The superficial transverse perineal muscle is a small, flat muscle located in the pelvic region of the body. It originates at the ischial tuberosity (sit bones) and the perineal body, and inserts into the base of the penis or clitoris. The superficial transverse perineal muscle is part of the pelvic floor muscles, which are responsible for supporting the pelvic organs and maintaining continence (control of urinary and fecal function).

The main function of the superficial transverse perineal muscle is to support the pelvic organs and maintain continence. This muscle helps to prevent the involuntary loss of urine and other bodily fluids, and provides support for the bladder, uterus, and rectum. The superficial transverse perineal muscle also helps to maintain sexual function, and assist in the contraction of the vagina during orgasm.

In sports, the superficial transverse perineal muscle may be used to maintain continence and support the pelvic organs during physical activity. This is especially important for activities that involve high impact or pressure on the pelvic region, such as running and jumping.

The superficial transverse perineal muscle is constantly working to maintain continence and support the pelvic organs. It is particularly active during activities that put pressure on the pelvic region, such as coughing, sneezing, and lifting heavy objects.

The superficial transverse perineal muscle is not under voluntary control, so it cannot be directly exercised. However, the pelvic floor muscles, which are responsible for supporting the pelvic organs and maintaining continence, can be strengthened through exercises such as pelvic floor contractions and pelvic floor lifts. These exercises can help to improve the function of the superficial transverse perineal muscle, and support the health of the pelvic region.