Relationship of Heart Rate and Velocity During 15 km Cross-Country Sit-Skiing Simulation Race
10.16156/j.1004-7220.2025.03.005
- VernacularTitle:15 km坐式越野滑雪模拟比赛过程中心率与速度的关系
- Author:
Xiangdong WANG
1
;
Hailiang YANG
;
Ruijiao LIU
;
Zongxiang HU
Author Information
1. 集美大学体育学院,福建厦门 361021
- Publication Type:Journal Article
- Keywords:
cross-country sit-skiing;
mid-distance cross-country ski race;
exercise intensity;
pace strategy;
speed rhythm
- From:
Journal of Medical Biomechanics
2025;40(3):545-552,579
- CountryChina
- Language:Chinese
-
Abstract:
Objective The athletic performance and physiological indicators of two top seated cross-country skiers during simulated competitions were analyzed,and the characteristics of exercise intensity and pacing strategies in different terrains were explored,so as to provide a scientific basis for physical fitness allocation and speed rhythm optimization of the athletes.Methods Differential global positioning system and Momentum Technology MT-Sports T2 were used to test athlete A and athlete B with class of locomotor winter 10(LW 10),who were the first and second runners-up of Beijing Winter Paralympic mid-distance cross-country ski race.The athletes' real-time gliding speed and heart rate during five consecutive 15 km cross-country skiing time trials were collected,and the time spent on each section,speed and heart rate changes in each course were analyzed.Results The coefficient of variation(CV)of mean heart rate on uphill and flat terrain sections were significantly correlated with total scores.The average gliding speed and average heart rate as a percentage of maximum heart rate(HRmax)of the athletes in three terrains were significantly correlated with total scores.The correlation between the mean time spent on uphill and flat terrain and total performance was stronger than that between the mean time spent on downhill terrain and total scores.Both athletes used a cumulative acceleration speed rhythm.Conclusions Uphill and flat terrain time are critical to race performance.Athletes adopt a progressive pacing strategy,gradually increasing speed in the first half,maintaining stable output in the mid-race,and finishing the last lap at a high-speed.Heart rates are mainly distributed between 70％-90％HRmax,and balancing high-intensity efforts on uphills with recovery on downhills helps optimize energy expenditure.
