Authors: Ștefan Adrian Martin1, Roxana Maria Hadmaş2, Dan Dobreanu1
1Physiology Department, University of Medicine and Pharmacy Târgu Mureș, Romania
2Community Nutrition and Food Hygiene Department, University of Medicine and Pharmacy Târgu Mureș, Romania
Background. Cardiopulmonary analysis, through VO2max testing, can represent the basis of training development.
Aims. Our aim was to demonstrate that non-specific VO2max testing can provide important information regarding cardiopulmonary adaptation and its influence over a specific maximal exercise.
Methods. The study group consisted of 8 male XC skiers with international competitive results. During day 1, one single VO2max test (T1) was conducted, assessing cardiopulmonary capacity and training periodization over day 1 to day 24. On day 24, the athletes competed in a specific 5k roller skiing event (T2), confirming individual exercise capacity, based on T1 measurements: VO2max, VE, PetO2, PetCO2, VE/VO2, RER.
Results. Between T1 – T2, all training sessions were monitored. An increased VT1, during T1 analysis, was related to the maximal HR during T2 (p=0.001). Both VT1 (p=0.03) and VT2 values (p=0.03) were correlated with the median pace during T2. During T1, the PetCO2 was significantly correlated with the VCO2 determined value (p=0.001), relating an improved CO2 removal rate.
Conclusions. Unlike PetCO2 effects on T2 performances, through PetO2 analysis, no similar results were found. Over T1, an increased aerobic activity was correlated to an improved pace and effort time during the T2 exercise. Increased VE values, along with VO2 and VE/VO2 generated an improved PetCO2 ratio and athletes’ performance, through an enhanced oxygen extraction, resulting in an improved T2 time, due to an increased aerobic power, stated in T1.
Keywords: elite, training, performance, exercise capacity