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Evening melatonin in January after changes in hours of habitual exercise during fall among youths living in the subarctic.
(Journal article; Tidsskriftartikkel; Peer reviewed, 1994)
Secretion of the hormone melatonin shows a circadian rhythm and is inhibited by light. Light therapy with phase shifting of the melatonin rhythm has been used as treatment of sleeping problems and seasonal affective disorders (SAD). Exercise has also been shown to suppress the melatonin secretion. In order to investigate the effect of increased level of habitual physical activity upon ...