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Abstracts from the 19th Annual Scientific Conference of Montenegrin Sports Academy and “Sport, Physical Activity and Health: Contemporary perspectives”: Dubrovnik, Croatia. 7-10 April 2022 黑山体育学院第19届年度科学会议和“运动、体育活动与健康:当代观点”的摘要:克罗地亚杜布罗夫尼克,2022年4月7日至10日
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-04-01 DOI: 10.26773/mjssm.220401
D. Bjelica, S. Popović, Selcuk Akpinar, D. Sekulić
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引用次数: 0
Analysis of Crossing Opportunities at the 2018 FIFA World Cup 2018年世界杯传中机会分析
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220305
Michalis Mitrotasios, A. Kubayi, V. Armatas, P. Larkin
The purpose of this study was to investigate open-play crosses at the 2018 FIFA World Cup tournament, with spe- cific reference to the mechanism and match status of the crosses. Descriptive statistics (i.e., frequency counts and percentages) and chi-square tests of association were used to analyse the data. The study observed a total of 949 crosses, resulting in 20 goals scored (2.1%). Descriptive statistics highlighted that offensive teams had more goal-scor- ing attempts when they used counter-attacks (18.6%) compared to organized (18.2%) and direct (10.9%) attacks. A greater number of goal-scoring attempts were observed when teams used out-swinging crosses (17.4%) as opposed to in-swinging (15%) and straight (13.5%) crosses. There was a significant (p < 0.05) association between the type of attack and match status. Winning teams preferred to adopt a counter-attacking style of play; losing teams used more direct attacking strategies, and drawing teams utilized more organized attacks. Losing teams took the highest number of crosses from Zones 1 (61.1%) and 2 (56.7%) compared to other zones. These findings provide practical implications for football coaches to tailor match tactics to replicate crossing scenarios at international competitions.
本研究的目的是调查2018年国际足联世界杯比赛中的公开比赛传中,具体涉及传中的机制和比赛状态。使用描述性统计(即频率计数和百分比)和关联的卡方检验来分析数据。这项研究一共观察到949次传中,其中有20个进球(2.1%)。描述性统计数据强调,进攻型球队在使用反击时(18.6%)比有组织进攻(18.2%)和直接进攻(10.9%)有更多的进球尝试。当球队使用外摆传中(17.4%),而不是内摆传中(15%)和直线传中(13.5%)时,可以观察到更多的进球尝试。攻击类型与比赛状态有显著相关(p < 0.05)。获胜的球队倾向于采用反击的打法;输球的球队使用更直接的进攻策略,平局的球队使用更有组织的进攻。输球的球队从1区(61.1%)和2区(56.7%)接到的传中次数最多。这些发现为足球教练量身定制比赛战术以复制国际比赛中的传中场景提供了实际意义。
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引用次数: 3
Match Running Performance of Brazilian Professional Soccer Players according to Tournament Types 巴西职业足球运动员在比赛中的跑动表现
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220306
Lucas de Albuquerque Freire, M. Brito, Pablo Merino Muñoz, D. Pérez, Hugo Cerda Kohler, E. Aedo-Muñoz, M. Slimani, C. Brito, N. Bragazzi, H. Znazen, B. Miarka
The present study aimed to report different level games in terms of their external game loads, using data collected from GPS performance indicators in Brazilian soccer teams. We used measures of 464 performances of professional soccer athletes during the National Tournament (NT=265), State Tournament (ST=89), National Cup (NC=44), and the International Tournament (IT=66). The performance analysis included the assessment of Total (meters) and Relative (meters/minutes) distances; running (>14km/h), and sprinting (>18km/h) distance; the number of sprints (>18km/h and >24km/h); accelerations (above three m/s2), deceleration (less than three m/s2) and jumps (>30 cm); Total and Relative load – per minute. There were differences (p<0.05) in terms of relative distance between NT and ST (102.2 ±9.5 vs. 98.1± 10.3) and between ST and NC (98.1± 10.3 vs. 103.4 ±9.6). In sprints >18km/h NT differed from ST (60.4 ±5.9 vs 52.7 ±19.9). In sprints >24km/h differences could be found between NT and ST (10.7 ±5.9 vs 8.7 ±5.4). In Total Load NT differed with respect to ST (908.6 ±141.5 vs. 852.7 ±138.5) In Relative Load differences were reported between NT and ST (10 ±1.2 vs. 9.3 ±1.4) and IT (10 ±1.2 vs. 9.4 ±1.4), and between ST and NC (9.3 ±1.4 vs. 10.0 ±1.4). Finally, concerning deceleration, NT differed when compared to ST (36.1 ±9.9 vs. 32 ±11) as well as ST differed from IT (32 ±11 vs. 37.5 ±9.7). The present results make it possible to create specific training games according to tournament level associated with the predominant activities performed during the competition.
