Sixty women with patellofemoral pain syndrome were randomized to receive supervised exercise (SE, n=20), web-based exercise (WBE, n=20), or self-guided exercise (SGE, n=20) for six weeks. The primary outcome was the Kujala Anterior Knee Pain Scale. Secondary outcomes included pain at rest and during activity (VAS), mobility (Timed Up and Go test), and kinesiophobia (Tampa Scale). Outcomes were ass...