Why the study?
It was unclear whether exercise training conducted at night disturbs sleep and affects nocturnal cardiac autonomic control in high-level female athletes.
Does night exercise training affect sleep patterns and nocturnal cardiac autonomic activity in high-level female soccer players, and does the Firstbeat Bodyguard 2 device accurately measure R-to-R intervals in healthy volunteers?
Population
18 high-level female soccer players (mean age 20.4 y)
Comparison
Night training days vs resting days
Design
Longitudinal study
Follow-up
3 consecutive weeks
Authors
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Night training showed no clear impact on sleep or nocturnal HRV; leaves open questions on individual responses and optimal scheduling in female athletes.
Does night exercise training affect sleep patterns and nocturnal cardiac autonomic activity in high-level female soccer players, and does the Firstbeat Bodyguard 2 device accurately measure R-to-R intervals in healthy volunteers?
Night training in female soccer players reduces sleep time and increases nocturnal heart rate, while the Firstbeat Bodyguard 2 device provides accurate long-term HRV monitoring.
Costa et al. (2018) studied this question.
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