x
Data_Frame <- data.frame ( Training = c("Strength", "Stamina", "Other"), Pulse = c(100, 150, 120), Duration = c(60, 30, 45))Data_Frame[1]Data_Frame[["Training"]]Data_Frame$TrainingTraining 1 Strength 2 Stamina 3 Other [1] Strength Stamina Other Levels: Other Stamina Strength [1] Strength Stamina Other Levels: Other Stamina Strength