After part of the rectum is removed for rectal cancer, the body's ability to store and control stool changes. Even once a temporary stoma is reversed, many people find that for a while they cannot clearly sense the urge to go, or struggle to hold stool in. This cluster of changes is often called Low Anterior Resection Syndrome (LARS). It frequently improves over time, but the pace of recovery varies a great deal from person to person.
To help, clinicians often recommend pelvic floor muscle exercises — the squeeze-and-release movements around the anus commonly known as Kegel exercises. The goal is to rebuild the strength and endurance of the muscles that hold stool back. At first it can be hard to even tell which muscle to use; imagining the feeling of drawing the anus gently inward, as if holding back gas or urine, can help. It is usually suggested to keep the belly, buttocks, and thighs relaxed, avoid holding your breath, and practice both short, quick squeezes and longer holds.
If exercising alone is difficult, or for someone who is elderly and frail, biofeedback or pelvic floor training devices may be options. Biofeedback uses a screen or signal to show whether the muscle is contracting correctly, which is especially useful for finding the right muscle. However, home training devices vary widely in type and stimulation method, and their suitability depends on the surgical site, any history of radiation therapy, and whether there is bleeding or pain. For a thin, older person in particular, strong electrical stimulation or insertable devices may be uncomfortable. Before renting or buying anything, it is wise to discuss which approach is safe with the surgical team or a rehabilitation or colorectal nurse.
Adjusting diet and bowel habits alongside exercise also helps: get adequate fluid and fiber, eat smaller, regular amounts rather than large meals, and seek dietary or medication support if stool is very loose or frequent. Keep exercising within a pain-free range, but stop and seek care if you notice sudden bleeding, severe pain, fever, or skin breakdown or discharge around the anus.
This article is general information only; the right approach differs by individual. Any specific decision, including the use of exercise devices, should be made together with your own care team, and this does not replace medical consultation.