A number of studies have documented an average of 47 percent greater weight gain in preterm neonates following massage therapy. Our currently funded study suggests that massage therapy increases vagal activity, oxytocin, and IGF-1. In the proposed continuation of this study preemies would be provided daily massages three times a day for 10 days, as in our previously successful protocol. To determine potential mechanisms that may underlie the massage therapy/weight gain relationship we will continue to assess vagal activity and assay insulin, oxytocin, IGF-1 and cortisol as well as gastric motility. We have added an alternative potential pathway for the massage therapy/weight gain relationship. In this expanded model, activity level and the related measures of heart rate, oxygen consumption (based on a formula calculated from heart rate) and temperature mediate the effects of massage therapy on weight gain. A larger sample will be recruited so that we can have the power needed to test our model of the potential mechanisms underlying the weight gain from preterm infant massage. For the current application, 120 preterm infants with common medical complications of prematurity, who are medically stable and residing in the intermediate care (""""""""grower"""""""") nursery, will be assigned to groups based on a random stratification on the following variables: gender, gestational age, birthweight, days in the NICU, and study entry weight. One hundred twenty infants will be randomly assigned to one of two groups: 1) ten days of massage therapy (n=60), or 2) standard treatment (n=60). Within-subjects and between-groups analyses will focus on physiological (heart rate, vagal tone, gastric motility, and temperature), biochemical (insulin, oxytocin, IGF-1 and cortisol) and behavioral variables (activity level).
The specific aims are: 1) to replicate the data that following ten days of massage therapy, preterm infants show greater daily weight gain and are discharged from the hospital earlier than the controls, thus demonstrating the cost-effectiveness of the intervention; 2) to test a model on two potential underlying mechanisms for weight gain including a) enhanced vagal activity leading to greater gastric motility, higher levels of insulin, IGF-1, and oxytocin and lower cortisol levels in the massage versus the control infants at the end of the study; and/or b) increased physical activity and its associated increase in heart rate oxygen consumption and temperature leading to greater weight gain. These pathways (vagal activity and physical activity) will be tested by path analyses. Determining underlying mechanisms for the massage therapy/weight gain relationship is a critical process required by the neonatology community for massage therapy to be adopted as a standard neonatal intensive care unit procedure.

Agency
National Institute of Health (NIH)
Institute
National Center for Complementary & Alternative Medicine (NCCAM)
Type
Research Project (R01)
Project #
2R01AT000370-04A2
Application #
6771640
Study Section
Special Emphasis Panel (ZRG1-PRDP (01))
Program Officer
Klein, Marguerite
Project Start
2000-04-15
Project End
2007-03-31
Budget Start
2004-04-15
Budget End
2005-03-31
Support Year
4
Fiscal Year
2004
Total Cost
$211,495
Indirect Cost
Name
University of Miami School of Medicine
Department
Pediatrics
Type
Schools of Medicine
DUNS #
052780918
City
Miami
State
FL
Country
United States
Zip Code
33146
Field, Tiffany (2014) Massage therapy research review. Complement Ther Clin Pract 20:224-9
Diego, Miguel A; Field, Tiffany; Hernandez-Reif, Maria (2014) Preterm infant weight gain is increased by massage therapy and exercise via different underlying mechanisms. Early Hum Dev 90:137-40
Hernandez-Reif, Maria; Maluga, Mark; Field, Tiffany (2012) Maternal depression and infant birth measures relate to how neonates respond to music. Infant Behav Dev 35:655-61
Field, Tiffany (2012) Prenatal exercise research. Infant Behav Dev 35:397-407
Field, Tiffany; Diego, Miguel; Hernandez-Reif, Maria et al. (2012) Yoga and massage therapy reduce prenatal depression and prematurity. J Bodyw Mov Ther 16:204-9
Field, Tiffany (2012) Exercise research on children and adolescents. Complement Ther Clin Pract 18:54-9
Field, Tiffany; Diego, Miguel; Hernandez-Reif, Maria (2011) Potential underlying mechanisms for greater weight gain in massaged preterm infants. Infant Behav Dev 34:383-9
Field, Tiffany (2011) Prenatal depression effects on early development: a review. Infant Behav Dev 34:1-14
Field, Tiffany (2011) Tai Chi research review. Complement Ther Clin Pract 17:141-6
Field, Tiffany (2011) Yoga clinical research review. Complement Ther Clin Pract 17:1-8

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