PDF(Pubmed)
Abstract：
UNASSIGNED: The lumbar multifidus (LMF), as a dynamic stabilizer of the lumbar spine, may play an important role in the prevention of overuse-related back complaints.
UNASSIGNED: LMF morphology is associated with trunk stability and differs between symptomatic and asymptomatic skiers.
UNASSIGNED: Cohort study.
UNASSIGNED: Level 3.
UNASSIGNED: A total of 85 youth skiers (28 females, mean age, 14.7 ± 0.7 years; 57 males, mean age, 14.9 ± 0.5 years) underwent anthropometric assessments, an estimation of biological maturation, a magnetic resonance imaging- and ultrasound-based examination of LMF morphology, and a biomechanical quantification of deadbug bridging stabilization performance. Athletes were categorized as symptomatic if they had registered at least 1 significant overuse-related back complaint episode in the 12 months before the main examination.
UNASSIGNED: Male skiers showed a greater LMF size (ie, anatomical cross-sectional area [ACSA]) than female skiers, except for vertebral body L5, where no difference was found (8.8 ± 1.8 cm2 vs 8.3 ± 1.4 cm2, P = 0.18). Conversely, female skiers displayed longer fascicles than male skiers (5.8 ± 0.8 cm vs 5.4 ± 0.8 cm, P = 0.03). Skiers aged under 16 years (U16) skiers had greater values for LMF size and fascicle length than U15 skiers. Maturity offset was associated with L5 LMF size (R2 = 0.060, P = 0.01), fascicle length (R2 = 0.038, P = 0.04), and muscle thickness (R2 = 0.064, P = 0.02). L5 LMF size was associated with trunk stability (R2 = 0.068, P = 0.01). Asymptomatic skiers showed on average a 12.8% greater value for L5 LMF size compared with symptomatic skiers (P = 0.04).
UNASSIGNED: There are sex- and age-related differences in LMF morphology in youth competitive alpine skiers. Moreover, the ACSA at the level of the lumbar vertebral body L5 undergoes changes during biological maturation, shows a small, but significant association with trunk stability, and differs between symptomatic and asymptomatic skiers with back complaints.
UNASSIGNED: The observed association of muscle structure (ie, L5 LMF ACSA) with functional aspects (ie, trunk stabilization capacity) and clinical representation (ie, overuse-related back complaints) further highlights the important role of the multifidus muscle for training and injury prevention in youth competitive alpine skiers around the growth spurt.
UNASSIGNED: LMF morphology is associated with trunk stability and differs between symptomatic and asymptomatic skiers.
UNASSIGNED: Cohort study.
UNASSIGNED: Level 3.
UNASSIGNED: A total of 85 youth skiers (28 females, mean age, 14.7 ± 0.7 years; 57 males, mean age, 14.9 ± 0.5 years) underwent anthropometric assessments, an estimation of biological maturation, a magnetic resonance imaging- and ultrasound-based examination of LMF morphology, and a biomechanical quantification of deadbug bridging stabilization performance. Athletes were categorized as symptomatic if they had registered at least 1 significant overuse-related back complaint episode in the 12 months before the main examination.
UNASSIGNED: Male skiers showed a greater LMF size (ie, anatomical cross-sectional area [ACSA]) than female skiers, except for vertebral body L5, where no difference was found (8.8 ± 1.8 cm2 vs 8.3 ± 1.4 cm2, P = 0.18). Conversely, female skiers displayed longer fascicles than male skiers (5.8 ± 0.8 cm vs 5.4 ± 0.8 cm, P = 0.03). Skiers aged under 16 years (U16) skiers had greater values for LMF size and fascicle length than U15 skiers. Maturity offset was associated with L5 LMF size (R2 = 0.060, P = 0.01), fascicle length (R2 = 0.038, P = 0.04), and muscle thickness (R2 = 0.064, P = 0.02). L5 LMF size was associated with trunk stability (R2 = 0.068, P = 0.01). Asymptomatic skiers showed on average a 12.8% greater value for L5 LMF size compared with symptomatic skiers (P = 0.04).
UNASSIGNED: There are sex- and age-related differences in LMF morphology in youth competitive alpine skiers. Moreover, the ACSA at the level of the lumbar vertebral body L5 undergoes changes during biological maturation, shows a small, but significant association with trunk stability, and differs between symptomatic and asymptomatic skiers with back complaints.
