Which one of the following muscle groups are mainly involved in moving the arms when performing a press up?

Which one of the following muscle groups is found in the arms?

Match the words to their correct definitions.

1. Agonist = [[The muscle which is contracting during the movement]]

2. Antagonist = [[The muscle that is relaxing or lengthening during the movement]]

3. Fixator = [[Muscles that assist movement by supporting and stabilising the joint and the rest of the body]]

4. Antagonistic muscle action = [[During any movement, one muscle contracts and the other relaxes these are called antagonistic muscle action]]