Cvyaz indeksa napryazhennosti regulyatornykh sistem i drugikh pokazatelej serdechnogo ritma so spetsial'noj rabotosposobnost'yu lyzhnikov-gonshchikov - Bogatov, A. A. (Teorija i Praktika fiziceskoj Kul'tury, 2003)
Keywords: cross-country skiing; sports medicine; heart rate; rhythm; heart; performance capacity; load intensity; Russia; biological and medical sciences; endurance sports