本研究旨在报告不同级别游戏的外部游戏负载,使用从巴西足球队的GPS性能指标收集的数据。我们对464名职业足球运动员在全国锦标赛(NT=265)、州锦标赛(ST=89)、全国杯赛(NC=44)和国际锦标赛(IT=66)期间的表现进行了测量。成绩分析包括总(米)距离和相对(米/分钟)距离的评估;跑步(>14km/h)、冲刺(>18km/h)距离;冲刺次数(>18km/h和>24km/h);加速(大于3 m/s2)、减速(小于3 m/s2)和跳跃(>30 cm);总负荷和相对负荷-每分钟。两者存在差异(p18km/h NT差异于ST(60.4±5.9 vs 52.7±19.9))。在>24km/h的短跑中,NT和ST之间存在差异(10.7±5.9 vs 8.7±5.4)。NT与ST的总负荷差异(908.6±141.5 vs 852.7±138.5),NT与ST的相对负荷差异(10±1.2 vs 9.3±1.4),IT的相对负荷差异(10±1.2 vs 9.4±1.4),ST与NC的相对负荷差异(9.3±1.4 vs 10.0±1.4)。最后,在减速方面,NT与ST(36.1±9.9 vs. 32±11)不同,ST与IT(32±11 vs. 37.5±9.7)不同。目前的结果使得根据与比赛期间进行的主要活动相关的锦标赛级别创建特定的训练游戏成为可能。
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引用次数: 8
Effects of Different Levels of Fatigue on Vertical Jump Performance, Vertical Stiffness, and Intralimb Coordination 不同程度的疲劳对垂直跳跃性能、垂直刚度和肢体内协调的影响
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220301
D. Knihs, J. A. Dias, J. Pupo
This study aimed to investigate the acute effects of different levels of muscular fatigue on vertical jump perfor- mance, vertical stiffness, and intralimb coordination. Seventeen physically active men performed two fatigue protocols (low volume and high volume) composed of continuous vertical jumps on separate weeks. Jump height, vertical stiffness, and intralimb coordination were measured during countermovement vertical jumps prior to and immediately following the fatigue protocols. The jumps were performed on a force plate and filmed with high-speed cameras. The continuous relative phase was calculated as a measure of intralimb coordination. Mixed-model ANOVA was used to compare the variables between conditions and times. The fatigue index was greater in the high-volume protocol (27±12%) than in the low-volume protocol (16±7%). Jump height decreased (p≤0.01) after the high-volume protocol. Vertical stiffness decreased (p=0.05), and the continuous relative phase of thigh-shank coupling in the ascent phase of countermovement jumps increased (p=0.04) after both proto- cols. In conclusion, jump performance was only affected by higher fatigue indexes, while vertical stiffness and intralimb coordination were affected similarly irrespective of the fatigue levels.
