ArticleThe Journal of experimental biology2013
Lion (Panthera leo) and caracal (Caracal caracal) type IIx single muscle fibre force and power exceed that of trained humans.
Article in The Journal of experimental biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Does sex matter in the cheetah? Insights into the skeletal muscle of the fastest land animal.The Journal of experimental biology · 2024Article
- Preservation of shortening velocity and power output in single muscle fibres from patients with idiopathic inflammatory myopathies.Journal of muscle research and cell motility · 2023Article
- Conserving wildlife in a changing world: Understanding capture myopathy-a malignant outcome of stress during capture and translocation.Conservation physiology · 2019Review
- Baboon (Papio ursinus) single fibre contractile properties are similar to that of trained humans.Journal of muscle research and cell motility · 2018Article
- Article
- Force per cross-sectional area from molecules to muscles: a general property of biological motors.Royal Society open science · 2016Article
- Skeletal muscle signature of a champion sprint runner.Journal of applied physiology (Bethesda, Md. : 1985) · 2015Article
- Article
- Insights into the skeletal muscle characteristics of three southern African antelope species.Biology open · 2014Article
- Frequency dependence of power and its implications for contractile function of muscle fibers from the digital flexors of horses.Physiological reports · 2014Article
- Power output of skinned skeletal muscle fibres from the cheetah (Acinonyx jubatus).The Journal of experimental biology · 2013Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study investigated for the first time maximum force production, shortening velocity (Vmax) and power output in permeabilised single muscle fibres at 12°C from lion, Panthera leo (Linnaeus 1758), and caracal, Caracal caracal (Schreber 1776), and compared the values with those from human cyclists. Additionally, the use and validation of previously frozen tissue for contractile experiments is reported. Only type IIx muscle fibres were identified in the caracal sample, whereas type IIx and only two type I fibres were found in the lion sample. Only pure type I and IIa, and hybrid type IIax fibres were identified in the human samples - there were no pure type IIx fibres. Nevertheless, compared with all the human fibre types, the lion and caracal fibres were smaller (P<0.01) in cross-sectional area (human: 6194±230 μm(2), lion: 3008±151 μm(2), caracal: 2583±221 μm(2)). On average, the felid type IIx fibres produced significantly greater force (191-211 kN m(-2)) and ~3 times more power (29.0-30.3 kN m(-2) fibre lengths s(-1)) than the human IIax fibres (100-150 kN m(-2), 4-11 kN m(-2) fibre lengths s(-1)). Vmax values of the lion type IIx fibres were also higher than those of human type IIax fibres. The findings suggest that the same fibre type may differ substantially between species and potential explanations are discussed.
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