• Medical Physiology
• Clinical Exercise Physiology
• Sports Medicine
• Cardiopulmonary Rehabilitation
• Cardiopulmonary Fitness testing

• Cardio-endurance training of athletes and clinical patients with NCD
• Cardiac rehabilitation
• Pulmonary Rehabilitation
• Cardiopulmonary exercise fitness testing
• Obesity and exercise prescription in obesity management

Original articles published in foreign and local indexed Journals

• Wijayasiri, KDC, Perera, Chamilya & Jayamaha, Akila & Jones, Amy & Yusuf, Zainab K & Amarasekara, Thamara & Seneviratne, Anthony & Miah, Ruhme & Barton, Andy & Steiner, Michael & Wimalasekera, Savithri & Orme, Mark & Singh, Sally. (2022). Developing Appropriate Pulmonary Rehabilitation Services in Sri Lanka: Assessment of People Living with COPD and Healthcare Providers in Urban and Semi Urban Areas in Sri Lanka. International Journal of Chronic Obstructive Pulmonary Disease. Volume 17. 631-641. 10.2147/COPD.S316555.
• Upendra K.D.C. Wijayasiri, Jayamaha, A.R., Perera, C.H., Orme, M.W., Jones, A.V., Amarasekara, T.D., Karunatillake, R.S., Fernando, A., Seneviratne, A.L., Barton, A. and Jones, R., 2020. Protocol for the cultural adaptation of pulmonary rehabilitation and subsequent testing in a randomised controlled feasibility trial for adults with chronic obstructive pulmonary disease in Sri Lanka. BMJ open, 10(11), p.e041677.
• Wijayasiri KDCU, Wimalasekera SW, Ishikawa Y, Waidyasekara H, Sivayogan S, 2021. Cardiopulmonary Function of Sri Lankan male long distance runners and male sprint runners – A descriptive study Galle Medical Journal, 26 (2), p. 53-59.

