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Reduction in salivary α-amylase levels following a mind-body intervention in cancer survivors--an exploratory study.

David L. Lipschitz, Renee Kuhn, Anita Y Kinney, Gary W Donaldson, Yoshio Nakamura

Psychoneuroendocrinology February 1, 2013 DOI: 10.1016/j.psyneuen.2012.12.021 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Randomized controlled trial Peer reviewed
Sample size 57
Population Female and male cancer survivors with self-reported sleep disturbance
Interventions Sleep Hygiene Education Mind-Body Bridging Mindfulness Meditation
Duration Three sessions, once per week for three consecutive weeks; follow-up 1 week after the last session
Measures salivary alpha-amylase, salivary cortisol, sleep scale
Topics Meditation
Keywords Sympathetic nervous system Humans Neoplasms Dyssomnias Hydrocortisone Treatment outcome Psychophysiology Wakefulness Adolescent Middle aged Survivors Self-help groups Female Mind-body therapies Salivary alpha-amylases Young adult Biomarkers Stress Salivary cortisol Cancer survivor Sleep disturbance Salivary α-amylase Mind–body intervention
Key findings Waking salivary alpha-amylase levels declined in the Mind-Body Bridging group compared with Sleep Hygiene Education, while waking cortisol did not differ among groups but declined slightly with Sleep Hygiene Education. Self-reported sleep improved across all three interventions, with the largest improvements in Mind-Body Bridging. The authors suggest these findings indicate a possible positive influence of Mind-Body Bridging on sympathetic activity.

Abstract

Objective: The main aim of this exploratory study was to assess whether salivary α-amylase (sAA) and salivary cortisol levels would be positively modulated by sleep-focused mind-body interventions in female and male cancer survivors.

Methods: We conducted a randomized controlled trial in which 57 cancer survivors with self-reported sleep disturbance received either a Sleep Hygiene Education (SHE; n=18) control, or one of two experimental mind-body interventions, namely, Mind-Body Bridging (MBB; n=19) or Mindfulness Meditation (MM; n=20). Interventions were three sessions each conducted once per week for three consecutive weeks. Saliva cortisol and sAA were measured at baseline and 1 week after the last session. Participants also completed a sleep scale at the same time points when saliva was collected for biomarker measurement.

Results: Our study revealed that at post-intervention assessment, mean sAA levels upon awakening ("Waking" sample) declined in MBB compared with that of SHE. Mean Waking cortisol levels did not differ among treatment groups but declined slightly in SHE. Self-reported sleep improved across the three interventions at Post-assessment, with largest improvements in the MBB intervention.

Conclusion: In this exploratory study, sleep focused mind-body intervention (MBB) attenuated Waking sAA levels, suggesting positive influences of a mind-body intervention on sympathetic activity in cancer survivors with sleep disturbance.

Comparable studies

Other randomized controlled trials on meditation, most cited first.

Study Year Design Participants
Alterations in Brain and Immune Function Produced by Mindfulness Meditation Healthy employees in a work environment 2003 Randomized controlled trial n = 41
Prevention of relapse/recurrence in major depression by mindfulness-based cognitive therapy. Recovered recurrently depressed patients 2000 Randomized controlled trial n = 145
Open hearts build lives: Positive emotions, induced through loving-kindness meditation, build consequential personal resources. Working adults 2008 Randomized controlled trial n = 139
Short-term meditation training improves attention and self-regulation Undergraduate Chinese students 2007 Randomized controlled trial n = 40
Mindfulness-Based Cognitive Therapy for Depression: Replication and Exploration of Differential Relapse Prevention Effects. Recovered recurrently depressed patients 2004 Randomized controlled trial n = 73

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