Relationship between psychosomatic complaints and circadian rhythm irregularity assessed by salivary levels of melatonin and growth hormone
2011

Psychosomatic Complaints and Circadian Rhythm in Students

Sample size: 15 publication Evidence: moderate

Author Information

Author(s): Nagane Mitsuo, Suge Rie, Watanabe Shu-Ichi

Primary Institution: Chiba University, Japan

Hypothesis

Is there a connection between psychosomatic complaints and circadian rhythm irregularity in healthy students?

Conclusion

Psychosomatic symptoms, particularly anxiety, may be associated with irregularity in melatonin and growth hormone rhythms, which can be altered by basic lifestyle habits even in healthy students.

Supporting Evidence

  • Students with irregular circadian rhythms reported more psychosomatic complaints, especially anxiety.
  • Melatonin and growth hormone levels were significantly correlated in students with regular circadian rhythms.
  • The study suggests that lifestyle habits can influence hormonal rhythms and psychosomatic health.

Takeaway

Students who have trouble sleeping and feel anxious might have their bodies out of sync with their natural rhythms, which can make them feel worse.

Methodology

Fifteen healthy students' salivary melatonin and growth hormone levels were measured five times a day, and they rated their psychosomatic symptoms twice daily.

Potential Biases

The small sample size may limit the generalizability of the findings.

Limitations

The study had a small sample size, potential sleep disruption from sample collection, and possible gender differences affecting results.

Participant Demographics

15 healthy Japanese university students (7 men and 8 women) aged 21 to 22.

Statistical Information

P-Value

p<0.01

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1186/1740-3391-9-9

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