However , all these outdoor experiments were uncontrollably influenced by the wind conditions .
Also , de Boer , Ettema , et al. ( 1987 , 1988 ) measured changes in speed ( both accelerations and decelerations ) in the curve for 5,000 - m races .
All these outdoor experiments were uncontrollably influenced by the wind conditions .
Also , de Boer , Ettema , et al. ( 1987 , 1988 ) measured changes in speed ( both accelerations and decelerations ) in the curve for 5,000 - m races .