TITLE:
Changes before and after improvement of subjective sleep state of a man diagnosed with pre-diabetes and sleep disorder
AUTHORS:
Miki Sato, Yuko Yasuhara, Tetsuya Tanioka, Yukie Iwasa, Toshiyuki Yasui, Masafumi Miyake, Haruo Kobayashi, Waraporn Kongsuwan, Rozzano C. Locsin
KEYWORDS:
Actigraphy; Heart Rate Variability; Autonomic Nervous System; Function; Disturbed sleep; Pre-Diabetes
JOURNAL NAME:
Health,
Vol.5 No.3A,
March
29,
2013
ABSTRACT: The purpose of this case study was to examine the
changes before and after improvements of the subjective sleep status of Mr A, a
40-year-old man diagnosed with pre-diabetes and a sleep disorder. Data were
collected using a Holter monitor for 24 hours a day for 3 days to assess
autonomic nervous activity by recording bed-time and
waking time activity (activity counts: ACs). Mr. A kept a diary of activities and completed the Pittsburgh
Sleep Quality Index (PSQI) questionnaire. The study revealed that subjective sleeping hours
correlated almost precisely with those measured by the actigraph and as
described in the diary. Both the parasympathetic and sympathetic nervous system
activities were imbalanced. However, no correlation was observed between the
ACs and autonomic nervous activity. Subjective sleep state according to the PSQI score
improved remarkably by dietary and exercise therapy from 13 to 3 points, after
six months, with corresponding high level sleep satisfaction level.
Significant correlations were observed between ACs and high-frequency spectral
power of R-R intervals, and between ACs and the low-frequency/high frequency
ratio of spectral power of R-R intervals. Although Mr. A’s sleep satisfaction
level has improved, the autonomic nervous system
activity remained different from
that of healthy people.