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Effect of Prolonged Sitting on Lower-Limb Circumference Changes

Abstract

The study examines the effect of prolonged sitting on lower-limb circumference changes among young adults, with emphasis on variations in the size of selected lower-limb regions following an extended period of sitting. Prolonged sitting may influence venous return and the distribution of fluid within the lower extremities, potentially producing temporary changes in limb circumference. Understanding these changes may provide useful information on the functional anatomy of the lower limbs and the effects of sustained sedentary positioning on peripheral tissues. The study will assess lower-limb circumference before and after a standardized period of prolonged sitting among healthy young adults. Circumference measurements will be obtained at selected anatomical landmarks of the lower limbs, such as the calf and ankle regions, using a flexible standardized measuring tape. Baseline measurements will be taken before the sitting period, followed by measurements at predetermined intervals after prolonged sitting to document changes in circumference. The procedure will be conducted under similar environmental and resting conditions for all participants. A comparative descriptive research design will be adopted for the study. An appropriate sample of healthy young adults will be selected using a suitable sampling technique. Data obtained from the lower-limb circumference measurements will be analyzed using descriptive statistics such as frequency, percentage, mean, and standard deviation, while an appropriate paired or comparative inferential test will be applied to determine whether observed changes following prolonged sitting are statistically significant. The study is expected to reveal measurable changes in lower-limb circumference following prolonged sitting. Some participants may demonstrate a temporary increase in circumference, particularly around the distal regions of the lower limb, due to changes in fluid distribution and reduced movement during sustained sitting. The magnitude of the observed changes may vary among anatomical sites and participants depending on individual differences in lower-limb characteristics and response to prolonged sitting. The findings will be useful to anatomists, physiotherapists, occupational health professionals, physical educators, ergonomists, and other healthcare practitioners involved in the assessment of lower-limb function and sedentary-related changes. The study may provide useful information on temporary changes in lower-limb dimensions associated with prolonged sitting and contribute to practical understanding of peripheral circulation, tissue fluid distribution, and lower-limb functional anatomy. The study will conclude by documenting the observed effects of prolonged sitting on lower-limb circumference among the study population. It is recommended that standardized measurement procedures and consistent sitting conditions be used when assessing lower-limb circumference changes, while further studies involving different durations of sitting and larger or more diverse populations should be conducted to provide broader information on temporary lower-limb changes associated with sedentary positioning.

Keywords: Prolonged sitting, lower-limb circumference, lower-limb changes, sedentary behavior, lower extremities, calf circumference, ankle circumference, fluid distribution, peripheral circulation, venous return, tissue swelling, lower-limb anatomy, young adults, sitting posture, functional anatomy.