Off-campus Pacific University users: To download campus access theses and dissertations, please log into our proxy server with your PUNet ID and password.

Non-Pacific University users: Please talk to your librarian about requesting this thesis or dissertation through interlibrary loan.

Theses or dissertations that have a specific embargo period indicated below will not be available to anyone until the date indicated.

Date of Award

5-21-1989

Degree Type

Thesis (On-Campus Access Only)

Degree Name

Master of Physical Therapy (MPT)

First Advisor

Alta Hansen, PhD, PT

Second Advisor

Pat Tangeman, MEd, PT

Abstract

This study compared the bent-legged sit-up (BLS) to a sit-up movement pattern performed on an Eagle isotonic machine (EM). Thirty-three healthy individuals (17 men, 16 women, from 20 to 36 years of age) participated in this study. Electromyography (EMG) readings were measured bilaterally from the upper and lower portions of the rectus abdominis. Each subject performed both sit-up techniques for 3 sets x 5 repetitions. The EM utilized resistance plates 1, 3, 4 or 5 for three sets respectively. One factorial analysis of variance with repeated measures (ANOVA-RM) and a paired two tailed t-test were used to analyze the data. Results from this study showed significant differences that the BLS elicited a higher EMG activity as compared to the EM during the first two sets in all phases from the upper and lower rectus abdominis (p=.0001) using the paired two-tailed t-test. The ANOVA-RM also found the BLS elicited a significant difference between the two sets in all phases except during the phase of set two from the lower bilateral recti when compared to the EM. No critical value was obtained when comparing the third set by the two-tailed t-test and ANOVA-RM.

Comments

The digital version of this project is currently unavailable to off-campus users not affiliated with Pacific University; however, it may be accessed on campus or through interlibrary loan (for eligible borrowers) from Pacific University Library. Pacific University Library is a free lender.

Share

COinS