Section of Sport Science, Department of Public Health, Aarhus University, , Aarhus, Denmark.
Br J Sports Med. 2014 Mar;48(6):440-7. doi: 10.1136/bjsports-2013-092202. Epub 2013 Jun 13.
To investigate if running distance to first running-related injury varies between foot postures in novice runners wearing neutral shoes.
A 1-year epidemiological observational prospective cohort study.
Denmark.
A total of 927 novice runners equivalent to 1854 feet were included. At baseline, foot posture on each foot was evaluated using the foot-posture index and categorised into highly supinated (n=53), supinated (n=369), neutral (n=1292), pronated (n=122) or highly pronated (n=18). Participants then had to start running in a neutral running shoe and to use global positioning system watch to quantify the running distance in every training session.
A running-related injury was defined as any musculoskeletal complaint of the lower extremity or back caused by running, which restricted the amount of running for at least 1 week.
During 1 year of follow-up, the 1854 feet included in the analyses ran a total of 326 803 km until injury or censoring. A total of 252 participants sustained a running-related injury. Of these, 63 were bilateral injuries. Compared with a neutral foot posture, no significant body mass index-adjusted cumulative risk differences (RD) were found after 250 km of running for highly supinated feet (RD=11.0% (-10% to 32.1%), p=0.30), supinated feet (RD=-1.4% (-8.4% to 5.5%), p=0.69), pronated feet (RD=-8.1% (-17.6% to 1.3%), p=0.09) and highly pronated feet (RD=9.8% (-19.3% to 38.8%), p=0.51). In addition, the incidence-rate difference/1000 km of running, revealed that pronators had a significantly lower number of injuries/1000 km of running of -0.37 (-0.03 to -0.70), p=0.03 than neutrals.
The results of the present study contradict the widespread belief that moderate foot pronation is associated with an increased risk of injury among novice runners taking up running in a neutral running shoe. More work is needed to ascertain if highly pronated feet face a higher risk of injury than neutral feet.
探究在穿着中性跑鞋的新手跑者中，不同足姿与首次跑步相关损伤间的跑步距离是否存在差异。
为期 1 年的前瞻性队列研究。
丹麦。
共纳入 927 名新手跑者，相当于 1854 只脚。在基线时，使用足姿指数评估每只脚的足姿，并将其分为严重过度旋前（53 只脚）、旋前（369 只脚）、中立（1292 只脚）、旋后（122 只脚）或严重旋后（18 只脚）。随后，参与者必须穿着中性跑鞋开始跑步，并使用全球定位系统手表来量化每次训练的跑步距离。
跑步相关损伤定义为任何由跑步引起的下肢或背部的肌肉骨骼疾病，使跑步量至少减少 1 周。
在 1 年的随访期间，分析中共纳入了 1854 只脚，它们在受伤或截止前总共跑了 326803 公里。共有 252 名参与者发生了跑步相关损伤。其中，63 人为双侧损伤。与中立足姿相比，在跑步 250 公里后，严重过度旋前（风险差异 11.0%（-10%32.1%），p=0.30）、旋前（风险差异-1.4%（-8.4%5.5%），p=0.69）、旋后（风险差异-8.1%（-17.6%1.3%），p=0.09）和严重旋后足（风险差异 9.8%（-19.3%38.8%），p=0.51）足姿的校正后体质量指数累积风险差异无显著差异。此外，每 1000 公里跑步的发病率差异显示，旋前者每 1000 公里跑步的损伤发生率明显较低，为-0.37（-0.03~-0.70），p=0.03，低于中立者。
本研究结果与广泛的观点相悖，即中度足旋前与穿着中性跑鞋开始跑步的新手跑者受伤风险增加有关。需要进一步研究以确定高度旋前足是否比中立足面临更高的受伤风险。
