Main Research Interests:

Autonomic nervous system control of physiological systems in health and disease, and during physical exercise

Heart rate variability and ventricular repolarisation (QT) variability analysis

Physiological measurement technology

Physiological signal processing and analysis

Software and algorithm development using Matlab

Applications of physics, maths, engineering and technology in medicine

Cardiac monitoring and assessment in the foetus and neonate

Haemodynamic, cardiovascular and respiratory physiology

Biomagnetism

 

Current Research Projects:

Cardiovascular autonomic control mechanisms during physical exercise

The effects of bariatric (obesity) surgery on cardiac, respiratory and metabolic parameters

The effects of increased intra-abdominal pressure on cardiac parameters before, during and after laparoscopic bariatric and non-bariatric surgery

The influence of attempted smoking abstinence and nicotine replacement therapy on cardiac autonomic control

Heart rate variability and physical activity, pre and post long-term oxygen therapy in severe chronic obstructive pulmonary disease (COPD)

Cardiovascular and respiratory parameters in patients with the sleep apnoea syndrome, including the effects of continuous positive airway pressure (CPAP)

Heart rate variability and ageing (“Older People's Use of Unfamiliar Spaces”).

Influence of exercise training in patients with chronic kidney disease receiving haemodialysis: heart rate variability (HRV) and heart rate turbulence (HRT)

 

Administration duties

School Chair and Director of Third Mission Activities, School of Human Sciences

Chair, Departmental Ethical Advisory Committee

School Representative, Library Users Group

Departmental Representative, Faculty of Health and Human Sciences

Member of Departmental committees on Learning and Teaching, and Research

Member of the Swansea In Vivo Analysis and Cancer (SIVAC) research group (Swansea NHS Trust)

 

Recent Publications

Refereed journal publications:

Lewis MJ, Short AL. (2007) Sample entropy of electrocardiographic RR and QT time-series data during rest and exercise. Physiological Measurement 28(6):731-744.

 

Lewis MJ, Kingsley M, Short AL, Simpson K. (2007) Influence of high-frequency bandwidth on heart rate variability analysis during physical exercise. Biomedical Signal Processing and Control (2007) 2(1):34-39.

 

Lewis MJ, Kingsley M, Short AL, Simpson K. (In Press, Available Online) Rate of reduction of heart rate variability during exercise as an index of physical work capacity. Scandinavian Journal of Medicine and Science in Sport (2007) doi: 10.1111/j.1600-0838.2006.00616.x.

 

Hughes G, Watkins J, Owen N, Lewis M. (2007) Gender differences in knee kinematics during landing from volleyball block jumps. Journal of Human Movement Studies 52 (1): 1-20.

 

Lewis MJ, Short AL. (2006) Differences in QT interval determined from multi-lead ambulatory ECG during rest and physical exercise. Biomedical Signal Processing and Control 1:219-228.

 

Lewis MJ, Rassi D, Short AL. (2006) Analysis of the QT interval and its variability in healthy adults during rest and exercise. Physiological Measurement 27(11):1211-26.

 

Lewis MJ, Short AL, Lewis KE. (2006) Autonomic nervous system control of the cardiovascular and respiratory systems in asthma. Respiratory Medicine 100(10):1688-705.

 

Lewis MJ, Short AL. (2006) Hysteresis of electrocardiographic depolarization-repolarization intervals during dynamic physical exercise and subsequent recovery. Physiological Measurement 27(2):191-201.

 

Lewis MJ, Davies R, Jenkins D, Tait MI. (2005) A review of evaluative studies of computer-based learning in nursing education. 2001. Nurse Education Today 25(8):586-97.

 

Lewis MJ. (2005) Heart rate variability analysis: a tool to assess cardiac autonomic function.

         CIN: Computers Informatics Nursing 23(6):335-41.

 

Kingsley M, Lewis MJ, Marson RE. (2005) Comparison of Polar 810s and an ambulatory ECG system for RR interval measurement during progressive exercise. International Journal of Sports Medicine 26(1):39-44.

 

Lewis MJ. (2003) Review of electromagnetic source investigations of the fetal heart.

         Medical Engineering and Physics 25(10): 801-810.

 

Lewis MJ. (2003) Biomagnetism: a new tool in sport and exercise science. Journal of Sports Sciences 21(10): 793-802.

 

Lewis MJ. (2003) Computer-assisted learning for teaching anatomy and physiology in subjects allied to medicine. Medical Teacher 25(2): 214-16.

 

Lewis MJ, Davies R, Jenkins D, Tait M. (2001) A review of evaluative studies of computer-based learning in nursing education. Nurse Education Today 21:26-37

 

Zhuravlev Y, Lewis MJ, Rassi D, Emery S. (2000) Magnetocardiographic monitoring of the fetal autonomic nervous system. In: Aine CJ et al. (Eds.) Biomag96. New York: Springer. p589-592.

