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https://open.uns.ac.rs/handle/123456789/15535
Title: | Heart rate variability before and after cycle exercise in relation to different body positions | Authors: | Otto Barak Đorđe Jakovljević Jelena Popadić Gaćeša Zoran Ovcin David Brodie Nikola Grujić |
Keywords: | Heart rate variability;recovery;exercise | Issue Date: | 1-Jun-2010 | Journal: | Journal of Sports Science and Medicine | Abstract: | The purpose of this study was to assess the effect of three different body positions on HRV measures following short-term submaximal exercise. Thirty young healthy males performed submaximal cycling for five minutes on three different occasions. Measures of HRV were obtained from 5-min R to R wave intervals before the exercise (baseline) and during the last five minutes of a 15 min recovery (post-exercise) in three different body positions (seated, supine, supine with elevated legs). Measures of the mean RR normal-to-normal intervals (RRNN), the standard deviation of normal-to-normal intervals (SDNN), the root mean square of successive differences (RMSSD) and the low-frequency (LF) and the high-frequency (HF) spectral power were analyzed. Post-exercise RRNN, RMSSD were significantly higher in the two supine positions (p < 0.01) compared with seated body position. Post-exercise ln LF was significantly lower in the supine position with elevated legs than in the seated body position (p < 0.05). No significant difference was found among the three different body positions for postexercise ln HF (p > 0.05). Post-exercise time domain measures of HRV (RRNN, SDNN, RMSSD) were significantly lower compared with baseline values (p < 0.01) regardless body position. Post-exercise ln LF and ln HF in all three positions remained significantly reduced during recovery compared to baseline values (p < 0.01). The present study suggests that 15 minutes following short-term submaximal exercise most of the time and frequency domain HRV measures have not returned to pre-exercise values. Modifications in autonomic cardiac regulation induced by body posture present at rest remained after exercise, but the post-exercise differences among the three positions did not resemble the ones established at rest. © Journal of Sports Science and Medicine. | URI: | https://open.uns.ac.rs/handle/123456789/15535 |
Appears in Collections: | FTN Publikacije/Publications |
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