Comparison of select characteristics of those reporting an exercise-related stress fracture in the prior 12 months with those who had not suffered as stress fracture.

Data are reported as mean ± SD except for group percentages.
a Running experience was based upon the year the subject started running at least 3 days per week.
b Ultramarathon running experience was based upon year first ultramarathon was run.
c High intensity was defined as "will break a sweat after 3–5 minutes; breathing is deep and rapid; can only talk in short phrases."
d An affirmative response meant the subject had regularly performed resistance training for at least a continuous 3-month period of time.

除分组百分比外，所有数据均以平均值±标准差（Standard Deviation，SD）表示。
a 跑步运动经验以受试者每周至少进行3天跑步的起始年份为统计依据。
b 超级马拉松（Ultramarathon）跑步经验以受试者首次完成超级马拉松的年份为准。
c 高强度运动定义为：「运动3~5分钟后出汗；呼吸深且急促；仅能说出简短语句」。
d 若受试者给出肯定应答，则代表其已持续规律开展抗阻训练至少3个月。