 

Rassi D, Zhuravlev YE, Lewis MJ, Emery SJ. (2000) Vector fetal magnetocardiography. In: Aine CJ et al. (Eds.) Biomag96. New York: Springer. p533-536.

 

Rassi D, Lewis MJ. (1995) Power spectral analysis of the foetal magnetocardiogram.

Physiological Measurement 16:111-120.

 

Books:

Lewis MJ, Davies R, Green B, Jenkins D and Tait M. (2000) A review of computer-based learning in nursing education. University of Wales Press. ISBN 0 86076 164 9.

 

Refereed conference publications:

Alam I, Lewis MJ, Lewis KE, Hilldrup S, Stephens J, Baxter JN. (2007) Influence of bariatric surgery on indices of cardiac autonomic control. 9th Meeting of the European Federation of Autonomic Societies, 18th Meeting of the American Autonomic Society, 2nd Joint Meeting EFAS – AAS. Clinical Autonomic Research 17(5):316

 

Alam I, Lewis MJ, Lewis KE, Hilldrup S, Stephens J, Baxter JN. (2007) Influence of bariatric surgery on indices of cardiac autonomic control. AUGIS - Association of Upper Gastrointestinal Surgeons Annual Scientific Meeting (Cardiff, UK). British Journal of Surgery 95 (S5):50.

 

Alam I, Lewis KE, Lewis MJ, Fielding A, Hilldrup S, Stephens J, Baxter JN. (2007) Comparing early effects of biliopancreatic diversion (BPD) versus laparoscopic gastric banding (LGB) on metabolic and physiological parameters in morbidly obese subjects. AUGIS - Association of Upper Gastrointestinal Surgeons Annual Scientific Meeting (Cardiff, UK). British Journal of Surgery 95(S5):54.

 

Alam I, Lewis MJ, Lewis KE, Hilldrup S, Stephens J, Baxter JN. (2007) Influence of bariatric surgery on indices of cardiac autonomic control. IPEM - Institute of Physics and Engineering in Medicine Annual Scientific Meeting (Cardiff, UK).

 

Alam I, Lewis KE, Lewis MJ, Hilldrup S, Stephens J, Baxter JN. (2007) Improvement in upper airway (UA) dynamics following bariatric surgery, despite patients remaining morbidly obese on early review. Association of Surgeons of Great Britain and Ireland: 2007 Annual Scientific Meeting, Manchester, UK. British Journal of Surgery 94 (Suppl 2):107.

 

Alam I, Lewis MJ, Lewis KE, Stephens J, Hilldrup S, Fielding A, Baxter JN. (2007) Bariatric surgery reverses risk factor for cardiac arrhythmia and sudden cardiac death. Association of Surgeons of Great Britain and Ireland: 2007 Annual Scientific Meeting, Manchester, UK. British Journal of Surgery 94 (Suppl 2):129.

 

Alam I, Lewis KE, Lewis MJ, Stephens J, Baxter JN. (2007) Significant improvement in upper airway (UA) dynamics following bariatric surgery, despite patients remaining morbidly obese on early review. ATS 2007: The International Conference of the American Thoracic Society. San Francisco, USA. American Journal of Respiratory and Critical Care Medicine 175 (Abstracts)

 

Lewis MJ, Short AL, Simpson K. (2005) Changes in baroreceptor sensitivity and responsiveness following dynamic physical exercise. All-Wales Medical Physics and Clinical Engineering Summer Meeting, Singleton Hospital, Swansea, UK (25th June 2005)

 

Lewis MJ, Short AL. (2005) Electrocardiographic studies of ventricular depolarisation-repolarisation during physical exercise and subsequent recovery. All-Wales Medical Physics and Clinical Engineering Summer Meeting, Singleton Hospital, Swansea, UK (25th June 2005)

 

Lewis MJ, Kingsley M. (2003) Heart rate variability analysis during dynamic exercise. Third International Workshop on Non-invasive Haemodynamic, Autonomic and Vascular Monitoring, Graz, Austria. Clinical Autonomic Research 13(1):57.

 

Lewis MJ, Kingsley M, Short A, Simpson K, Marson R. (2003) Effects of dynamic exercise on baroreceptor sensitivity and haemodynamics. Third International Workshop on Non-invasive Haemodynamic, Autonomic and Vascular Monitoring, Graz, Austria. Clinical Autonomic Research 13(1):58.

 

Lewis MJ, Kingsley M. (2002) Modelling cardiovascular autonomic control during dynamic exercise. In: Truscott J. (Ed.) Proceedings of Simulation and Modelling Applied to Medicine III, Institute of Physics, London, p3.

 

Recreation/Sport

Golf, squash, badminton