Sources

Adewole, I., Franklin, O., & Matiluko, A. (1993). Cervical ripening and induction of labour by breast stimulation. African Journal of Medicine And Medical Sciences, 22(4), 81–85.

Bell, R. J., Palma, S. M., & Lumley, J. M. (1995). The effect of vigorous exercise during pregnancy on birth-weight. Australian and New Zealand Journal of Obstetrics and Gynaecology, 35(1), 46–51. doi:10.1111/j.1479-828X.1995.tb01829.x

Bungum, T. J., Peaslee, D. L., Jackson, A. W., & Perez, M. A. (2000). Exercise during pregnancy and type of delivery in nulliparae. Journal of Obstetric, Gynecologic, & Neonatal Nursing, 29(3), 258–264. doi:10.1111/j.1552-6909.2000.tb02047.x

Campbell, M. K., & Mottola, M. F. (2001). Recreational exercise and occupational activity during pregnancy and birth weight: A case-control study. American Journal of Obstetrics and Gynecology, 184(3), 403–408.

Centers for Disease Control and Prevention. (2013, July). Breastfeeding report card –– United States, 2013. Atlanta, GA: National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention. Retrieved from http://www.cdc.gov/breastfeeding/pdf/2013breastfeedingreportcard.pdf

Chaudhry, Z., Fischer, J., & Schaffir, J. (2011). Women’s use of nonprescribed methods to induce labor: A brief report. Birth, 38(2), 168–171. doi:10.1111/j.1523-536X.2010.00465.x

Ellison, P. T. (2001). On fertile ground: A natural history of human reproduction. Cambridge, MA: Harvard University Press.

Hatch, M., Levin, B., Shu, X. O., & Susser, M. (1998). Maternal leisure-time exercise and timely delivery. American Journal of Public Health, 88(10), 1528–1533. doi:10.2105/AJPH.88.10.1528

Hegaard, H. K., Hedegaard, M., Damm, P., Ottesen, B., Petersson, K., & Henriksen, T. B. (2008). Leisure time physical activity is associated with a reduced risk of preterm delivery. American Journal of Obstetrics & Gynecology, 198(2), 180.e181–180.e185. doi:10.1016/j.ajog.2007.08.038

Jukic, A. M. Z., Evenson, K. R., Daniels, J. L., Herring, A. H., Wilcox, A. J., & Hartmann, K. E. (2012). A prospective study of the association between vigorous physical activity during pregnancy and length of gestation and birthweight. Maternal and Child Health Journal, 16(5), 1031–1044. doi:10.1007/s10995-011-0831-8

Kasapis, C., & Thompson, P. D. (2005). The effects of physical activity on serum C-reactive protein and inflammatory markers: A systematic review. Journal of the American College of Cardiology, 45(10), 1563–1569. doi:10.1016/j.jacc.2004.12.077

Klebanoff, M. A., Shiono, P. H., & Carey, J. C. (1990). The effect of physical activity during pregnancy on preterm delivery and birth weight. American Journal of Obstetrics & Gynecology, 163(5), 1450–1456. doi:10.1016/0002-9378(90)90604-6

Knoche, A., Selzer, C., & Smolley, K. (2008). Methods of stimulating the onset of labor: An exploration of maternal satisfaction. Journal of Midwifery & Women's Health, 53(4), 381–387. doi:10.1016/j.jmwh.2008.01.004

Leiferman, J. A., & Evenson, K. R. (2003). The effect of regular leisure physical activity on birth outcomes. Maternal and Child Health Journal, 7(1), 59–64. doi:10.1023/A:1022545718786

Lenton, E. A., Landgren, B.-M., Sexton, L., & Harper, R. (1984). Normal variation in the length of the follicular phase of the menstrual cycle: Effect of chronological age. BJOG: An International Journal of Obstetrics & Gynaecology, 91(7), 681–684. doi:10.1111/j.1471-0528.1984.tb04830.x

Misra, D. P., Strobino, D. M., Stashinko, E. E., Nagey, D. A., & Nanda, J. (1998). Effects of physical activity on preterm birth. American Journal of Epidemiology, 147(7), 628–635. doi:10.1093/oxfordjournals.aje.a009503

Mittendorf, R., Williams, M. A., Berkey, C. S., Lieberman, E., & Monson, R. R. (1993). Predictors of human gestational length. American Journal of Obstetrics & Gynecology, 168(2), 480–484. doi:10.1016/0002-9378(93)90476-Y

Tan, P. C., Andi, A., Azmi, N., & Noraihan, M. N. (2006). Effect of coitus at term on length of gestation, induction of labor, and mode of delivery. Obstetrics & Gynecology, 108(1), 134–140. doi:10.1097/01.AOG.0000223229.83920.af Tan, P. C., Yow, C. M., & Omar, S. Z. (2009). Coitus and orgasm at term: Effect on spontaneous labour and pregnancy outcome. Singapore Medical Journal, 50(11), 1062–1067.

UNICEF. (2013). Improving child nutrition: The achievable imperative for global progress. New York, NY: United Nations Children’s Fund.

Wildman, D. E., Uddin, M., Romero, R., Gonzalez, J. M., Than, N. G., Murphy, J., . . . Fritz, J. (2011). Spontaneous abortion and preterm labor and delivery in nonhuman primates: Evidence from a captive colony of chimpanzees (Pan troglodytes). PLoS ONE, 6(9), e24509. doi:10.1371/journal.pone.0024509