Wilson Kipsang is from the Kalenjin tribe in Kenya. Harry Aikines-Aryeetey is Ghanaian. Height Ghanaian 174-178cm Kalenjin 170-174cm Weight Ghanaian 75-80kg Kalenjin 50-60kg Bone density Ghanaian 1.3-1.5 g/cm² (highest in world) Kalenjin 1.0-1.2 g/cm² Ankle circumference Ghanaian 23 cm - 25 cm Kalenjin 20 cm - 21 cm Calf circumference Ghanaian 38 cm - 42 cm (Low-set) Kalenjin small 32 cm - 34 cm (High-set) Muscle fiber type Ghanaian 60% - 75% Type II 25% - 40% Type I Kalenjin 20% - 30% Type II 70% - 80% Type I Achilles tendon length Ghanaian 15 cm - 18 cm Kalenjin 22 cm - 26 cm ...