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Sexual Dimorphism in Multifidus Muscle Dimensions Among Young Adults

Abstract

The study examines sexual dimorphism in multifidus muscle dimensions among young adults, with emphasis on differences in the measurable characteristics of the muscle between male and female individuals. The multifidus is a deep intrinsic muscle of the back that extends along the vertebral column and contributes to spinal extension, rotation, and segmental stabilization. Its anatomical dimensions are relevant to the functional assessment of the vertebral column and may provide useful information for understanding differences in spinal musculature among individuals. The study will determine the dimensions of the multifidus muscle among young adults and compare selected measurements between male and female participants. The specific objectives will include measuring selected dimensions of the multifidus muscle, determining the mean values of the measurements among the study participants, comparing the observed dimensions between males and females, and identifying any statistically significant differences in the selected measurements. A cross-sectional descriptive research design will be adopted for the study. An appropriate sample of male and female young adults will be selected using a suitable sampling technique. Multifidus muscle dimensions will be assessed using standardized anatomical or imaging-based measurement procedures, depending on the method available for the study. The collected data will be analyzed using descriptive statistics such as frequency, percentage, mean, and standard deviation, while appropriate independent-group inferential tests will be applied to determine whether significant differences exist between male and female participants. The study is expected to reveal differences in selected multifidus muscle dimensions between male and female young adults. Some measurements may show higher mean values in one group than the other, while other dimensions may demonstrate little or no statistically significant difference. The findings are expected to provide evidence of measurable variation in multifidus muscle dimensions between the sexes within the study population. The findings will be useful to anatomists, physiotherapists, orthopaedic surgeons, radiologists, sports medicine practitioners, and other healthcare professionals involved in the assessment and management of spinal and back-related conditions. Information on sex-related differences in multifidus muscle dimensions may support anatomical education, interpretation of spinal imaging, rehabilitation assessment, and understanding of variations in the musculature responsible for spinal stabilization. The study will conclude by documenting the selected dimensions of the multifidus muscle and determining the extent of sexual dimorphism within the study population. It is recommended that standardized measurement and imaging procedures be used when assessing multifidus muscle dimensions and that further studies involving larger and more diverse populations be conducted to establish broader reference values for the muscle across different age groups and populations.

Keywords: Multifidus muscle, sexual dimorphism, muscle dimensions, morphological variation, spinal musculature, intrinsic back muscles, vertebral column, spinal stabilization, back muscles, morphometry, anatomical variation, young adults, muscle measurement, clinical anatomy, sex-related differences.