Muscle: Contraction of heart muscle sections

In nlme: Linear and Nonlinear Mixed Effects Models

Contraction of heart muscle sections

Description

The Muscle data frame has 60 rows and 3 columns.

Format

This data frame contains the following columns:

Strip

an ordered factor indicating the strip of muscle being measured.

conc

a numeric vector giving the concentration of CaCl2

length

a numeric vector giving the shortening of the heart muscle strip.

Details

Baumann and Waldvogel (1963) describe data on the shortening of heart muscle strips dipped in a \mbox{CaCl}{}_2 solution. The muscle strips are taken from the left auricle of a rat's heart.

Source

Baumann, F. and Waldvogel, F. (1963), La restitution pastsystolique de la contraction de l'oreillette gauche du rat. Effets de divers ions et de l'acetylcholine, Helvetica Physiologica Acta, 21.

nlme documentation built on Nov. 27, 2023, 5:09 p.m.