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In order to reveal the conditions and determinants of stress fractures(SF) in recruits of our army,and to provide basic data for intervention, a two-year prospective study was carried out and it showed thatthe incidence of SF in the recruits of an elite infantry division was 34%or 12 person-time/100 person-month。Infantry had the highest incidence (39.2%), second was artillary(23.5%)and service troops were the least(12.7%). The incidence in different subunits was directly proportional to actural training intensity.... In order to reveal the conditions and determinants of stress fractures(SF) in recruits of our army,and to provide basic data for intervention, a two-year prospective study was carried out and it showed thatthe incidence of SF in the recruits of an elite infantry division was 34%or 12 person-time/100 person-month。Infantry had the highest incidence (39.2%), second was artillary(23.5%)and service troops were the least(12.7%). The incidence in different subunits was directly proportional to actural training intensity. The dif-ference in time distribution between vears of 1992 and 1993 was due to the variation of training scheduals。 SFwas commonly found in bones of pelvic limbs, among which the tibia was the most affected(70.9%)。 为查明我军新兵应力性骨折(SF)的发生情况,并为致伤因素和干预措施研究提供基础,作者通过两个年度的前瞻性研究,得出我军某甲种步兵师新兵基础训练期间SF的发生率为34%或12人次/(100人·月).步兵分队的发生率最高(39.2%),炮兵分队(23.5%)又高于勤务分队(12.7%).SF单位分布状况与各单位的实际训练强度成正比;两年度SF时间分布特征不同,因训练计划的变动而变化。SF可见于下肢各骨,以胫骨最常见(70.9%)。 The pathological sections of the femora of 288 New Zealand rabbits arranged into guoupsand the result of torsion test showed that the dominant role of high intensity of "training"is to quickenbone stress reconstruction and intensify the ability to. resist fracture. The pathological sectiont exanina-tion of the upper parts of tibiae of 180 big rats which were seperated into therr groups and recived threekind of "training" as well as the observation under electron microscope showed a higher rate of accomplished... The pathological sections of the femora of 288 New Zealand rabbits arranged into guoupsand the result of torsion test showed that the dominant role of high intensity of "training"is to quickenbone stress reconstruction and intensify the ability to. resist fracture. The pathological sectiont exanina-tion of the upper parts of tibiae of 180 big rats which were seperated into therr groups and recived threekind of "training" as well as the observation under electron microscope showed a higher rate of accomplished reconstruction (14. 6% ) in the group of "intensdied cyclic training"than that in the other twogroups (which are 26. 1% and 21. 9% respectively) (P<0. 05). Beside, the group of "intensified cyclictraining" had a lower rate of stress fracture (11. 5%) than the other two groups (22. 9%) and 18. 8/00 re-spectively3 (P<0. 05).The authors also made sone prospective epidemiologic investigations among 1129recruits during the twelve weeks of basic militry training, and the results showed that the long tubiformbones of the lower limbs of the recruits experienced a period of stress remodeling reconstruction extendingabout eight weeks. The two peeks of stress fracture occurrence appeared in the second and the seventhweek and the occurrence of peaks may be advanced or delayed with the change of training intensity and du-ration. "Intensified cyclic training method" should adopted so as to decrease the rate of stress fracture occurrence in basic military trainig. 分组模拟训练的288只兔股骨标本病理观察及扭断试验结果表明,较大强度和时限训练的主导作用是加速骨塑形改建,增强抗骨折能力。分3组经3种方法训练的180只大鼠的胚骨上段病理切片及电镜观察表明,强化循环训练组的改建完成率(41.7%)高于其它两组(26.1%,21.9%),而应力性骨折发生率(11.5%)则低于其它两组(22.9%,18.8%)。对1129名新兵12周基础训练的前瞻性流行病学调查证实,下肢长管状骨经历约9周的应力性塑形改建期,训练的第2、7周出现的应力性骨折高发的双峰现象可随训练强度与时限的加大或减少,而提前或延迟出现。在训练中采用“强化循环训练法”将加速骨的塑形改建及降低应力性骨折发生率。 n epidemiological study of stress fracture(SF) during basic training of an army of 采用前瞻性主动临床筛检与核素骨扫描结合确诊应力骨折(StressfractureSF)病例,对某部队1993年度新兵基础训练期间发生的SF进行了流行病学调查。经与1992年同样方法收集的数据进行对比分析发现,1993年SF发生率较1992下降了37.61%。1992年底部队领导曾作出1993年开训第1个月严格控制训练强度的“四不准”的规定。本文通过对1992、1993年基础训练的类同性分析;1992、1993年SF发生率,训练初4周和后4周SF发生率的对比分析,讨论了1993年SF发生率下降归因于“四不准”规定的问题。“四不准”干预未设同期对照,但可认为是一项“类实验”。
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