Abstracts

• Wijayasiri K. D. C. U., Perera A. C. H, Yusuf, Z.K , Jayamaha A. R., Orme M. W., Amarasekara A. A. T , Seneviratne, A.L. P. S., Jones A. V.,, Miah R. B., Jones R., Barton A, Steiner M. C., Wimalasekera S. W., Singh, S. 2021. Health care professionals’ perspectives towards culturally appropriate pulmonary rehabilitation program for adults with chronic obstructive pulmonary disease in Sri Lanka: A qualitative study. Will be published at European Respiratory Society (ERS) Annual Congress 2021, 20 – 30 September 2021, Greece.
• Wijayasiri KDCU, Wimalasekera SW, Waidyasekara H, Sivayogan S, Thurairaja C. 2019. Relation of peak Oxygen uptake with peak Heart rate and peak Load in Sri Lankan national level runners. Published in proceedings of 132nd anniversary medical congress of the Sri Lanka Medical Association, 24th -17thJuly, 2019. OP 18, page: 17.
• Wijayasiri K. D. C. U., Jayamaha Akila R. Perera A. Chamilya Hiroshini, A. A Thamara Amarasekara, Seneviratne, A.L P De S., Mark Orme, Michael Steiner, Rupert Jones Wimalasekera Savithri W., Singh, Sally. 2019. Is Pulmonary Rehabilitation an acceptable method of care for patients with COPD? Results from Sri Lanka. Published during IPCRG 6th Scientific Meeting, Bucharest, Romania, 24-25 May 2019.
• Wijayasiri K. D. C. U., Jayamaha Akila R., Perera A. Chamilya Hiroshini, A. A Thamara Amarasekara, Seneviratne A.L P De S. , Mark Orme, Michael Steiner, Rupert Jones, Wimalasekera Savithri W., Singh, Sally. 2019. Opinions and Practice of Pulmonary rehabilitation amongst health care providersin selected areas of Sri Lanka. Published during IPCRG 6th Scientific Meeting, Bucharest, Romania, 24-25 May 2019.
• Wijayasiri KDCU, Wimalasekera SW, Waidyasekara H, Sivayogan S, Thurairaja C. 2019 Peak oxygen consumption and blood lactate responses to training of Sri Lankan national male endurance runners; a comparative study. Proceedings of the International conference on health sciences 2019, Colombo, Sri Lanka, October, 2019. OP no; 09, page no: 62-63.
• Wijayasiri K.D.C.U., Wimalasekera S.W., Sivayogan S., Thurairaja C, Waidyasekara H. 2018. Effectiveness of Training on Cardio-Pulmonary Fitness of Sri Lankan National Sprinters. The Ceylon Medical Journal, volume 63, supplements 01, July 2018; page 39.
• Wijayasiri K.D.C.U., Wimalasekera S.W., Sivayogan S., Thurairaja C, Waidyasekara H. 2018. Cardio-Pulmonary Fitness Amongst Sri Lankan National Athletes Engaged In Running Events And Their Determinants. Online proceedings of the SMAS (Singapore sports medicine association) annual symposium 2018, Tan Tok Sand hospital, Singapore (12th May 2018). Online link; https://www.smasas.com/abstract-publication, OP no; 01, page 01.
• Wijayasiri, K.D.C.U., Wimalasekera, S.W., Waidyasekara, H., Sivayogan, S. and Thurairaja, C., 2017. Impact of Training; Cardio-Pulmonary Fitness of Sri Lankan National Level Athletes Engaged In Running Events. Proceedings of the 4th International conference on multidisciplinary approaches (iCMA), Hikkaduwa, Sri Lanka, (September, 2017). OP no; 14, page no: 57. Online link: dr.lib.sjp.ac.lk
• Wijayasiri K.D.C.U., Wimalasekera S.W., Sivayogan S., Thurairaja C, Waidyasekara H. 2017. Cardio-pulmonary functions of athletes involving in running events; implication for primary care physicians in Sri Lanka. Proceedings of the 1st International Primary Care Respiratory Group (IPCRG) South Asian Scientific Conference, Colombo, Sri Lanka. August 2017. PP no: 04, page no: 70.
• Wijayasiri K.D.C.U., Wimalasekera S.W., Perera LDCK, Jayathilake ADMADZ, Manohari SLMDH. 2017. Prediction of Cardio-pulmonary fitness parameters of healthy school boy athletes in Colombo district, Sri Lanka. Proceedings of the 1st International Primary Care Respiratory Group (IPCRG) South Asian Scientific Conference, Colombo, Sri Lanka. August 2017. PP no: 22, page no: 88.
• Wijayasiri K.D.C.U., Wimalasekera S.W., Sivayogan S., Thurairaja C, Waidyasekara H. 2016. A preliminary study of Cardio- Pulmonary fitness amongst Sri Lankan national athletes engaged in running events and their determinants. Proceedings of the 129th Anniversary International Medical Congress Of The Sri Lanka Medical Association (SLMA), Colombo, Sri Lanka. (July 2016). OP no: 64, pgs: 141-142.
• D.C.U. Wijayasiri, S.W. Wimalasekera, C. Thurairaja. 2015. Does training improve pulmonary functions of Sri Lankan cricketers?. Proceedings of the 5th World Congress of Science and Medicine in Cricket (WCSMC), Sydney, Australia. March 2015. Oral presentation, Pg 107.
• Wijayasiri K.D.C.U, Wimalasekera S.W. 2015. Do Sri Lankan national level athletes breathe enough? – Effects of training on Pulmonary Functions. Proceedings of the 8th International Research Conference, General Sir John Kotelawala Defense University, Colombo, Sri Lanka. August, 2015. PP no: 13, page 146.
• Wijayasiri K.D.C.U, Wimalasekera S.W., Thurairajah. 2014. Effects of Training on pulmonary function amongst Sri Lankan national level athletes. Proceedings of the 4th Biennial Regional Conference of South Asian Association of Physiologists (SAAP) and 3rd National Convention of Bangladesh Society of Physiologists (BSP), Dhaka Bangladesh, December 2014, OP no 04.
• Wijayasiri KDCU, Wimalasekera SW, Waidyasekara H, Sivayogan S, Thurairaja C. 2019. A comparative study of Peak Oxygen Consumption and Blood Lactate response to training of Sri Lankan male long distance runners in different competitive levels and Asian male long distance runners. Proceedings of the Annual academic session of Colombo South Teaching Hospital, Colombo, Sri Lanka. February, 2019. Oral presentation 08, page no: 08.
• Wijayasiri K.D.C.U, Gunasekara P.A.D, Ranasinghe D.D, Epa E. 2018. Ultra Sound Guided Injection of Platelet Rich Plasma (PRP). Proceedings of the Annual academic session of Colombo South Teaching Hospital, Colombo, Sri Lanka. January, 2018. Poster presentation, page no: 27.
• Wijayasiri K.D.C.U., Wimalasekera S.W., Sivayogan S., Thurairaja C, Waidyasekara H. 2018. Impact of training on Cardio-pulmonary fitness of Sri Lankan national level athletes engaged in running events. Proceedings of the Annual academic session of Colombo South Teaching Hospital, Sri Lanka, January, 2018. OP no; 04, page no: 12.
• Wijayasiri K.D.C.U, Wimalasekera S.W., Thurairajah C. 2015. Does training improve the Pulmonary Function amongst Sri Lankan National level Athletes? Proceedings of the Annual Scientific Sessions 2015, Faculty of Medical Sciences, University of Sri Jayewardenepura, Colombo, Sri Lanka (April 2015). OP no: 08.
• Wijayasiri K.D.C.U, Wimalasekera S.W., Thurairajah C. 2013. CardioPulmonary Fitness amongst Sri Lankan National Athletes – Preliminary Results. Proceedings of Annual Academic sessions of the Physiological Society of Sri Lanka (PSSL), Colombo Sri Lanka, November 2013. OP no; 16, page 18 – 19.

