M. S. Smirnov
Saint-Petersburg Scientific-Research Institute for Physical Culture
Russian Federation

 Mikhail S. Smirnov – Postgraduate at the Department of Sports Biochemistry

Ligovsky ave. 56E, Saint Petersburg 191040, Russian Federation 

V. V. Dorofeykov
Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg
Russian Federation

Vladimir V. Dorofeykov – Dr. Sc. (Med.), Professor, Head of the Department of Biochemistry

Dekabristov str. 35, Saint Petersburg 190121, Russian Federation 

N. D. Golberg
Saint-Petersburg Scientific-Research Institute for Physical Culture
Russian Federation

Natalia D. Golberg – Cand. Sc. (Biol.), Docent, Head of the Department of Sports Biochemistry

Ligovsky ave. 56E, Saint Petersburg 191040, Russian Federation 

E. V. Kurochkina
St. Petersburg Cross-Country Skiing Federation
Russian Federation

Evgenia V. Kurochkina – Vice President

Verkhnyaya str. 6A, office 7-n-7, Saint Petersburg 194292, Russian Federation