Utjecaj prehrane i tjelesne aktivnosti na mineralnu gustoću skeleta u studentica

master's thesis

• Title (english): Influence of diet and physical activity on bone mineral density among female students
• Author: Melinda Šabani
• Mentor: Selma Cvijetić-Avdagić (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Quality Control); (Laboratory for Nutrition Science); Zagreb
• Defense date and country: 2012-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Prehrana i tjelesna aktivnost važni su okolišni čimbenici na zdravlje kostiju. Provedena je sekundarna analiza podataka studije o vršnoj koštanoj masi u studentica zagrebačkog sveučilišta uz dodatnu analizu u koju je uključen unos vitamina D hranom i laboratorijski nalazi kalcija i natrija u urinu. Studentice su bile u dobi do 18 do 25 godina, kada se pretpostavljalo da su u najvećem dijelu skeleta dosegnule vršnu koštanu masu. Cilj dodatnih analiza je bio utvrditi razlike u unosu vitamina D, kao i u izlučivanju kalcija i natrija u studentica s visokom tjelesnom aktivnosti u odnosu na studentice s manjom tjelesnom aktivnosti. Analizirana je i povezanost unosa vitamina D, kao i drugih prehrambenih sastojaka te kalcija i natrija u urinu s koštanom gustoćom u te dvije grupe ispitanica. Nije bilo značajne razlike u unosu kalcija i vitamina D između dvije grupe studentica. Tjelesno aktivnije studentice su imale veći unos kalija i značajno veću vrijednost natrija u urinu. Pronađena je pozitivna korelacija između natrija i kalcija u urinu. Studentice koje su bile tjelesno aktivnije imale su veću koštanu gustoću u odnosu na manje tjelesno aktivne studentice, iako su bile značajno mlađe. Naši rezultati upućuju da je tjelesna aktivnost značajniji faktor za formiranje vršne koštane gustoće nego prehrambeni unos kalcija i vitamina D.

Abstract (english)

Diet and physical activity are important environmental factors for bone health. We conducted a secondary statistical analysis of study data on female students at the University of Zagreb, with additional analysis. Students were aged 18 to 25 years, when it was assumed that peak bone mass in most parts of the skeleton was achieved. Additional analysis included vitamin D dietary intake, laboratory calcium and sodium in the urine. The aim was to identify differences in intake of vitamin D, as well as the excretion of calcium and sodium in students with high physical activity compared to students with lower physical activity.We also analyzed the association of vitamin D intake and other dietary constituents, calcium and sodium in the urine with bone density in these two groups of subjects. There were no significant differences in calcium and vitamin D dietary intake between the two student groups. Significantly greater value of sodium in the urine was found among physically more active students, with higher potassium intake. We also found positive correlation between sodium and calcium in the urine. Students with higher physical activity had higher bone mineral density compared to students with lower physical activity, although they were significantly younger. Our results suggest that physical activity is more significant predictor of bone density than calcium and vitamin D dietary intake.

• Keywords: mineralna gustoća kosti; tjelesna aktivnost; prehrana; vitamin D; studentice
• Keywords (english): bone mineral density; physical activity; diet; vitamin D; female students
• Language: croatian
• URN:NBN: urn:nbn:hr:159:014137
• Study programme: Title: Nutrition; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra nutricionizma (magistar/magistra nutricionizma)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-05-09 09:17:00