title: [The deacclimatization symptom scores of 159 youth returning to the same plain from different plateau].
abstract: OBJECTIVE
  To analysis deacclimatization symptom scores of 159 youth from Karakoram and Tibet Ali area, and provide the basis for the development of relevant prevention and control measures.
  
  
  METHODS
  Using the method of epidemiological symptoms questionnaire, 18 symptoms of 190 youth who returned to the plain area from the different plateau were investigated. The symptom scores of different altitude, age, the time of staying, different units, continuous or intermittent stage and education were surveyed.
  
  
  RESULTS
  Deacclimatization symptom scores among 5,000 meter groups were significantly higher than those of 4,300 meter and 3,700 meter group (P < 0.05, P < 0.01). There was no significant difference between the 4,300 meter group and the 3,700 meter group (P > 0.05). There were significant differences among the stayed personnel (different age, position, unit, education, time, continuous or intermittent) (P < 0.01). There was significant difference between the continuous defended the group and intermittent group (P < 0.01).
  
  
  CONCLUSIONS
  Deacclimatization symptom scores were related to the plateau exposure time, altitude, workload, plateau continued exposure. The older, the longer exposure, the higher altitude, the greater workload at plateau were showed higher deacclimatization symptom score.
authors.forename: Yin-Hu
authors.initials: YH
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Sheng-Hong
authors.initials: SH
authors.lastname: Yang
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.forename: Qi-Quan
authors.initials: QQ
authors.lastname: Zhou
mesh_terms: D000064:Acclimatization; D000531:Altitude; D000532:Altitude Sickness / Q000503:physiopathology*; D006801:Humans; D011795:Surveys and Questionnaires; D018609:Tibet