[5] Tam, E., et al., Energetics of Running in Top-Level Marathon Runners from Kenya, European Journal of Applied Physiology 112 (2012): 3797–806.

[6] Saltin, B., et al., Aerobic Exercise Capacity at Sea Level and at Altitude in Kenyan Boys, Junior and Senior Runners Compared with Scandinavian Runners, Scandinavian Journal of Medicine and Science in Sports 5: 209–21.

[7] Fudge, B. W., et al., Energy Balance and Body Composition of Elite Endurance Runners: A Hunter-Gatherer Phenotype, in East African Running Toward a Cross-Disciplinary Perspective, ed. Y. Pitsiladis, J. Bale, C. Sharp, and T. Noakes (New York: Routledge, 2007).

[8] Finn, A. Running with the Kenyans (New York: Ballantine, 2012): 258.

[9] Bascomb, 52.

[10] Bascomb, 72.

[11] Bascomb, 144.

[12] Reynolds, 109.

[13] Hutchinson, 235.

[14] Hutchinson, 81.

[15] Hutchinson, 100.

[16]Hutchinson, 100.

[17] Reynolds, 144.

[18] Hutchinson, 106.

[19] Reynolds, 132.

[20] Hutchinson, 140.

[21] Reynolds, 10.

[22] Hutchinson, 123.

[23] Hutchinson, 125.

[24] Reynolds, 39.