The purpose of this study is to examine the validity and reliability of a test designed to measure the pelvic-tilt angle, active posterior and anterior pelvic-tilt angles and ranges of motion, and the total pelvic-tilt range of motion (ROM) in standing position.
The pelvic tilt is the angle between the horizontal plan and a line drawn from the anterior superior iliac spine (ASIS) to the posterior superior iliac spine (PSIS) in quiet standing. It is determined by the muscular and ligamentous forces that act between the pelvis and adjacent segments. A forward rotation of the pelvis, referred to as anterior pelvic tilt, is accompanied by an increase in lumbar lordosis and is believed to be associated with a number of common musculoskeletal conditions, including low back pain. In addition, anterior pelvic tilt has been associated with a loss of core stability, and therefore the degree of pelvic tilt has been used to assess routinely therapeutic procedures that either directly or indirectly affects the standing position of the pelvic tilt in the sagittal plane by Physical therapists.
The effects of the therapeutic procedure outcome measurements in physiotherapy are rarely quantified. Physical therapists need to consider clinical tests designed to provide objective and reliable pelvic-tilt data because such tests would permit documenting change in the pelvic tilt after a specific physical therapy regimen. The effects of therapeutic procedures could then be quantified and changes in the procedures could be made accordingly. Numerous techniques for measuring trunk motions in the sagittal plane have been reported in many researches. The techniques include using radiography, photography, spondylometry, flexible rules that conform to trunk curves, tape measures to record the change in centimeters between skin marks or bony landmarks and variations of goniometry.
Table of Contents
- Abstract
- Introduction
- Method
- Subjects
- Testing
- Data analysis
- Results
- Discussion
Objectives and Key Themes
The main objective of this study was to assess the validity and reliability of a trigonometric method for measuring pelvic tilt and range of motion in a standing position. This involved evaluating the accuracy and consistency of measurements obtained using this method for various pelvic tilt angles and ranges of motion.
- Validity and reliability of trigonometric method for measuring pelvic tilt
- Comparison of trigonometric method with other techniques for measuring pelvic tilt
- Influence of factors like body type on measurement reliability
- Clinical implications and limitations of the trigonometric method
- Assessment of pelvic tilt angles (standing, anterior, posterior) and range of motion
Chapter Summaries
Introduction: This chapter introduces the concept of pelvic tilt, its measurement challenges, and the need for a reliable and valid method. It discusses existing methods, highlighting their limitations (expense, invasiveness, limited availability). The chapter establishes the rationale for using a trigonometric method, emphasizing its potential as a cost-effective, safe, and accessible alternative. It positions the study within the existing literature on pelvic tilt measurement, highlighting the gap this research aims to fill.
Method: This section details the methodology employed in the study. It describes the subject selection process, using a simple random sampling method to choose 49 students (25 male, 24 female). The chapter outlines the testing procedure, including the use of an interviewer-administered questionnaire, BMI calculation, and the specific steps involved in measuring pelvic tilt angles (standing, anterior, and posterior). The description of the trigonometric calculations used to derive angles from the raw data is included, along with the explanation of how the ranges of motion were calculated. The procedures aim to ensure accuracy and reliability through repeated measurements and careful palpation of bony landmarks.
Results: This chapter presents the findings of the study. It summarizes the demographic data of the participants (age, weight, height, BMI), followed by a presentation of the validity and reliability coefficients obtained using Pearson's r. These coefficients are reported for the standing pelvic-tilt angle, anterior pelvic-tilt angle, posterior pelvic-tilt angle, and the total range of motion, for both the right and left sides of the body. The results directly address the study's objective of assessing the validity and reliability of the trigonometric method.
Discussion: This chapter analyzes and interprets the results presented previously. It begins by restating the study's purpose and affirms the validity and reliability of the trigonometric method for measuring pelvic tilt and range of motion. The discussion compares the findings with results reported in existing literature, highlighting the advantages of this method—inexpensive, safe, and simple. It addresses potential sources of measurement error and how these were mitigated during the study. Finally, it suggests areas for further research, specifically exploring the influence of body type on the method's reliability.
Keywords
Trigonometric method, Pelvic motion, Pelvic tilt angle, Validity, Reliability, Range of motion, Anterior pelvic tilt, Posterior pelvic tilt, Standing pelvic tilt, Biomechanics, Musculoskeletal.
Frequently Asked Questions: A Comprehensive Language Preview
What is the main objective of this study?
The primary goal is to evaluate the validity and reliability of a trigonometric method for measuring pelvic tilt and range of motion while standing. This involves assessing the accuracy and consistency of measurements across various pelvic tilt angles and motion ranges.
What are the key themes explored in this study?
Key themes include the validity and reliability of the trigonometric method, comparisons with other pelvic tilt measurement techniques, the impact of factors like body type on measurement reliability, the clinical implications and limitations of the trigonometric method, and the assessment of pelvic tilt angles (standing, anterior, posterior) and range of motion.
What methods were used in this study?
The study employed a trigonometric method to measure pelvic tilt. A simple random sample of 49 students (25 male, 24 female) participated. Data collection involved an interviewer-administered questionnaire, BMI calculation, and meticulous measurement of pelvic tilt angles (standing, anterior, and posterior) using the trigonometric method. Repeated measurements and careful palpation of bony landmarks were used to ensure accuracy and reliability. Pearson's r was used to calculate validity and reliability coefficients.
What are the key findings of the study?
The results section presents demographic data (age, weight, height, BMI) and validity and reliability coefficients (Pearson's r) for standing, anterior, and posterior pelvic tilt angles, and total range of motion for both sides of the body. These coefficients directly address the study's objective of assessing the trigonometric method's validity and reliability.
What are the conclusions and implications of the study?
The discussion section interprets the results, confirming the validity and reliability of the trigonometric method. It compares the findings with existing literature, highlighting the method's cost-effectiveness, safety, and simplicity. Potential measurement errors and mitigation strategies are discussed. Areas for future research, particularly exploring the influence of body type on reliability, are suggested.
What are the key chapters covered in the preview?
The preview includes an abstract, introduction, methods (subjects, testing, data analysis), results, and discussion sections. Each section provides a summary of its contents.
What keywords are associated with this study?
Keywords include: Trigonometric method, Pelvic motion, Pelvic tilt angle, Validity, Reliability, Range of motion, Anterior pelvic tilt, Posterior pelvic tilt, Standing pelvic tilt, Biomechanics, Musculoskeletal.
What is the overall purpose of this language preview?
This preview provides a comprehensive overview of the study, including the title, table of contents, objectives and key themes, chapter summaries, and keywords, offering a structured and professional analysis of its content.
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- Thiruvarangan Suwaminathan (Autor:in), T.D.M.S.B Dassanayake (Autor:in), D.B.D.L Samaranayake (Autor:in), 2017, Measuring Pelvic Tilt and Pelvic Range of Motion in Standing Posture. Validity and Reliability of Trigonometric Methods, München, GRIN Verlag, https://www.grin.com/document/373205
