Inclusion Criteria:  65 or older, as older women will show a particular genitourinary profile compared with younger women, notably due to menopause. This age cut-off was used in other studies in UI; Ambulatory (able to walk, move about safely and autonomously without any mobility device); Describe a pattern of stress/mixed UI, confirmed using the Questionnaire for Incontinence Diagnosis (QUID); Have at least three urinary leakage per week, persisting for 3 months or more; Understand French or English instructions; Report no important cognitive deficit (determined with a Mini-Mental State Evaluation (MMSE) score of 24/30 or more); Have an internet access; and Able to give informed consent and complete a gynecological examination and fill 7-day bladder diaries and questionnaires.  Exclusion Criteria:  Present risk factors known to interfere with the effects of PFMT or with the PFM evaluation, including chronic constipation (as defined by the International Working Committee for Chronic Constipation), important pelvic organ prolapse (Baden-Walker score > stage 2), or any other comorbidities with a potential impact on the treatment (i.e. cognitive impairment, diabetes, active cancer, respiratory or cardiovascular conditions, etc); Currently taking medication for UI or medications affecting skeletal muscles; Considered obese with a body mass index (BMI) over 35; Had an active urinary or vaginal infection in the past 3 months; Underwent a change in hormonal replacement therapy in the past 6 months; Received pelvic floor physiotherapy treatment or surgery for UI or pelvic organ prolapse in the past year