Key result
Strenuous evening exercise significantly lowered nocturnal mean pulse interval, standard deviation pulse interval, low frequency, and high frequency components (P<0.0001) compared to a control day.
Why the study?
Does strenuous exercise in the evening alter nocturnal heart rate variability in healthy men?
Observational (n=8)
No
Does strenuous exercise in the evening alter nocturnal heart rate variability in healthy men?
Strenuous evening exercise promotes sympathetic nervous activity during night sleep, with pulse rate and HRV not fully recovering by wake-up time.
Answers are grounded in this paper and cite their sources.
Strenuous evening exercise may blunt nocturnal HRV; this Level 5 observation leaves clinical implications open pending larger studies.
In this study, we examined whether or not the strenuous exercise in the evening change nocturnal heart rate variability (HRV) and recovers. Subjects were 8 healthy men belonging to the mature futsal team (age: 35 3 years) and Futsal was held from 5:00 p.m. to 6:30 p.m. on Sunday. Pulse waves during sleeping were measured at home on exercise day and on control day. The mean pulse interval (MPI), standard deviation pulse interval (SDPI), low frequency component (LF, 0.04-0.15 Hz) , high frequency component (HF, 0.15-0.45 Hz) and the ratio of LF to HF (LF/HF) were calculated from pulse interval time series every 30 min. As a result, MPI, SDPI, LF, HF of exercise day were significantly lower than control day (P< 0.0001). LF/HF of exercise day was significantly higher than control day (P< 0.05). Regarding change of HRV for every 30 min, MPI (P< 0.05), SDPI (P= 0.0003), LF (P= 0.0038), HF (P< 0.05) were observed significant changes. MPI and HF before wake-up did not reach the level of control day. It is thought that strenuous exercise in the evening promotes sympathetic nervous activity during night sleep and suggesting that pulse rate and HRV have not recovered by the wake-up time.
No takes yet. Share an insight, caveat, or question.
Yoshida et al. (2018) conducted an observational in Healthy (n=8). Strenuous evening exercise vs. Control day (no exercise) was evaluated on Nocturnal heart rate variability (MPI, SDPI, LF, HF) (p=<0.0001). Strenuous evening exercise significantly lowered nocturnal mean pulse interval, standard deviation pulse interval, low frequency, and high frequency components (P<0.0001) compared to a control day.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: