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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

The ACE gene and muscle performance

Article Abstract:

The presence of the longer ACE allele, which has an insertion of 287 base pairs, gives an improved mechanical efficiency in trained muscle, according to research into training-related changes in the mechanical efficiency of human skeletal muscle. The effect of the II genotype in improving the mechanical efficiency of trained muscle may be linked to a rise in slow-twitch rather than fast-twitch muscle fibres, which are more efficient in slow contraction. These findings have implications in other areas, including congestive heart failure.

Author: Williams, A.G., Rayson, M.P., Jubb, M., World, M., Woods, D.R., Hayward, M., Martin, J., Humphries, S.E., Montgomery, H.E.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000

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Human gene for physical performance

Article Abstract:

New research shows that human physical performance is enhanced by a polymorphism in the gene that encodes angiotensin-converting enzyme. The research finds that the I (insertion) allele of the gene is linked with improved endurance among high-altitude mountaineers. It is suggested that the improved performance may result from variable increases in substrate delivery because of increased muscle capillary density and higher cardiac output.

Author: Rayson, M., Jubb, M., World, M., Hayward, M., Humphries, S.E., Montgomery, H.E., Bell, J.D., Marshall, R., Hemingway, H., Myerson, S., Clarkson, P., Dollery, C., Holliman, D.E., Thomas, E.L., Brynes, A.E., Saeed, N., Barnard, M., Prasad, K., Talmud, P.J.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
Genetic aspects, Physical fitness, Observations, Human genetics, Cardiovascular research

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Exercise and reduced muscle mass in starlings

Article Abstract:

Issues are presented concerning the control of muscle development in starlings so as to maintain a balance between the energy cost of flying and a good standard of flight performance.

Author: Swaddle, John P., Biewener, Andrew A.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
Starlings, Animal flight, Flight

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Subjects list: Research, Physiological aspects, Muscles, Angiotensin converting enzyme
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