Data from a Progressive Resistance Randomized Trial.

datasets

Datasets and utility  functions enhancing functionality of nlme package. Datasets, functions and scripts are described in book titled 'Linear Mixed-Effects Models:
A Step-by-Step Approach' by Galecki and Burzykowski (2013). Package is under development.

Andrzej Galecki

nlmeU

Datasets and Utility Functions Enhancing Functionality of 'nlme'
Package

prt function

The <code>prt</code> data frame has 2471 rows and 9 columns. It contains
 data for n = 63 subjects. Each subject underwent muscle biopsy before and
 after intervention. Data are stored in a long format with each record
 corresponding to one muscle fiber. There are two types of muscle fibers: Type
 1 and Type 2. Dependent variables: specific force and isometric force are
 measured pre- and post intervention.<dl>
 <dt>id</dt>
<dd>a factor with 63 levels <code>5</code>, <code>10</code>, <code>15</code>, <code>20</code>, <code>25</code>, ..., <code>520</code> (subject id)</dd> <dt>prt.f</dt>
<dd>a factor with 2 levels <code>High</code>, <code>Low</code>, i.e. training (intervention) intensity</dd> <dt>age.f</dt>
<dd>a factor with 2 levels <code>Young</code>, <code>Old</code> (stratifying variable)</dd> <dt>sex.f</dt>
<dd>a factor with 2 levels <code>Female</code>, <code>Male</code> (stratifying variable)</dd> <dt>bmi</dt>
<dd>a numeric vector with values of BMI at baseline ranging from 18.36 to 32.29</dd> <dt>iso.fo</dt>
<dd>a numeric vector with values of isometric force ranging from 0.16 to 2.565</dd> <dt>spec.fo</dt>
<dd>a numeric vector with values of specific force ranging from 80.5 to 290</dd> <dt>occ.f</dt>
<dd>a factor with 2 levels <code>Pre</code>, <code>Pos</code>, i.e. pre- and post-intervention.</dd> <dt>fiber.f</dt>
<dd>a factor with 2 levels <code>Type 1</code>, <code>Type 2</code>, i.e. Type 1 and Type 2 muscle fiber.</dd></dl>

Format

prt Data (2471 x 9) — prt

The <code>prt</code> data frame has 2471 rows and 9 columns. It contains
 data for n = 63 subjects. Each subject underwent muscle biopsy before and
 after intervention. Data are stored in a long format with each record
 corresponding to one muscle fiber. There are two types of muscle fibers: Type
 1 and Type 2. Dependent variables: specific force and isometric force are
 measured pre- and post intervention.<dl>
 <dt>id</dt>
<dd>a factor with 63 levels <code>5</code>, <code>10</code>, <code>15</code>, <code>20</code>, <code>25</code>, ..., <code>520</code> (subject id)</dd>

 <dt>prt.f</dt>
<dd>a factor with 2 levels <code>High</code>, <code>Low</code>, i.e. training (intervention) intensity</dd>

 <dt>age.f</dt>
<dd>a factor with 2 levels <code>Young</code>, <code>Old</code> (stratifying variable)</dd>

 <dt>sex.f</dt>
<dd>a factor with 2 levels <code>Female</code>, <code>Male</code> (stratifying variable)</dd>

 <dt>bmi</dt>
<dd>a numeric vector with values of BMI at baseline ranging from 18.36 to 32.29</dd>

 <dt>iso.fo</dt>
<dd>a numeric vector with values of isometric force ranging from 0.16 to 2.565</dd>

 <dt>spec.fo</dt>
<dd>a numeric vector with values of specific force ranging from 80.5 to 290</dd>

 <dt>occ.f</dt>
<dd>a factor with 2 levels <code>Pre</code>, <code>Pos</code>, i.e. pre- and post-intervention.</dd>

 <dt>fiber.f</dt>
<dd>a factor with 2 levels <code>Type 1</code>, <code>Type 2</code>, i.e. Type 1 and Type 2 muscle fiber.</dd>

</dl>

prt: prt Data (2471 x 9)

Description

Arguments

Format

Details

See Also

Examples