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 re-sult, 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 ob-served significant changes. MPI and HF before wake-up did not reach the level of control day. It is thought that strenuous exercise in the eve-ning promotes sympathetic nervous activity during night sleep and sug-gesting that pulse rate and HRV have not recovered by the wake-up time.
- Autonomic nervous system
- Nocturnal heart rate variability
- Pulse waves
- Strenuous exercise
ASJC Scopus subject areas
- Physical Therapy, Sports Therapy and Rehabilitation
- Orthopedics and Sports Medicine