With your partner lying on a table with hands on shoulders and legs extended, place one of your hands under your partner's lower lumbar region. Place your other hand on your partner's abdomen. Ask your partner to press the low back into the table. Complete the following:
A.
Motion Performed
Agonist
Antagonist
Trunk flexion
B. If your partner is unable to press the low back into the table, which muscles may be too short to permit the movement to occur? ____________
C. If your partner is unable to press the low back into the table, which muscles may be too weak or long to perform the movement? ____________
10. In the standing position, slide your left hand down the side of your leg, thereby bringing your shoulder closer to your knee.
A. What motion did you perform?
B. Which muscle(s) performed the motion?
C. What type of contraction has the agonist performed?
_______ Eccentric _______ Concentric
12. In each of the activities, identify which muscles are the agonists. Starting in the supine position:
A. With the head in midline, ask your partner to flex the head and neck only. _______________________
B. With the head in midline, ask your partner to tuck the chin. ____________________________________
C. With the head turned to the left, ask you partner to lift the head off the table. ___________________________________________
12. In each of the activities, identify which muscles are the agonists. Starting in the supine position:
A. With the head in midline, ask your partner to flex the head and neck only. _______________________
B. With the head in midline, ask your partner to tuck the chin. ____________________________________
C. With the head turned to the left, ask you partner to lift the head off the table. ___________________________________________
(Lippert 179)
References
Lippert, Lynn S., Mary Alice Minor. Laboratory Manual for Clinical Kinesiology and Anatomy, 3rd Edition. F.A. Davis Company, 01/2011. VitalBook file.