Gait Changes During Pregnancy
Pregnancy significantly alters the way a woman walks. We have all witnessed at one point the tell tale gait of an expecting mom. So what exactly happens to the body as it nears full term? As the body adapts to a growing baby, increases in body weight, hormonal changes, and shifts in posture lead to noticeable biomechanical adjustments in gait. The gait pattern isn’t simply because it’s uncomfortable. These changes are not random; in fact, they are protective strategies that help maintain balance and stability as the body’s center of gravity moves forward and upward.
One of the most recognizable changes is the development of a wider, more stable walking pattern aka the “waddle” (said lovingly). Pregnant women often walk with a slightly broader step width (feet apart) and spend more time with both feet on the ground during each stride. This increased double-support time enhances stability and reduces the risk of losing balance as the body’s mass distribution shifts during pregnancy.
At the same time, the musculoskeletal system works harder to support the changing body. Muscles such as the hip abductors, hip extensors, and ankle plantar flexors (why the side and back of your butt hurt and charlie horses are night time enemies) become more active during walking to stabilize the pelvis and propel the body forward. These muscles compensate for ligament laxity and joint instability caused by pregnancy hormones, which loosen connective tissues throughout the body.
Pregnancy can also affect the feet themselves. Hormonal influences and fluid retention may loosen the ligaments in the foot, causing the arches to flatten and the feet to lengthen or widen slightly. This change can alter weight distribution during walking, increasing the load on the lateral and rear portions of the foot and sometimes contributing to lower-limb discomfort.
Pelvic mechanics also play a key role. During normal walking, the pelvis moves rhythmically upward and downward from side to side to allow the legs to swing forward efficiently. In pregnancy, pelvic instability—often associated with pelvic girdle pain—can exaggerate these movements. As a result, some women develop a more side-to-side walking pattern commonly described as a “waddling gait.” In cases where pain is present, the body may shorten the stance phase on the affected side, producing an antalgic gait to reduce weight bearing.
