by 2020 at ...
Breaking Biology News(10 mins):One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 2One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 3One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 4Daon's IdentityX Mobile Authentication Platform One of First Products to be Certified by FIDO Alliance 2Global Gesture Recognition & Touchless Sensing (Technology, Application & Products) Market 2015-2020 2
... the breakdown of old bone by cells called ... cells called osteoblasts. This coordinated activity is essential ... leads to bone destruction in skeletal diseases such ... bone. A family of signaling enzymes known as ...
... ants and relatives comprise the megadiverse insect order ... group on Earth, far surpassing the number of ... orders of animals (beetles, butterflies, wasps, and true ... complete metamorphosis, i.e. having a dormant pupa, jointly ...
... known for their use in exfoliating skin to soft, radiant ... sustainability efforts on two fronts at the same time: energy ... bacteria to create a power-generating microbial fuel cell (MFC) and ... . Shungui Zhou and colleagues note that MFCs, ...
Cached Biology News:New target identified for preventing bone destruction in diseases such as arthritis and cancer 2Fossils clarify the origins of wasps and their kin: alderfly ancestors, snakefly cousins 2
(Date:7/1/2015)... InferMed , s ... will augment Elsevier ... olutions suite   Elsevier , a world-leading ... announced today the acquisition of  InferMed , a ... InferMed,s Arezzo technology supports clinicians in choosing the most ...
(Date:6/30/2015)... , July 1, 2015 R-Japan Co.,Ltd. obtained the ... Safety of Regenerative Medicine from the Ministry of Health, Labour ... 29, 2015. The fact that R- ... through the auditing from Pharmaceuticals and Medical Devices Agency (PMDA) ... allows it to provide stem cell manufacturing service to medical ...
(Date:6/30/2015)... June 30, 2015  NASA astronaut Kjell Lindgren , ... on his first mission to the International Space Station ... to 9 a.m. EDT Tuesday, July 7. Lindgren ... City, Russia . The interviews will be ... highlighting his mission training. To schedule an interview, ...
(Date:6/30/2015)... ... June 30, 2015 , ... ... does not sacrifice selectivity to achieve faster flow rates in comparison to nylon ... with significant open space to allow easy liquid flow while trapping particulates as ...
Breaking Biology Technology:Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 2Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 3Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 4R-Japan Obtained Autologous Stem Cell Manufacturing License from the Ministry of Health, Labour and Welfare 2NASA Astronaut Preps for First Space Station Mission, Available for Media Interviews 2New Nanofiber Membrane Provides Fast, Efficient Filtration 2
... , ... Multi-talented IEEE1394b Firewire lab workhorse delivers high resolution and sensitivity , ... Surrey, British Columbia ... easy-to-use digital cameras for life science and industrial applications, has announced the release ...
... , SEATTLE, Aug. 21 Cell Therapeutics, Inc. ... its previously announced sale of $30 million of shares of its ... common stock in a registered offering to a single institutional investor. ... of Series 2 Preferred Stock and to receive the 18,853,103 shares ...
... , , CAPE CANAVERAL, Fla., ... Sunday, Aug. 23, to discuss new science experiments using the International Space ... Center in Florida and will be broadcast live on NASA Television. ... , Media are invited to e-mail questions in advance ...
Cached Biology Technology:QImaging Introduces EXi Aqua™ Microscopy Camera for Bio-Imaging 2QImaging Introduces EXi Aqua™ Microscopy Camera for Bio-Imaging 3Cell Therapeutics, Inc. Announces Closing of Registered Offering of $30 Million of Preferred Stock and Warrants 2NASA Sets Briefing on New Space Station Science Experiments 2
...
ANTI DIPHTH TOX A SU...
... Bullseye Red Taq DNA Polymerase is a ... high activity in primer extension and other ... red dye which provides easy and quick ... added and allows confirmation of complete mixing. ...
... Methylation-specific PCR (MSP) is a new ... gene methylation utilizing small amounts of ... initial bisulfite reaction to modify the ... specific primers designed to distinguish methylated ...
Biology Products: