رابطه ميزان قدرت عضلات شكمي و پشتي با تعداد زايمان

The Relationship between Abdominal and Paravertebral Muscles Strength and Frequency of Delivery

Introduction and Objectives: Since the strength and the tolerance of the abdominal and paravertebral muscles playa great role in holding the body in its normal position and the preservation of the joint, this study was carried out to investigate the relationship between frequency of delivery and abdominal and back muscle strength, age, vveight and pam. Materials and Methods: This cross-sectional study was performed on a sample of 100 \vomen with or without low back pain (mean age ~ 41.51.12.5 Years) in rehabilitation department of Yasuj university. Abdominal and paravertehra muscle strength was measured based on the standard system of muscular strength grading. Using interview and measurement methods, variables such as frequency of delivery, age, weight. and height were registered in a questionnaire Results: In this study mean of delivery pregnancy was (5.3 ± 4). 33% of the subjects had more than 8 deliveries, 38~/o had 4 to 7 deliveries and 29% had 3 or fewer deliveries. The mean of abdominal muscle strength score was (3.3± 0.8). This figure was (2.5 ±0.5) for the subjects with S-13 deliveries, and (4.1 ±0.3) for those with 3 or fewer deliveries. The mean of paravertebral muscle strength was (4 ±.OA). This was (3.3 ± OA) for the subjects with 8 and 3 or fewer deliveries, respectively. The mean of height was (158.5 ±7.5cm) and their mean weight (69.5 ± 10.5 Kg). Conclusion: Abdominal and paravertebral muscles strength decreased with an increase 111 frequency of deliveries. The relationship between abdominal and paravertebral muscles strength with the number of deliveries v....as statistically significant (p