Efektifitas modalitas latihan di darat dan di air terhadap peningkatan kekuatan otot pada pasien post rekonstruksi anterior cruciate ligament phase 3 di ruang rehabilitasi RSPAD Gatot Soebroto Jakarta = Effectiveness of modality exercise on land and in water for the improvement of muscle strength in post reconstruction anterior cruciate ligament phase 3 patients in rehabilitation room Gatot Soebroto Hospital Jakarta