[1] Georgia Regents Univ, Resp Care, Augusta, GA USA
[2] Georgia Regents Univ, Georgia Prevent Inst, Augusta, GA USA
[3] Georgia Regents Univ, Pediat Pulmonol, Augusta, GA USA
[4] Georgia Regents Univ, Pulm & Crit Care Med, Augusta, GA USA
[5] Univ Ulster, Sport & Exercise Res Inst, Jordanstown, North Ireland