Article ID Journal Published Year Pages File Type
100136 HOMO - Journal of Comparative Human Biology 2014 7 Pages PDF
Abstract

The goal of the study was to examine secular changes of pelvic size in parturient women over the 25-year period from 1985 to 2009. Data were collected from randomly selected patients’ medical records of 2414 parturient women from four time periods (1985–1986, 1992–1994, 2000–2002, and 2007–2009). Three different pelvic measurements were collected: distantia spinarum, distantia cristarum, and distantia trochanterica. Regression analyses were conducted in order to test predictors of pelvic dimensions. The multivariate analysis of covariance (MANCOVA) was used to test changes in pelvic dimensions over time, with body mass index (BMI) as a covariate.The average size of distantia spinarum, distantia cristarum, and distantia trochanterica was 249.3 mm (SD = 13.7), 277.9 mm (SD = 15.6), and 318.3 mm (SD = 19.6), respectively. Pelvic dimensions were all positively related to woman's height and pre-pregnancy weight. After controlling for the BMI, there were significant changes in pelvic dimensions over the 25-year period and it was shown that distantia spinarum, cristarum, and trochanterica all increased (F [3,2408] = 16.4, p < 0.01), especially from the 1992–1994 period to the present.To conclude, parallel with secular changes of weight and height in parturient women, changes in bones are also evident. The size of pelvis in parturient women had significantly enlarged over the 25-year period.

SažetakCilj ovog istraživanja bio je ispitati sekularne promjene zdjelice kod rodilja tijekom 25-godišnjem razdoblju, od 1989. do 2009. Podaci su prikupljeni iz slučajno odabranih povijesti bolesti 2414 žene koje su rodile u četiri intervala (1985.-1986., 1992.-1994., 2000.-2002., i 2007.-2009.). Tri različite mjere zdjelice su uzete u obzir: distantia spinarum, distantia cristarum i distantia trochanterica. Regresijske analize su napravljene kako bi se ispitali prediktori veličine zdjelice. Multivarijatnom analizom kovarijance (MANCOVA) testirane su razlike u veličini zdjelice u četiri ispitivana intervala, pri čemu je indeks tjelesne mase korišten kao kovarijata.Utvrđene su prosječne vrijednosti mjera zdelica pri čemu distantia spinarum, distantia cristarum i distantia trochanterica iznose 249.3 mm (SD = 13.7), 277.9 mm (SD = 15.6), i 318.3 mm (SD = 19.6). Sve mjere zdjelice su u pozitivnoj korelaciji s ženinom visinom i masom prije trudnoće. Nakon što se kontrolira indeks tjelesne mase, utvrđeno je da postoje značajne promjene u veličini zdjelice tijekom 25-godišnjeg razdoblja te da su se distantia spinarum, cristarum i trochanterica sve povećale (F (3, 2408) = 16.4, p < 0.01), posebno od razdoblja 1992.-1994. nadalje.Zaključno, u skladu sa sekularnim promjenama u masi i visini, promjene u koštanim strukturama su također prisutne. Veličina zdjelice kod rodilja se značajno povećala tijekom 25-godišnjeg razdoblja.

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