The spinal mouse validity and reliability in measurement of thoracic and lumbar vertebral curvatures

زمینه و هدف: تحقیق حاضر برای بررسی میزان اعتبار این دستگاه در اندازه گیری زوایای کایفوز سینه ای و لوردوز کمری در مقایسه با عکس رادیوگرافی و همچنین تکرارپذیری درون و بین آزمونگر آن بود. روش بررسی: برای بررسی میزان اعتبار دستگاه اسپاینال موس در اندازه گیری زوایای کایفوز سینه ای و لوردوز کمری، تعداد 20 نفر از افراد مراجعه کننده به یکی از مراکز تصویربرداری پزشکی شهر تهران که قرار بود بر اساس تجویز پزشک متخص عکس رادیوگرافی کامل ستون فقرات از نمای نیمرخ تهیه کنند انتخاب شدند. معیارهای ورود و خروج آن ها بررسی شد و اندازه گیری ها با دو روش در یک روز و بدون فاصله انجام گردید، در نهایت زاویه ها در عکس رادیوگرافی به روش کوب و در اسپاینال موس با توجه به نتایج ثبت شده بر روی نمایشگر، با روش آماری همبستگی پیرسون مقایسه شدند. همچنین برای بررسی تکرارپذیری درون آزمونگر 30 نفر از دانشجویان پسر دانشگاه تهران به صورت تصادفی وارد تحقیق شدند تا در سه نوبت در سه روز متوالی اندازه گیری ها تکرار شود، همچنین برای تکرارپذیری بین آزمونگر 15 نفر از دانشجویان پسر دانشگاه تهران در دو نوبت با فاصله زمانی یک دقیقه توسط دو آزمونگر اندازه گیری شدند. در نهایت نتایج با روش همبستگی درونی بررسی قرار گرفت. یافته ها: دستگاه اسپاینال موس از اعتبارپذیری مطلوبی در مقایسه با رادیوگرافی در اندازه گیری زاویه کایفوز سینه ای (0/001=P، 0/81=r) و لوردوز کمری (0/001=P، 0/86=r) برخوردار است. همچنین تکرارپذیری درون و بین آزمونگر دستگاه اسپاینال موس نیز در اندازه گیری زوایای کایفوز سینه ای به ترتیب (0/92=ICC، 0/79ICC=) و لوردوز کمری (0/89ICC=، 0/87ICC=) مطلوب بود. نتیجه گیری: استفاده از دستگاه اسپاینال موس به عنوان یک وسیله غیرتهاجمی ایمن و جایگزینی مناسب برای عکس رادیوگرافی در اندازه گیری زوایای کایفوز سینه ای و لوردوز کمری توصیه می شود

Effect of Fatigue on the Core Muscle Endurance in Female Athletes With and Without Non-specific Chronic Low Back Pain

Purpose: Non-specific chronic low back pain (LBP) is the most common type of chronic LBP and a common debilitating condition, especially in athletes, that can also affect performance. The core muscles are necessary to create a stable level of support for sports performance and appropriate movements of all organs, and its deficiency is related to complications, such as LBP. This research aims to investigate the effect of a fatigue protocol on core muscle endurance in athletes with and without non-specific chronic LBP. Methods: A controlled laboratory study was conducted; 42 female athletes with and without non-specific chronic LBP were selected through convenience sampling method and divided into two groups with non-specific chronic LBP and without non-specific chronic LBP. McGill’s core endurance test was used to measure core muscle endurance. The measurements were done before and after the implementation of the functional core fatigue protocol (FCFP). SPSS software, version 22 and dependent t-tests and analysis of covariance (ANCOVA) were used to evaluate mean differences obtained in the two groups. The significance level was considered 95%, and the α level was ≤0.05. Results: The analysis of covariance (ANCOVA) showed a significant difference between the two groups with and without non-specific chronic LBP after performing the functional core fatigue protocol (FCFP) in McGill’s test scores in isometric flexion exercise (P=0.001), isometric extensor exercise (P=0.001), right side bridge (P=0.001) and left side bridge (P=0.001). In the post-test measurement, the endurance of the core muscles decreased in the LBP group. Conclusion: The findings revealed that fatigue can affect the core stability and reduce the core muscles endurance of female athletes with non-specific chronic LBP. Therefore, core muscle weakness can be recognized as a risk factor for chronic LBP, and in order to prevent this damage, it is recommended to strengthen this area in rehabilitation programs

Can lower extremity anatomical measures and core stability predict dynamic knee valgus in young men?

