The Effect of strengthening rhomboid muscles for the postural correction of protracted shoulders / Juan Miguel Reyes, Cherry Dianne Abergas, Carmille Louise Barruga, Marc Julius Bambico, Miguel Angelo Chui, Mutya Dimayacyac, Princess Joy Hementera, Jourdain Emmanuel Javier, Jusel Ann Mariz Lacerna, Lawrence Justice Remigio and Alan Patrick Sardalla.

Includes appendices and bibliographical references.

Abstract: The purpose of this study is to discover if strengthening of the rhomboids muscle can pose a significant and long-term beneficial effect on postural correction of protracted shoulders. This study utilized an experimental study. Sampling convenience was used from which subjects were taken. A total of 14 subjects out of 75 subjects qualified the criteria. Subjects were evaluated using Posture Co, every week for 3 weeks. Strengthening program utilized PREs, which were done thrice a week for 3 weeks with one day interval. Initial weight was 70% of 1 RM for 10 reps x 3 sets and was progressed 5 lbs per week in 3 weeks. Results of ANOVA indicate a F ration of 6.96 and a p-value of 0.003 resulted in the rejection of the null hypothesis. Strengthened by a post-hoc analysis represented the amount of deviation noted. Week 1 displays a higher value from the AP index compared to week 2 and 3 which values from the AP index was significantly decreased. A baseline range indicates a mean value of change at 1.1816 cm with a + of 1.526 as reference value. The moderately significant statistical difference between group means as determined by one-way ANOVA (F=6.96, p= 0.003) thereby rejecting the null hypothesis. Post hoc analysis presents the amount of change that occurred after administration of strengthening program, thereby correcting protracted shoulders at the end of 3rd week. Strengthening a single group of muscle will have a significant and long-term beneficial effect on protracted shoulders.

Thesis - School of Physical Therapy