本研究旨在探讨不同程度的肌肉疲劳对垂直跳跃表现、垂直僵硬度和肢体协调的急性影响。17名身体活跃的男性在不同的周内进行了两种疲劳方案(低量和高量),由连续的垂直跳跃组成。在疲劳方案之前和之后的反向垂直跳跃过程中,测量了跳跃高度、垂直刚度和下肢协调性。跳伞是在一个测力板上进行的,并用高速摄像机拍摄下来。计算了连续相对相位作为边缘内配位的度量。采用混合模型方差分析比较条件和时间之间的变量。大容量方案的疲劳指数(27±12%)大于小容量方案(16±7%)。高容量方案后跳跃高度降低(p≤0.01)。两种方案均降低了垂直刚度(p=0.05),增加了反向跳跃上升阶段股骨-小腿耦合的连续相对相位(p=0.04)。综上所述,只有较高的疲劳指数才会影响跳跃性能,而无论疲劳程度如何,垂直刚度和肢内协调性都受到类似的影响。
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引用次数: 1
Differences in the Most Demanding Scenarios of Basketball Match-Play between Game Quarters and Playing Positions in Professional Players 职业球员在最苛刻的篮球对抗赛场景下的比赛区域和位置差异
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220302
F. García, Hugo Salazar, Jordan L. Fox
The purpose of this study was to compare the most demanding scenarios (MDS) encountered by professional basketball players across game quarters and playing positions during official match-play. Ten professional bas- ketball players were monitored during 11 matches using a local positioning system. Peak physical demands were measured via total distance, distance >18 and >21 km·h -1 , number of sprints >18 and >21 km·h -1 , and number of accelerations and decelerations >2 and >3 m∙s -2 captured over 30, 60, 120, 180, and 300-s rolling averages. Linear mixed models and effect sizes (ES) were used to compare MDS encountered between game quarters and playing positions. Between Quarters 1 and 2, there was a reduction in the total distance (ES = 0.64-1.39) for all playing groups along with a reduction in distance >21 km·h -1 in centres (ES = 0.77-0.81) and a reduction in accelerations and decelerations >2 m∙s -2 in guards (ES = 0.66-0.78) across longer sample periods (180-300-s). Between Quarters 1 and 4, reductions in the total distance were evident for forwards and centres (ES = 0.64-0.91) as well as distance and sprints >21 km·h -1 in centres (ES = 0.64-0.97). Regarding positional differences, guards and forwards covered a higher total distance than centres across most quarters and sample periods (ES = 0.22-1.44). Our data suggest a decrease in MDS with game progression in basketball. In addition, MDS appear to be duration-specific and posi- tion-dependent in basketball. Therefore, practitioners should consider these differences in MDS based on game quarters and positional demands to optimise individual and team performance.
本研究的目的是比较职业篮球运动员在正式比赛中所遇到的最苛刻的场景(MDS)。10名职业篮球运动员在11场比赛中使用本地定位系统进行了监测。通过在30、60、120、180和300秒滚动平均时间内捕获的总距离、距离>18和>21 km·h -1、冲刺次数>18和>21 km·h -1以及加速和减速次数>2和>3 m∙s -2来测量峰值物理需求。使用线性混合模型和效应大小(ES)来比较游戏区域和游戏位置之间遇到的MDS。在第1季度和第2季度之间,所有比赛组的总距离都减少了(ES = 0.64-1.39),中心的距离减少了>21 km·h -1 (ES = 0.77-0.81),后卫的加速和减速减少了>2 m∙s -2 (ES = 0.66-0.78),时间更长(180-300-s)。在第1和第4季度之间,前锋和中锋的总距离明显减少(ES = 0.64-0.91),中锋的距离和冲刺>21 km·h -1 (ES = 0.64-0.97)。就位置差异而言,后卫和前锋在大多数季度和样本期间的总距离高于中锋(ES = 0.22-1.44)。我们的数据表明,随着篮球比赛的进展,MDS会减少。此外,在篮球运动中,MDS似乎是持续时间特异性和位置依赖性的。因此,从业者应该根据比赛场地和位置需求来考虑MDS的这些差异,以优化个人和团队的表现。
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引用次数: 1
Physical Activity and Sedentary Behaviour in Croatian Preschool Children: A Population-Based Study 克罗地亚学龄前儿童的身体活动和久坐行为:一项基于人群的研究
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220304
Maja Vukelja, D. Milanovic, Sanja Šalaj
This study aimed to determine the differences in physical activity and sedentary behaviour in preschool children living in different geographical regions. Preschool children (N=1625) and their parents from different parts of Croatia, from urban and rural settlements, participated in this cross-sectional, population-based study. Parents completed the Netherlands Physical Activity Questionnaire (NPAQ), a measure of physical activity and sedentary behaviour in children. The main results of this study show differences in physical activity and sedentary behaviour in preschool children living in four geographical regions in Croatia (F=4.45; p<0.01). The least physically active are children from a continental area that gravitates to the capital city, while the most active are children from a southern coastal region. Sedentary behaviour is the greatest in the rural eastern Croatian continental region. Higher physical activity and lower sedentary activities in young children living in coastal compared to continen- tal regions show possible specific advantages of Mediterranean climate in general. The practical importance of information obtained in this study is a need for a specific intervention strategy for improving physical activity in continental preschool institutions.
