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Effect of temperature on the contractile properties and muscle power of triceps surae in humans
Abstract
In five spontaneously breathing kittens (12-13 days old), anesthetized with pentobarbital sodium, we measured the passive and active elastances and resistances of the respiratory system and the decay of inspiratory muscle pressure (PmusI) during expiration. When normalized for body weight (BW), passive resistance (Rrs . BW) was smaller in kittens than in adult cats, whereas passive elastance (Ers . BW) did not differ significantly. As a result, passive time constant (tau rs = Rrs/Ers) was shorter in kittens (mean +/- SE: 0.073 +/- 0.011 s) than in cats (0.121 +/- 0.008 s). This, associated with a faster decay in PmusI in kittens, results in 2-3 times higher flows per kilogram body weight during spontaneous tidal expirations in kittens than in cats. As in the adult cats, the average values of active elastance and resistance were higher than the passive, the average percentage increase amounting to 59 and 49%, respectively. The greater active impedance reflects force-length and force-velocity properties of inspiratory muscles. Its price is higher work of breathing; its advantage is greater intrinsic load compensation.
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Citations
Cited by
Bishop, D. (2003) · Sports Medicine · doi:10.2165/00007256-200333070-00002 · Cited by 753
Bishop, D. (2003) · Sports Medicine · doi:10.2165/00007256-200333060-00005 · Cited by 715
Neuromuscular fatigue after maximal stretch-shortening cycle exercise
Strojnik, V., & Komi, P. V. (1998) · Journal of Applied Physiology · doi:10.1152/jappl.1998.84.1.344 · Cited by 417
Mohr, M., Krustrup, P., Nybo, L., Nielsen, J. J., & Bangsbo, J. (2004) · Scandinavian Journal of Medicine & Science in Sports · doi:10.1111/j.1600-0838.2004.00349.x · Cited by 385
Effect of muscle temperature on leg extension force and short-term power output in humans
Sargeant, A. J. (1987) · European Journal of Applied Physiology and Occupational Physiology · doi:10.1007/bf00424812 · Cited by 370
Metadata
- Authors
- Davies, C. T., & Young, K.
- Venue
- Journal of Applied Physiology
- Publisher
- American Physiological Society
- Published
- 1983-07-01
- Volume
- 55
- Issue
- 1
- Pages
- 191-195
- ISSN
- 0161-7567 (ISSN-L)
- 8750-7587
- 1522-1601
- OpenAlex
- W1755346912
- Cited by
- 196
- References
- 0
- FWCI
- 1.53
- Type
- journal article
- Language
- en
- Open access
- closed
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- Davies, C. T., & Young, K. (1983). Effect of temperature on the contractile properties and muscle power of triceps surae in humans. Journal of Applied Physiology. https://doi.org/10.1152/jappl.1983.55.1.191
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