Hubungan antara Durasi Pasien Mengikuti Senam Asma Indonesia di Klub Asma Rumah Sakit Persahabatan dengan Nilai Arus Puncak Ekspirasi Pasca Latihan = The Relationship between Patient's Duration of Indonesian Asthma Gymnastics in Persahabatan Hospital's Asthma Club with The Value of Peak Expiratory Flow Rate Post Exercise