Abstract

QUESADA SALAZAR, Natalia. Musculoskeletal changes and biomechanic adaptations during the three trimesters of pregnancy: a sistematic review. Pensar en Movimiento [online]. 2021, vol.19, n.1, pp.161-187. ISSN 1659-4436.  http://dx.doi.org/10.15517/pensarmov.v19i1.44961.

Quesada Salazar, N. (2021). Musculoskeletal changes and biomechanic adaptations during the three trimesters of pregnancy: a sistematic review. PENSAR EN MOVIMIENTO: Revista de Ciencias del Ejercicio y la Salud, 19(1), 1-27. Pregnancy is a progressive process involving hormonal, mechanical, physiological, and emotional changes in women that stimulates the musculoskeletal system to adapt constantly. These changes are usually identified through posture and the biomechanics of day-to-day movements. This study consists of a systematic review of the main alterations and adaptations during pregnancy, including articles from 2008 to 2018 that involved healthy pregnant women without previous musculoskeletal affections, with a single fetus and normal BMI, and any methods of study excluding case studies. Thirteen studies were identified which indicate evaluation of participants ages from 20 to 35 years during their three trimesters of pregnancy, as well as different study objectives. Posture in a pregnant woman shows an increase in the lumbar lordosis, thoracic curvature, and anterior tilt of the pelvis. The task of sitting and rising from a chair requires more control to complete the movement as well as increased execution time. Oscillation movement and ground reaction forces of the center of pressure of the body increase during standing posture, which results in a greater distance between the feet as a strategy to control the balance. Finally, gait biomechanics adapt to a slower speed, smaller step length, and less time with feet off the ground, but a wider step and support base. During pregnancy, women develop anatomic and mechanic adaptations in response to the progressive changes they experience.

Keywords : pregnancy; systematic review; musculoskeletal system; biomechanics.

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