Dr Stefan Kolimechkov

Dr Stefan Kolimechkov BA, MA, PhD

Postgraduate Research Student

Stefan Kolimechkov is an MPhil/PhD student in Human Sciences at the University of Greenwich, London. His current research focuses on the effectiveness of microcurrent electrical neuromuscular stimulation and resistance exercise to counteract the loss of muscle mass and strength which accompanies aging.

Stefan obtained his Bachelor's degree in Sport and Physical Education from the National Sports Academy in Sofia, Bulgaria in 2011, and the following year he completed his Master's degree in Physical Education at the same University. Furthermore, he did a course in Bodybuilding and Fitness-Bodybuilding, which gained him the status of Level 6 Personal Trainer, Advanced Health and Exercise Specialist awarded by the European Register of Exercise Professionals (EREPS). Stefan worked as a gymnastics coach from 2008 until 2012 at the Levski Gymnastics Club in Sofia, Bulgaria. During this time, many of his students won medals and certificates from club, regional, national and international gymnastics competitions. Stefan competed as a gymnast as well, representing his university team A-Gym NSA Gymnastics Club in many National Gymnastics Championships. In 2012, Stefan was ranked 4th on the Men’s Rings in Bulgaria at the National Gymnastics Championships.

In 2013, Stefan moved to work and live in London. He started coaching gymnastics at Elite Gymnastics Academy CIC, and then provided gymnastics coaching and volunteered as a PE assistant at St Edmund’s Primary School in London. Between 2015 and 2018, Stefan did a part-time PhD in Physical Education at the National Sports Academy in Bulgaria. His PhD thesis focused on the nutrition and health-related physical fitness of primary school children engaged in artistic gymnastics, and he managed to fund his project himself while working in London as a gymnastics coach. In 2018, at the age of 30, he was officially admitted to the degree of Doctor of Philosophy after an excellent defence of his thesis.

In 2020, Stefan obtained his British citizenship. He holds a Qualified Teacher Status (QTS), Personal Trainer Practitioner status, and Level 3 British Gymnastics Coaching Qualification. Stefan runs his own personal training business (STK SPORT), providing gymnastics and yoga lessons. His main goal is to help people recognise and experience the joy of doing gymnastics and/or yoga in order to sustain a healthier and more fulfilling lifestyle.


Three-time London Gymnastics Champion on Rings (2015, 2016, 2017)


American College of Sports Medicine (ACSM)

European College of Sport Science (ECSS)

International Federation of Physical Education (FIEP)

Chartered Institute for the Management of Sport and Physical Activity (CIMSPA)

British Gymnastics

Research / Scholarly interests

Stefan presented some of his research at international scientific conferences in physical education, and sport and exercise sciences, including the British Association of Sport and Exercise Sciences Conference in Nottingham in 2017, and in Harrogate in 2018, as well as the FIEP European Congress in Luxembourg in 2017, and in Istanbul in 2018. As part of his research, and with the help of his supervisors Assoc. Prof. Petrov and Professor Alexandrova, he developed sports software called ‘BeepShuttle’ which administers the 20m shuttle run test, calculates the predicted maximum oxygen consumption (VO2max), and provides a percentile score for each participant based on age- and gender-specific norms.

Stefan’s current research at the University of Greenwich is supervised by Professor Fernando Naclerio and Professor Ian Swaine, and it is focused on the effects of microcurrent therapy and resistance exercises on sarcopenia (a major health problem linked to disability, poor quality of life, and increased risk of death) in older adults.