本研究旨在确定生活在不同地理区域的学龄前儿童在体力活动和久坐行为方面的差异。来自克罗地亚不同地区城市和农村定居点的学龄前儿童(N=1625)及其父母参与了这项以人口为基础的横断面研究。家长们完成了荷兰体育活动问卷(NPAQ),这是一项衡量儿童体育活动和久坐行为的问卷。本研究的主要结果显示,生活在克罗地亚四个地理区域的学龄前儿童在体力活动和久坐行为方面存在差异(F=4.45;p < 0.01)。来自被首都吸引的大陆地区的孩子运动最少,而最活跃的是来自南部沿海地区的孩子。久坐行为在克罗地亚东部的农村地区最为严重。与大陆地区相比,生活在沿海地区的幼儿身体活动较多,久坐不动的活动较少,这表明地中海气候总体上可能具有特殊的优势。本研究获得的信息的实际重要性是需要一个具体的干预策略来改善大陆学前机构的身体活动。
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引用次数: 4
Marketing Concept in Elite Team Sports Clubs in Serbia: Impact of Leadership Styles, Organizational Learning Culture, and Climate for Innovation 塞尔维亚精英团队体育俱乐部的营销观念:领导风格、组织学习文化和创新氛围的影响
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220309
R. Matic
This research tested the interactions among organizational learning culture, leadership styles, climate for innovation, and marketing concept of sports clubs in team sports. The study included elite sport managers (N=118), from four team sports (football, basketball, handball, and volleyball), who participated in the highest rank of national competition in Serbia. The organizational learning culture was measured with attitudes of respondents about the organizational learning culture at individual, team or group level, and organization as dichotomous variables, while leadership styles used the MLQ self-assessment questionnaire. The climate for innovation scale was measured with scales for assessing organizational support for creativity, maladaptation, support for innovation, and resource supply. The presence/absence of components of the different marketing mix aspects was measured as a four-dimensional variable for evaluation marketing concept. The results supported the mediation and path models. Direct effect to variable marketing concept is noticed only in the organizational learning culture, while climate for innovations and leadership style did not have a direct effect on the marketing concept. Indirect effects revealed that the status of the sports branch, the market position of each club in its sport competitive results, and the education background of managers' impact marketing concept in team sports in Serbia. The theoretical and practical contributions of obtaining results are discussed.
本研究考察了团体运动中组织学习文化、领导风格、创新氛围与体育俱乐部营销理念的交互作用。该研究包括来自四个团队项目(足球、篮球、手球和排球)的精英体育经理(N=118),他们参加了塞尔维亚最高级别的国家比赛。组织学习文化以被调查者对个人、团队或团体层面的组织学习文化态度和组织作为二分类变量来衡量,而领导风格则采用MLQ自评问卷来衡量。创新气候量表采用组织对创新支持、适应不良、创新支持和资源供应的评估量表进行测量。不同营销组合方面的组成部分的存在/缺失作为评估营销概念的四维变量进行测量。结果支持中介模型和路径模型。只有组织学习文化对可变营销理念有直接影响,而创新氛围和领导风格对营销理念没有直接影响。间接影响表现为体育分支机构的地位、各俱乐部在其体育竞技成绩中的市场地位、管理者在塞尔维亚团队体育中影响营销理念的教育背景。讨论了所得结果的理论和实际贡献。
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引用次数: 0
An Examination of Loading Profiles for Youth Athletes Performing the Hang Power Clean 青年运动员悬举清洁动作的负荷分析
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220308
Kelton Mehls, Sarah C. Martinez, Connor Edwards
Weightlifting derivatives have become an increasingly popular form of resistance training among youth athletes over the past decade. This study aimed to examine the loading profiles of youth athletes during the hang power clean to determine optimal loading parameters for force, power, rate of force development, and barbell velocity. Sixteen male youth athletes (Age: 16.94 ± 0.97 years; Height: 180.08 ± 8.14 cm; Body mass: 81.06 ± 15.04 kg; Hang Clean 1RM 70.17 ± 14.41 kg) performed three repetitions of the hang power clean at 10% intervals ranging from 30-90% of their one-repetition maximum (1RM). One-way repeated measures ANONAs revealed that external load had a significant effect on the peak and average of all variables examined (p < 0.05). Most notably, peak power was maximized at 70% 1RM which was not significantly different 60-90% 1RM. Peak rate of force development was maximized at 90% 1RM, though it was not significantly greater than 50-90%1RM. Conversely peak barbell velocity was maximized at 30% 1RM which was significantly greater than 50-90% 1RM. While the results for power are similar to that of older, stronger athletes, the youth population in this study maximized barbell velocity and rate of force development at different external loads compared to more developed athletes. These results seem to suggest that youth athletes need to achieve a higher level of strength before they are capable of training with high relative external loads while maintaining high barbell velocities.
