title: Effect of progressive muscle relaxation in adolescent female bronchial asthma patients: a randomized, double-blind, controlled study.
abstract: OBJECTIVE
  The aim of this study is to examine the efficacy of progressive muscle relaxation (PMR) on change in blood pressure, lung parameters and heart rate in female adolescent asthmatics.
  
  
  METHODS
  In a prospective, randomized, double-blind, controlled study, adolescent female asthmatics (n=31) were tested to find out how the systolic blood pressure (SBP), forced expiratory volume in the first second (FEV(1)), peak expiratory flow (PEF) and heart rate change after PMR. The control group (CG; n=30) received a placebo intervention.
  
  
  RESULTS
  A significant reduction in SBP and a significant increase in the FEV(1) and PEF were observed after PMR. The heart rate showed a significant increase in the coefficient of variation (CV), root-mean-square of successive differences (RMSSD) and at the high frequency (HF) range, in addition to a significant reduction at the low and middle frequency (LF and MF, respectively) ranges.
  
  
  CONCLUSIONS
  PMR appears to be effective in improvement of blood pressure, lung parameter and heart rate in adolescent female asthmatics.
authors.affiliation: Clinic of Psychosomatic Medicine and Psychotherapy, Inntalklinik, Simbach am Inn, Germany.
authors.forename: Cerstin
authors.initials: C
authors.lastname: Nickel
authors.forename: Christian
authors.initials: C
authors.lastname: Kettler
authors.forename: Moritz
authors.initials: M
authors.lastname: Muehlbacher
authors.forename: Claas
authors.initials: C
authors.lastname: Lahmann
authors.forename: Karin
authors.initials: K
authors.lastname: Tritt
authors.forename: Rainhold
authors.initials: R
authors.lastname: Fartacek
authors.forename: Egon
authors.initials: E
authors.lastname: Bachler
authors.forename: Nadine
authors.initials: N
authors.lastname: Rother
authors.forename: Christoph
authors.initials: C
authors.lastname: Egger
authors.forename: Wolfhardt K
authors.initials: WK
authors.lastname: Rother
authors.forename: Thomas H
authors.initials: TH
authors.lastname: Loew
authors.forename: Marius K
authors.initials: MK
authors.lastname: Nickel
mesh_terms: D000293:Adolescent; D001249:Asthma / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D004311:Double-Blind Method; D005260:Female; D005541:Forced Expiratory Volume; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008954:Models, Biological; D009126:Muscle Relaxation; D010366:Peak Expiratory Flow Rate; D011446:Prospective Studies; D012720:Severity of Illness Index; D016896:Treatment Outcome