Malhotra Varun, Thakare Avinash E, Hulke Sandeep M, Javed Danish, Dixit Ashish K, Wakode Santosh L, Cidral Francisco
Department of Physiology, AIIMS Bhopal, Bhopal, Madhya Pradesh, India.
Department of AYUSH, AIIMS Bhopal, Bhopal, Madhya Pradesh, India.
Adv Biomed Res. 2023 Mar 2;12:55. doi: 10.4103/abr.abr_66_22. eCollection 2023.
Stationary cycling is the popular, preferred, and convenient form of exercise. During exercise, autonomic modulation is seen which can be assessed by heart rate variability (HRV). The aim of the study was to evaluate the changes in HRV during mild-intensity cycling exercise.
An observational cross-sectional study was done on 20 healthy male volunteers with the age (35.44 ± 4.12), height (71.12 ± 11.98), and weight (161.23 ± 11.65), BMI (27.12 ± 3.49) attending various YOGA sessions in AYUSH OPD. Volunteers underwent an exercise program at the mild intensity of 30% to 50% of maximal heart rate on a stationary cycle for 20 min. HRV was recorded by the HRV mobile unit Dynamika Machine at rest, every 5 min (4×) over 20 min and during the recovery period. Repeated measures of analysis of variance with post-hoc analysis with Bonferroni and Holm's multiple comparisons.
Significant change was observed in mean heart rate and time domain parameters. Frequency domain parameters that showed significant change were total power, High Frequency- HF (ms), Very Low Frequency -VLF (ms), Low Frequency -LF (ms), and Very Low Frequency %-VLF (%).
The HRV parameters conclusively point towards cardiac parasympathetic withdrawal and sympathetic dominance at the initiation of exercise. With the progression of exercise, the sympathetic influence is retained. In the recovery period parasympathetic reactivation gains control over heart rate as well as HRV. The HRV response to exercise challenges may be helpful in designing exercise programs based on variations in the autonomic response.
固定自行车运动是一种受欢迎、首选且方便的运动形式。运动期间，可观察到自主神经调节，这可以通过心率变异性（HRV）进行评估。本研究的目的是评估轻度强度自行车运动期间HRV的变化。
对20名健康男性志愿者进行了一项观察性横断面研究，他们的年龄为（35.44±4.12）岁，身高为（71.12±11.98）英寸，体重为（161.23±11.65）磅，BMI为（27.12±3.49），他们在阿育吠陀门诊部参加各种瑜伽课程。志愿者在固定自行车上以最大心率的30%至50%的轻度强度进行20分钟的运动计划。在静息状态、20分钟内每5分钟（共4次）以及恢复期，使用HRV移动设备Dynamika Machine记录HRV。采用重复测量方差分析，并进行Bonferroni和Holm多重比较的事后分析。
观察到平均心率和时域参数有显著变化。显示出显著变化的频域参数有总功率、高频-HF（毫秒）、极低频-VLF（毫秒）、低频-LF（毫秒）和极低频百分比-VLF（%）。
HRV参数明确表明，运动开始时心脏副交感神经撤离且交感神经占主导。随着运动的进行，交感神经的影响得以保留。在恢复期，副交感神经重新激活对心率以及HRV获得控制。HRV对运动挑战的反应可能有助于根据自主反应的变化设计运动计划。
