This article was presented at the 2008 AAPA meeting in a symposium in honor of A. Roberto Frisancho, on the occasion of his retirement from the Department of Anthropology of the University of Michigan.
Original Research Article
Nutritional, developmental, and genetic influences on relative sitting height at high altitude†
Version of Record online: 25 MAR 2009
Copyright © 2009 Wiley-Liss, Inc.
American Journal of Human Biology
Special Issue: Special Section: Symposium in Honor of A. Roberto Frisancho
Volume 21, Issue 5, pages 606–613, September/October 2009
How to Cite
Stinson, S. (2009), Nutritional, developmental, and genetic influences on relative sitting height at high altitude. Am. J. Hum. Biol., 21: 606–613. doi: 10.1002/ajhb.20918
- Issue online: 3 AUG 2009
- Version of Record online: 25 MAR 2009
- Manuscript Accepted: 7 FEB 2009
- Manuscript Revised: 5 FEB 2009
- Manuscript Received: 28 OCT 2008
- City University of New York PSC-CUNY Research Award Program. Grant Number: 13457
- University of Michigan (Pre-Doctoral Fellowship, Rackham Dissertation Grant)
The study explores how nutritional status, developmental exposure to high-altitude hypoxia, and genetic ancestry influence relative sitting height in two groups of high-altitude Bolivian children aged 8 through 13 years of age: 253 rural Aymara children of very low socioeconomic status and 273 children of upper socioeconomic status from the capital city of La Paz. The rural Aymara children on average have longer trunks relative to stature, but there is also overlap in body proportions between the two groups of children. The 20% of each sample in the region of overlap was examined to investigate influences on relative sitting height. Nutritional effects on relative sitting height are suggested by the finding that Aymara children with relatively long legs are taller, heavier, and fatter than other Aymara children. Developmental and genetic influences on relative sitting height are suggested by the finding that high relative sitting heights in elite urban children are associated with a greater percentage of time lived at high altitude and with parents born in Bolivia. Separating developmental and ancestry effects is difficult because the two are closely interconnected in the urban children. The results of this study suggest that influences on growth in relative trunk and leg length are similar to those that affect other aspects of growth in Andean populations. They also highlight the fact that because relative sitting height gradually decreases prior to adolescence and then increases, the interpretation of variation in body proportions in children is not always straightforward. Am. J. Hum. Biol. 2009. © 2009 Wiley-Liss, Inc.