Measures of total body mass (in grams) recorded on different days (pre- and post-training measures included, if applicable): NMR day, VO\(_2\)max testing day, and day of sacrifice (terminal).
BODY_MASSESAn object of class data.frame with 282 rows and 12 columns:
character; randomly generated 8-digit identifier used in linkage to phenotypic data. All samples from the same animal have the same PID.
character; unique ID used for each rat at the Iowa PASS.
factor; the age of the rat at the beginning of the training protocol. Levels "6M" (Adult) and "18M" (Aged).
factor; the sex of the rat with levels "Female" and "Male".
factor; exercise training group. Either "SED" (sedentary) or the number of weeks of training ("1W", "2W", "4W", "8W").
numeric; body mass (g) recorded upon arrival to the facility.
numeric; body mass (g) following the familiarization period.
numeric; body mass (g) recorded on the same day as NMR body composition measures (pre-training).
numeric; body mass (g) recorded on the same day as NMR body composition measures (post-training).
numeric; body mass (g) recorded on the same day as the VO\(_2\)max test (pre-training).
numeric; body mass (g) recorded on the same day as the VO\(_2\)max test (post-training).
numeric; body mass (g) recorded on the day of sacrifice.
head(BODY_MASSES)
#> pid iowa_id age sex group arrival_body_mass famil_body_mass
#> 1 10043527 06F8T1 6M Female SED 180.2 181.2
#> 2 10043799 06F8T3 6M Female SED 179.4 179.2
#> 3 10043950 06F8T4 6M Female SED 176.6 174.4
#> 4 10044094 06F8T5 6M Female SED 180.1 181.2
#> 5 10044337 06F8T8 6M Female SED 183.6 185.2
#> 6 10044418 06F8T9 6M Female SED 177.1 178.3
#> nmr_pre_body_mass nmr_post_body_mass vo2_pre_body_mass vo2_post_body_mass
#> 1 181.2 199 178.3 199.2
#> 2 179.0 203 182.8 203.0
#> 3 174.4 202 178.2 202.3
#> 4 181.2 190 182.0 190.4
#> 5 185.2 205 182.4 204.6
#> 6 178.3 191 174.5 190.8
#> term_body_mass
#> 1 196.2
#> 2 196.2
#> 3 195.0
#> 4 190.0
#> 5 199.1
#> 6 186.4