The aim of this study is to investigate which verbal instruction will lead to the most efficient contraction of pelvic floor muscles (PFM) in patients with urinary incontinence.

and to examine whether correct PFM contraction can be taught by transabdominal ultrasound, which is used as biofeedback.

Pelvic floor muscle contraction will be evaluated via transabdominal ultrasound.

A self-controlled clinical trial is planned for patients who receive physiotherapy for pelvic floor rehabilitation at one of the Meuhedet Institutes' physiotherapy clinics.

Each participant will be asked to contract the pelvic floor muscles using three different verbal instructions: (1) "contract your pelvic floor - all sphincters"; (2) "contract your anus"; (3) "contract your pelvic floor as if you're trying to stop urinating". Those who will not be able to contract will be taught by the ultrasound as biofeedback.

The assessment of pelvic floor contraction will be measured by measuring bladder displacement via abdominal ultrasound. A curved linear array transducer will be placed in the transverse plane immediately suprapubically over the lower abdomen angled at 15-30 degrees from the vertical. An on-screen caliper and measurement tool will be used to measure bladder displacement.

Inclusion Criteria:

• Diagnosis of urinary incontinence
• Understand the language and simple instruction
• Willing to participate in the study

Exclusion Criteria:

• Has been treated before for pelvic floor rehabilitation by a physiotherapist
• Received medication or surgery for the problem

the result of the study will be analyzed. a paper will be submitted to an international journal with study description including methods, examination protocol results.