Subramanian, Visalakshi H.Chennakeshawaran, ArunaKumar, Vijay Krishna2020-11-182020-11-182020-10Subramanian Visalakshi H., Chennakeshawaran Aruna, Kumar Vijay Krishna. Correlation between peak expiratory flow rate and pectoralis muscle length. International Journal of Research in Medical Sciences. 2020 Oct; 8(10): 3643-36462320-60712320-6012http://imsear.searo.who.int/handle/123456789/212659Background: Peak expiratory flow rate (PEFR) is a measure of the maximum speed of exhalation after a deep inspiration. The peak expiratory flow is measured by a device named peak flow meter. This study concentrates on the correlation of the PEFR with the pectoral muscle length.Methods: It is a cross sectional study of 30 convenient samples based on gender distribution where the PEFR and pectoralis muscle length were measured in the subjects.Results: Statistical analysis shows that there is a significant correlation between right pectoralis major general muscle length and PEFR (p=0.030), left pectoralis major general muscle length and PEFR (p=0.014), right pectoralis major clavicular end muscle length with PEFR (p=0.010).Conclusions: There is a significant correlation between peak expiratory flow and pectoralis muscle length.PEFRPectoral muscle lengthTightnessJournal ArticleIndiaDepartment of Physiotherapy, Dr. B. R. Ambedkar Medical College and Hospital, Bangalore, Karnataka, India