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Table 2.

Regression against body mass of red muscle organelle volume density and surface density

Equation Y=aWbCoefficient of determination (R2)Standard error of the slope (b)P-value
Vv(myo,f) 0.007W–4.561×10–6 0.307 2.589×10–6 0.6810 
Vv(nuc,f) 0.489W2.272×10–6 0.026 5.299×10–5 0.1215 
Vv(mitimf,f) 0.156W–1.340×10–5 0.053 2.145×10–5 0.5520 
Vv(mitss,f) 0.196W–4.043×10–5 0.281 2.444×10–5 0.1421 
Vv(mit,f) 0.356W–6.069×10–5 0.255 3.918×10–5 0.1653 
Vv(lipimf,f) 0.003W4.107×10–6 0.131 3.996×10–6 0.3383 
Vv(lipss,f) 0.003W1.213×10–6 0.024 2.915×10–6 0.6897 
Vv(lip,f) 0.009W5.301×10–7 0.001 6.217×10–6 0.9344 
Vv(ecs,m) 0.095W–2.923×10–5 0.561 9.775×10–5 0.0202 
Vv(sarimf,f) 0.003W5.245×10–5 0.819 9.314×10–6 0.0008 
Vv(sarss,f) 0.039W1.641×10–5 0.112 1.746×10–5 0.3787 
Vv(sar,f) 0.040W6.892×10–5 0.614 2.066×10–5 0.0125 
Sv(mitimf,f) 0.663W–6.256×10–5 0.087 7.659×10–5 0.4409 
Sv(mitss,f) 0.756W–9.843×10–5 0.144 9.070×10–5 0.3138 
Sv(mit,f) 1.419W–1.610x×10–4 0.138 1.519×10–4 0.3243 
Sv(lipimf,f) 0.029W1.810×10–5 0.002 1.635×10–5 0.9150 
Sv(lipss,f) 0.031W–1.125×10–5 0.094 1.321×10–5 0.4226 
Sv(lip,f) 0.060W–1.306×10–5 0.025 2.890×10–5 0.6651 
Equation Y=aWbCoefficient of determination (R2)Standard error of the slope (b)P-value
Vv(myo,f) 0.007W–4.561×10–6 0.307 2.589×10–6 0.6810 
Vv(nuc,f) 0.489W2.272×10–6 0.026 5.299×10–5 0.1215 
Vv(mitimf,f) 0.156W–1.340×10–5 0.053 2.145×10–5 0.5520 
Vv(mitss,f) 0.196W–4.043×10–5 0.281 2.444×10–5 0.1421 
Vv(mit,f) 0.356W–6.069×10–5 0.255 3.918×10–5 0.1653 
Vv(lipimf,f) 0.003W4.107×10–6 0.131 3.996×10–6 0.3383 
Vv(lipss,f) 0.003W1.213×10–6 0.024 2.915×10–6 0.6897 
Vv(lip,f) 0.009W5.301×10–7 0.001 6.217×10–6 0.9344 
Vv(ecs,m) 0.095W–2.923×10–5 0.561 9.775×10–5 0.0202 
Vv(sarimf,f) 0.003W5.245×10–5 0.819 9.314×10–6 0.0008 
Vv(sarss,f) 0.039W1.641×10–5 0.112 1.746×10–5 0.3787 
Vv(sar,f) 0.040W6.892×10–5 0.614 2.066×10–5 0.0125 
Sv(mitimf,f) 0.663W–6.256×10–5 0.087 7.659×10–5 0.4409 
Sv(mitss,f) 0.756W–9.843×10–5 0.144 9.070×10–5 0.3138 
Sv(mit,f) 1.419W–1.610x×10–4 0.138 1.519×10–4 0.3243 
Sv(lipimf,f) 0.029W1.810×10–5 0.002 1.635×10–5 0.9150 
Sv(lipss,f) 0.031W–1.125×10–5 0.094 1.321×10–5 0.4226 
Sv(lip,f) 0.060W–1.306×10–5 0.025 2.890×10–5 0.6651 

Vv, organelle volume density; Sv,surface density; myo, myofibrils; f, fibre; nuc, nucleus; mit, mitochondria;imf, intermyofibrillar; ss, subsarcolemmal; lip, lipid; ecs, extracellular space; m, muscle; sar, sarcoplasm

Y is the parameter examined, a is a normalisation constant (the value of the y-axis intercept), W is the body mass (g) and b is the scaling exponent (slope of the regression line)

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