Introduction: Dynamic knee valgus (DKV) is a risk factor for lower extremity injuries such as anterior cruciate ligament and patellofemoral pain syndrome. Purpose of the current study was to investigate the relationship between lower extremity anatomical measures (LEAM) and core stability with DKV during the single-leg squat. Methods: Thirty healthy men aged between 18 and 28 years participated in this cross-sectional biomechanical study. DKV was assessed using a 6-camera motion analysis system during a single-leg squat task. Anteversion of hip, hip internal and external rotation, Q-angle, knee hyperextension, tibial torsion, tibia vara, plantar arch index, and core stability were measured using standard clinical procedures. To predict DKV, a multiple linear regression model was used. Result: The stability index negatively and plantar arch index positively predicted greater DKV during the single-leg squat task (P = 0.001 and P = 0.09, respectively). Research variables together predicted 82% of the variance in DKV (F(4,26) = 28.09, p < 0.001). However, relationships between other variables and DKV were not found. Conclusion: The core stability index and plantar arch index were associated with observed DKV during the single-leg squat. These results suggested that proximal and distal variables to the knee should be considered when evaluating individuals who present DKV during the single-leg squat. (C) 2021 Elsevier Ltd. All rights reserved

بررسی اثربخشی 8 هفته تمرینات اصلاحی بر نمرات آزمون عملکردی تارارا در مردان غیر ورزشکار مبتلا به ناهنجاری لوردوز افزایش یافته کمری

Background and Objectives: Changes in the optimal alignments of the lumbar spine can affect function, and correcting these adverse changes may improve function. Therefore, the aim of the present study was to investigate the effect of 8 weeks of corrective exercises on the Tarara functional test scores in non-athlete men with lumbar hyperlordosis. Materials and Methods: In the present study, 26 men aged 18 to 25 years in Tehran city with lumbar hyperlordosis (greater than or equal to 51 degrees) were purposefully selected as study samples. Then the samples were randomly divided into two groups (experimental: 13 N, control: 13 N). The lumbar lordosis angle was assessed using a flexible ruler and movement function through Tarara functional tests scores were evaluated in two stages, pre-test, and post-test. The paired sample t-test and Wilcoxon test were used to examine the within-group changes and the independent sample t-test and Mann Whitney - u test was used to compare the between-group differences. Results: The results of this study showed that the corrective exercises group had significantly better performance in full Scott, one-legged Scott, downward dog, jump, Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST), lower limb Y balance test, Triple hop for distance, Lumbar Endurance, side plank abduction, Side Plank Adduction, Nordic hamstring, Lateral Lunge for Distance, In-Line Lunge for Distance and Straight Leg Raise (P &lt;0.05). Conclusion: Based on the results of this study, we conclude that corrective exercises are useful in improving movement function in people with lumbar hyperlordosis. How to cite this article: Elahi AR, Seidi F, Karimi-Zadeh Ardakani M. Effect of 8 Weeks of Corrective Exercises on the Lumbar Lordosis Angle and Lower Limb Function in Non-Athlete Men with Lumbar Hyperlordosis. Irtiqa Imini Pishgiri Masdumiyat. 2022;10(1):55-66.سابقه و هدف: تغییر در راستای مطلوب ستون فقرات کمری می‌تواند بر عملکرد افراد اثرگذار باشد و اصلاح این تغییرات نامطلوب ممکن است بتواند این تغییرات را بهبود ببخشد. لذا هدف تحقیق حاضر، بررسی اثربخشی 8 هفته تمرینات اصلاحی بر نمرات آزمون عملکردی تارارا در مردان غیر ورزشکار مبتلا به ناهنجاری لوردوز افزایش یافته کمری بود. روش بررسی: تحقیق حاضر از نوع نیمه تجربی با طرح پیش‌آزمون- پس‌آزمون بود. در پژوهش حاضر 26 مرد 18 الی 25 سال شهرستان تهران دارای ناهنجاری لوردوز افزایش‌یافته کمری (بزرگتر و یا مساوی 51 درجه)، به صورت هدفمند به عنوان نمونه‌های پژوهش انتخاب شدند. در ادامه نمونه‌ها به صورت تصادفی در قالب دو گروه تقسیم شدند(تمرین: 13 نفر، کنترل: 13 نفر). زاویه لوردوز کمری با استفاده از خطکش منعطف، عملکرد حرکتی از طریق آزمون عملکردی تارارا در دو مرحله‌ی پیش‌آزمون و پس‌آزمون مورد ارزیابی قرار گرفت. به منظور بررسی تغییرات درون‌گروهی از آزمون آماری تی همبسته و ویلکاکسون و به منظور مقایسه تفاوت‌های بین‌گروهی از آزمون آماری تی مستقل و یومن-ویتنی استفاده شد. یافته ها: نتایج این پژوهش نشان داد که تمرینات اصلاحی تاثیر مثبت و معناداری را بر آزمون‌های اسکوات کامل، اسکوات تک‌پا، داگ به سمت پایین، پرش، تست پایداری اندام فوقانی زنجیره حرکتی بسته (CKCUEST)، آزمون تعادل Y اندام تحتانی، لی‌لی سه گانه، استقامت کمری، پلانک طرفی ابداکشن، پلانک طرفی اداکشن، نوردیک همسترینگ، لانچ پهلو، لانچ رو به رو و بالا بردن فعال پا داشته است. (P &lt;0.05). نتیجه گیری: با توجه به نتایج به دست آمده از یافته‌های این پژوهش، نتیجه می‌گیریم که انجام تمرینات اصلاحی در بهبود عملکرد حرکتی در افراد مبتلا ناهنجاری لوردوز افزایش یافته کمری مفید است. How to cite this article: Elahi AR, Seidi F, Karimi-Zadeh Ardakani M. Effect of 8 Weeks of Corrective Exercises on the Lumbar Lordosis Angle and Lower Limb Function in Non-Athlete Men with Lumbar Hyperlordosis. Irtiqa Imini Pishgiri Masdumiyat. 2022;10(1):55-66

