title: [Relationships between finding of calcaneal quantitative ultrasound and lifestyle in Japanese college students].
abstract: OBJECTIVE
  The actual situation regarding the lifestyle of college students in Japan cannot be said to be healthy and future reduction of bone mass is a possible matter for concern. However, there have been only a few reports about the relationship between lifestyle during this period and bone mass, and especially none focusing on males not affected by female hormones. The purpose of this study was thus to investigate the relationship between bone mass and lifestyle in college students of both sexes.
  
  
  METHODS
  Seven hundred and sixty-six college students of both genders were enrolled in this study as subjects and underwent calcaneal quantitative ultrasound with an AOS-100 device (ALOKA). At the same time physical factors, lifestyle and nutrition were also examined with laboratory findings.
  
  
  RESULTS
  Physical factors such as stature, weight, body mass index (BMI), percentage body fat and gripping power were more strongly related to calcaneal quantitative ultrasound among females than in male students. Multiple regression analysis using calcaneal Osteo Sono-Assessment Index (OSI) as the dependent variable, and physical factors, lifestyle and nutrition, and laboratory findings as the independent variables, indicated that regular physical activity was strongly related to OSI in both sexes. The OSI in the alcohol-consuming group was significantly higher than that in the non alcohol-consuming group in males, and demonstrated a significant negative correlation with liver function markers, i.e. ALT (GPT) IU/l.
  
  
  CONCLUSIONS
  It is very necessary to undertake daily physical activity for primary prevention of osteoporosis in both males and females. Bone mass in the alcohol-consuming group was here found to be significantly higher than that in the non alcohol-consuming group, but the study suggested that if the amount of alcohol consumed reaches an extent where liver function markers are affected, bone mass may decrease.
authors.affiliation: Department of Public Health, Nihon University of Medicine.
authors.forename: Eiji
authors.initials: E
authors.lastname: Ibuka
authors.forename: Takashi
authors.initials: T
authors.lastname: Ohida
authors.forename: Takeo
authors.initials: T
authors.lastname: Miyake
authors.forename: Kenshuu
authors.initials: K
authors.lastname: Suzuki
authors.forename: Sayaka
authors.initials: S
authors.lastname: Motojima
authors.forename: Satoru
authors.initials: S
authors.lastname: Harano
authors.forename: Eise
authors.initials: E
authors.lastname: Yokoyama
authors.forename: Yositaka
authors.initials: Y
authors.lastname: Kaneita
authors.forename: Akiyo
authors.initials: A
authors.lastname: Kaneko
authors.forename: Fumi
authors.initials: F
authors.lastname: Takeda
mesh_terms: D000328:Adult; D015519:Bone Density; D002111:Calcaneus / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007564:Japan; D008019:Life Style; D008297:Male; D013334:Students; D014463:Ultrasonography