UNASSIGNED: The observed association of muscle structure (ie, L5 LMF ACSA) with functional aspects (ie, trunk stabilization capacity) and clinical representation (ie, overuse-related back complaints) further highlights the important role of the multifidus muscle for training and injury prevention in youth competitive alpine skiers around the growth spurt.
摘要：
未经证实：腰椎多裂（LMF），作为腰椎的动态稳定器，可能在预防过度使用相关的投诉方面发挥重要作用。
UNASSIGNED：LMF形态与躯干稳定性相关，有症状和无症状滑雪者之间存在差异。
未经评估：队列研究。
未授权：3级。
未经评估：共有85名青少年滑雪者（28名女性，平均年龄,14.7±0.7岁；57名男性，平均年龄,14.9±0.5年)接受人体测量评估，对生物成熟的估计，基于磁共振成像和超声的LMF形态学检查，以及死虫桥接稳定性能的生物力学量化。如果运动员在主要检查前的12个月内至少记录了1次与过度使用相关的严重反诉，则将其归类为有症状。
UNASSIGNED：男性滑雪者显示出更大的LMF尺寸（即，解剖横截面积[ACSA])比女性滑雪者，除椎体L5外，无差异（8.8±1.8cm2vs8.3±1.4cm2，P=0.18）。相反，女性滑雪者的成束长度比男性滑雪者长（5.8±0.8厘米vs5.4±0.8厘米，P=0.03)。16岁以下的滑雪者（U16）滑雪者的LMF尺寸和束长度值比U15滑雪者高。成熟度偏移与L5LMF大小相关(R2=0.060，P=0.01)，束长(R2=0.038,P=0.04),肌肉厚度(R2=0.064,P=0.02)。L5LMF大小与躯干稳定性相关(R2=0.068,P=0.01)。与有症状的滑雪者相比，无症状的滑雪者的L5LMF尺寸平均高12.8％（P=0.04）。
UNASSIGNED：青年竞技高山滑雪者的LMF形态存在与性别和年龄相关的差异。此外，腰椎椎体L5水平的ACSA在生物成熟过程中会发生变化，显示一个小的，但与树干稳定性有显著关联，有症状和无症状的滑雪者背部抱怨不同。
UNASSIGNED：观察到的肌肉结构的关联（即，L5LMFACSA)具有功能方面(即，躯干稳定能力)和临床表现(即，过度使用相关的背部抱怨）进一步突出了多裂肌在成长突飞猛进的青年竞技高山滑雪者中训练和预防伤害的重要作用。
UNASSIGNED：LMF形态与躯干稳定性相关，有症状和无症状滑雪者之间存在差异。
未经评估：队列研究。
未授权：3级。
未经评估：共有85名青少年滑雪者（28名女性，平均年龄,14.7±0.7岁；57名男性，平均年龄,14.9±0.5年)接受人体测量评估，对生物成熟的估计，基于磁共振成像和超声的LMF形态学检查，以及死虫桥接稳定性能的生物力学量化。如果运动员在主要检查前的12个月内至少记录了1次与过度使用相关的严重反诉，则将其归类为有症状。
UNASSIGNED：男性滑雪者显示出更大的LMF尺寸（即，解剖横截面积[ACSA])比女性滑雪者，除椎体L5外，无差异（8.8±1.8cm2vs8.3±1.4cm2，P=0.18）。相反，女性滑雪者的成束长度比男性滑雪者长（5.8±0.8厘米vs5.4±0.8厘米，P=0.03)。16岁以下的滑雪者（U16）滑雪者的LMF尺寸和束长度值比U15滑雪者高。成熟度偏移与L5LMF大小相关(R2=0.060，P=0.01)，束长(R2=0.038,P=0.04),肌肉厚度(R2=0.064,P=0.02)。L5LMF大小与躯干稳定性相关(R2=0.068,P=0.01)。与有症状的滑雪者相比，无症状的滑雪者的L5LMF尺寸平均高12.8％（P=0.04）。
UNASSIGNED：青年竞技高山滑雪者的LMF形态存在与性别和年龄相关的差异。此外，腰椎椎体L5水平的ACSA在生物成熟过程中会发生变化，显示一个小的，但与树干稳定性有显著关联，有症状和无症状的滑雪者背部抱怨不同。
UNASSIGNED：观察到的肌肉结构的关联（即，L5LMFACSA)具有功能方面(即，躯干稳定能力)和临床表现(即，过度使用相关的背部抱怨）进一步突出了多裂肌在成长突飞猛进的青年竞技高山滑雪者中训练和预防伤害的重要作用。
