Search
Search Results
-
RELATIONSHIP BETWEEN NIGHT-TIME DYSPNEA EPISODES AND HEART RATE VARIABILITY
Views:982Purpose: We wanted to assess the values of expected night-time and day-time variability of the heart rate, in the presence of dyspnea episodes during night-time, recorded by a Holter monitor.
Objective: Our aim was to investigate whether nocturnal breathing disorders affect the HRV indexes.
Methods: 40 patients participated in our survey. 20 of them experienced episodes of night-time breathing difficulty, and the control group consisted of 20 participants in whose case there were no episodes of night-time breathing difficulty. We were examining the domains of time and frequency of heart rate variability, using day-time and night-time values recorded by a 24-hour Schiller Medilog Holter monitor. We evaluated the distribution of the parameters with a continuous codomain, their typical distribution and expected values on histograms, and summarized them in a table. For the examination of the difference in averages the Two-Sample T- Test was used, where p<0.05.
Results: The vegetative equilibrium ratio and the standard deviation of the R-R intervals showed a significant difference between the apnea patients and the healthy group at night. Examining the severity of apnea, we didn't find significant difference between the two groups in the mean of the time and frequency indices, however, a decrease in the values of the apnea group was observed compared to the control group.
Conclusion: Night differences in the vegetative equilibrium rate and time parameters of the apnea patients and the control group, as well as differences in the HRV index recorded by the change in the severity of the disease, draw attention to the importance of the HRV indicators with HOLTER monitors.
-
PHYSIOLOGICAL ASSESSMENT OF MOTORCYCLE RACERS FOR THE EVIDENCE-BASED TRAINING
Views:0Motorcycle racers are subjected to extreme physical and physiological stresses that can affect their performance. This research aimed to investigate physiological factors that may influence performance and to make recommendations for effective training design. Three international-level Hungarian motorcycle racers were studied in laboratory, competition, and race simulation environments. Their mean age was 20.33 years (± 2.3), sport age 15.66 years (± 3.78), body weight 73.9 kg (± 8.7), and height 1.78 m (± 0.1). Resting measurements, load tests, and track tests were performed during the study. To analyze exercise stress in competitive conditions, we used heart rate monitoring and lactate measurements during the final round of the 2024 World Endurance Championships and a track test in Hungary. The laboratory measurements identified three athletes with different fitness statuses, who demonstrated significant individual differences in both cardiovascular and metabolic load during racing. The results showed that the pilot with greater aerobic capacity had a higher relative heart rate and lower lactate levels, whereas the pilot with greater anaerobic capacity showed the opposite. This suggests that energy production processes differ between riders. Aerobic capacity primarily supports recovery and more economical energy production, while anaerobic fitness can provide the performance needed for high-intensity activities. Striking the right balance can be the key to optimizing riders' performance.
-
THE INVOLVEMENT OF ADVANCED COGNITIVE SKILLS IN VARIOUS FOOTBALL – SPECIFIC TESTS A PILOT STUDY
Views:533Sports professionals should encourage the development of cognitive functions as often as possible in training. Stimulating the brain with alternating stimuli can promote concentration, attention, and the development of situational awareness and decision-making skills. The more and more diverse stimuli the player receives, the faster and more effectively he will react to match situations. Our research examined the effect of exercises requiring advanced cognitive skills on the training load. Changes in cardiovascular data were monitored using Polar Verity Sense 4J and Polarflow systems. The pilot study involved a U-16 football player. Our results demonstrated that in addition to increasing speed, duration, and number of repetitions, the gradual inclusion of decision-making situations can also effectively increase the load. The participant completed two sets of exercises. During the second test, more complex exercises required advanced cognitive skills. The average heart rate for the first test was 130 beats per minute. We experienced an increase in the average value (150 beats per minute) during the completion of the second test. We measured an average 15 percent increase in the participants' heart rate.
-
COMPLEX PERFORMANCE ANALYSIS IN BALL SPORTS
Views:1625Assessing athletes' capabilities has never been as widespread as it is nowadays. Several methods have evolved and developed in recent decades to measure physical or mental skills accurately. However, these assessment protocols became more and more specific. They focused on a certain attribute, as if we forget that athletes' game performance is not equal to the total of different skills. Since psychomotor skills interact during games, test protocols should be similar and measured comprehensively. Two groups of ball sport players, thirteen soccer players (n=13) and ten handball players (n=10), have been tested on the SpeedCourt training system to find a relationship between the results of two tests (Micromovement Test, MT) and traditional indicators, such as Heart Rate Recovery (HRR), Body Mass Index (BMI) and Body Fat Percentage (BFP). Furthermore, the correlation in performances of the two groups has also been analyzed. We found no significant correlation between the two MT and HRR results (r=0,5132 and r=-0,5588). Similarly, there are significant correlation neither MT and BMI (r=-0.0886 and r=-0.0174) nor MT and BFP results (r=0.0872 and r=-0,2399). A significant difference cannot be found between the MT results of the two groups that indicate that MT applicable for both sports.