1^st place, best oral presentation:

• Peak oxygen consumption and blood lactate responses to training of Sri Lankan national male endurance runners; a comparative study. Wijayasiri KDCU, Wimalasekera SW, Waidyasekara H, Sivayogan S, Thurairaja C. Proceedings of the International conference on health sciences 2019, Colombo, Sri Lanka, (October, 2019).

Research grants

• University research grant, University of Sri Jayewardenepura, Sri Lanka. Grant No: ASP/01/RE/MED/2018/62. Title of the research project: Cardiopulmonary fitness amongst Sri Lankan national athletes engaged in running events, their determinants, and effects of specialised training on cardiopulmonary fitness of male endurance running athletes.
• University research grant, University of Sri Jayewardenepura, Sri Lanka. Grant No: SP/07/RE/MED/2016/31. Title of the research project: Cardiopulmonary fitness amongst Sri Lankan national athletes engaged in running events and their determinants.
• Research grant awarded by the Education, Training and Research (ETR) division, Ministry of Health, Sri Lanka. Award No: ETR/M/MC/RP/455/2013. Title of the research project: Pulmonary function tests amongst Sri Lankan national athletes.
• Research grant awarded by the Education, Training and Research (ETR) division, Ministry of Health, Sri Lanka. Award No: ETR/M/MC/RP/1133/2015. Title of the research project: Cardiopulmonary fitness amongst Sri Lankan national athletes engaged in running events and their determinants.
• Research grant awarded by the Education, Training and Research (ETR) division, Ministry of Health, Sri Lanka. Award No: ETR/M/MC/RP/2126/2019. Title of the research project: Assessment of the needs for the pulmonary rehabilitation amongst patients with chronic obstructive airway disease and health care providers of patients with COPD

 Training grants

• Overseas training grant awarded by the National Science Foundation (NSF) Sri Lanka - 2018. Grant No: OSTP/2018/09.
• Overseas training grant awarded by the National Science Foundation (NSF) Sri Lanka - 2016. Grant No: OSTP/2016/39.

• Member of American Association of Cardiovascular and pulmonary rehabilitation
• Senior Researcher, cardiovascular research institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan from 2018 to 2020.
• Clinical trainer (Hospital bound clinical sports medicine short appointment), post graduate Diploma in Family Medicine program, Post Graduate Institute of Medicine, University of Colombo, Sri Lanka.
• Clinical trainer (Hospital bound clinical sports medicine short appointment), post graduate MCGP degree program, Collage of General Practitioners of Sri Lanka, from 2016 to 2021.
• Specialist exercise physiologist and advisor of cardiopulmonary fitness assessment and training, SAG secretariat for South Asian Games - 2019, Ministry of Sports Sri Lanka.
• Sports physician and exercise physiologist, National Olympic Committee (NOC), Sri Lanka, from 2018 to up to date.
• Member, Expert Committee for training Curriculum Evaluation of National Vocational Qualification (NVQ) level 04, National Apprentice and Industrial Training Authority (NAITA), Sri Lanka.
• Advisor (Fitness improvement and Injury prevention), Sri Lanka Athletic Association (AAASL) from 2015 to 2017.
• Medical director of Sports Medicine and Emergency medical services of “ X30 Asia Cup 2018” an international Go-Kart racing event in 11th to 14th January 2018 at Sri Lanka Karting circuit, Bandaragama, Sri Lanka.