Follow-up Comparison of the Effect of Eight-weeks Corrective Exercises With and Without Myofascial Release on Postural Kyphosis Deformity

Introduction: The present research aimed to compare and follow-up the effect of 8-week corrective exercises with and without the myofascial release on functional kyphosis deformity in young adults. Methods: It was a randomized controlled trial in the university laboratory. Forty-five male students suffering from abnormal hyperkyphosis deformity (kyphosis of more than 42°) were selected and randomly assigned to three groups: corrective exercises, combinational exercises (corrective and myofascial release), and control. The Mean±SD age, height, and weight of the study sample were 22.12±2.88 years, 175.44±6.80 cm, and 71.21±7.31 kg, respectively. The study groups did the exercises for 8 weeks, under the direct observation of the researchers. The kyphosis angle of the participants was measured using a flexible ruler, at the baseline, post-test, and follow-up (4 weeks after the end of the exercises) stages. The collected data were analyzed with repeated measures Analysis of Variance (ANOVA) and Analysis of Covariance (ANCOVA) tests. Results: After 8 weeks of exercises, the degree of kyphosis in the post-test and follow-up stages was significantly lower than that in the pre-test, in both training groups. The results of the ANCOVA test demonstrated that the thoracic kyphosis degree in the combinational exercises group was significantly lower than that of the corrective exercises group (P≤0.05), in the post-test and follow-up stages. Conclusion: According to the results, the corrective exercises program in combination with the myofascial release is more effective than the corrective exercises alone, in correcting the thoracic kyphosis deformity

The Effects of Self-Myofascial Release on Hamstring and Gastrocnemius Muscles Using Foam Roll on Postural Sway, Knee Proprioception, and Dynamic Balance in Recreationally Active Females

Poor joint proprioception and balance maintenance may lead to sports injuries. Numerous studies have indicated that self-myofascial release (SMR) can improve the function of the proprioception and balance systems. Thus, this study aimed to investigate the effects of acute bouts of SMR on the center of pressure displacements during four stance positions, knee joint position sense at 45° and 90° in open kinetic chain tasks, and dynamic balance during the Y-balance test. Forty-two recreationally active females aged 20–25 years were assigned to either the foam roll group performing 1 min × 3 sets of SMR in the posttest session (N = 22) or the control group (N = 20). Joint position sense at 90° (p = .021), dynamic balance in the anterior (p = .007) and posterolateral (p &lt; .001) directions, as well as the composite score (p = .001), improved significantly in the foam roll group. According to the findings, SMR may improve knee joint position sense at 90° and dynamic balance without any significant impacts on postural sway.</jats:p

The comparison between onset activity of lumbo-pelvic and peroneal muscles in elite female Taekwondo players with and without functional ankle instability during single-leg drop landing

Ankle is the first body part that contacts the ground during daily activities. The common injury in ankle joint is the external sprain that involves the proximal joints and the damaged ankle itself. The aim of this study was to compare onset activity of lumbo-pelvic and peroneal muscles in elite femaletaekwondo players with and without functional ankle instability during single-legdrop landing. 13 players with functional ankle instability (age 21.23±1.36 yrs, weight 53.76±3.56 kg and height 166.46±4.84 cm) and 13 healthy players (age 20.92±1.25 yrs, weight 53.69±4.17 kg and height 166.92±5.00 cm) were purposively selected. The electromyography activity of erector spine, quadratus lumborum, gluteus medius and peroneus longus muscles was recorded during single-leg drop landing. In order to compare onset activity of muscles, multivariate variance analysis was used (P≤0.05).The results showed that players with FAI had significant latency at onset of erector spine, quadratus lumborum, gluteus medius and peroneus longus muscles activity in comparison with control group. Therefore, these players suffer from disorder in peroneus longus muscle activity in addition to latency of lumbo-pelvic muscle activation. This factor could be the cause of their recurrent injury