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How Ab Exercises Can Harm Your Pelvic Floor

author image Rick Rockwell
Rick Rockwell is a self-employed personal trainer and experienced freelance writer. His articles have been published throughout the Internet. He has more than eight years of experience as a certified personal trainer, group fitness instructor and lifestyle coach. His company, Rockwell Fitness, is dedicated to educating and empowering others to live healthy lifestyles.

The pelvic floor is a group of muscles under the pelvis that separate the perineal region from the pelvic cavity above it. The pelvic floor supports the bladder, the uterus in women and the intestines, and holds a major role in urinary and fecal continence. Although abdominal exercises are beneficial, there are some instances in which they may cause harm to the pelvic floor.

Imbalanced Muscles

Many people focus on gaining that "six-pack" ab look and as a result, concentrate their ab work on rectus abdominis exercises and perhaps the obliques. This concentration on only one or two of the abdominal muscles ignores inner obliques as well as the transverse abdominis, which results in abdominal imbalance. When the rectus abdominis is always held tightly or contracted constantly, an increased pressure is placed on the pelvic floor muscles, which may cause injury or dysfunction.

Increased Pressure

Traditional sit-ups and crunches cause pressure to build in the abdominal cavity and push on the pelvic floor. This may result in prolapsed bladder or uterus and urinary urgency. Men and women with weak pelvic floor muscles, women who have had recent pelvic surgery, women who are pregnant or have recently given birth, menopausal women, and those who are overweight are more at risk of suffering from pelvic floor injuries during abdominal exercise.

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Damage to the pelvic floor may result in pain with ejaculation, pain with vaginal penetration, urinary and fecal incontinence, lower back pain, pelvic pain, prolapsed bladder or prolapsed uterus in females. Pelvic floor dysfunction may also cause constipation, poor urine stream, an frequent urination.


If you are at risk for pelvic floor injury or suffer from weak pelvic floor muscles, avoid all exercises that place extreme stress on the upper abs. Avoid traditional sit-ups and crunches, bicycle crunches where both legs are raised at the same time, the twisting crunch, yoga or Pilates moves that involve raising the head off the floor at the same time as the legs, and gym machines that focus on the abdominals as an isolated movement. Exercises which are best for the pelvic floor muscles are those that keep your legs and head on the floor, or only one leg raised at one time, and lower abdominal exercises.

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