在过去的十年里,举重衍生品已经成为青少年运动员中越来越受欢迎的一种抗阻训练形式。本研究旨在研究青年运动员在悬空力量清洁时的负荷情况,以确定力量、力量、力量发展速度和杠铃速度的最佳负荷参数。男青年运动员16名(年龄:16.94±0.97岁;高度:180.08±8.14 cm;体重:81.06±15.04 kg;悬挂清洁1RM(70.17±14.41 kg)以10%的间隔进行三次悬挂动力清洁,间隔范围为一次重复最大值(1RM)的30-90%。单向重复测量ANONAs显示,外部负荷对所有变量的峰值和平均值有显著影响(p < 0.05)。最值得注意的是,峰值功率在70% 1RM时达到最大,而60-90% 1RM之间差异不显著。力发展的峰值速率在90%1RM时达到最大,但并不显著大于50% -90%1RM。相反,杠铃速度峰值在30% 1RM时达到最大值,明显大于50-90% 1RM。虽然力量的结果与年龄更大、更强壮的运动员相似,但与更发达的运动员相比,本研究中的年轻人在不同的外部负荷下最大限度地提高了杠铃速度和力量发展速度。这些结果似乎表明,青年运动员需要达到更高水平的力量,才能在保持高杠铃速度的同时进行高相对外部负荷的训练。
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引用次数: 0
Repeated Sprint Ability of Youth Football Players in the Same Age Category According to Playing Position and Competition Level 同年龄组青少年足球运动员不同位置和比赛水平的重复冲刺能力
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220307
O. Çetin, M. Kocak
This study aims to examine repeated sprint performances of young soccer players in the same age category according to competition level and playing positions. 67 young soccer players in the U16 age category and from 4 different teams competing in two different competition levels participated voluntarily in this study. The participants performed the Bangsbo Sprint Test adapted by Wragg (7×34,2 m with 25-second recovery) to determine repeated sprint performance. The test variables were best sprint time, mean sprint time, and the fatigue index. The best sprint time and mean sprint time results varied according to competition level (p˂0,05) but the fatigue index did not differentiate according to competition level (p˃0,05). It is also determined that at a high competition level players have revealed better-repeated sprint performance. When examined the data in terms of game position, best sprint time and mean time values have varied (p˂0,05) but the fatigue index did not have significant differences (p˃0,05). Considering the data according to game positions, forwards, full-backs and wingers showed higher performance than central midfielders, central defenders, and goalkeepers. Consequently, our results suggest that performance in repeated-sprint the best sprint values and mean sprint values belonging to repeated performances of youth players from the same age category differ according to competition levels and game positions, whereas the fatigue index does not differ.
本研究旨在检视同年龄组别青少年足球运动员在不同比赛水平及位置上的重复冲刺表现。67名U16年龄段的年轻足球运动员,来自4支不同的球队,参加了两个不同的比赛水平。通过Wragg (7×34,2米,25秒恢复)改编的Bangsbo冲刺测试来确定参与者的重复冲刺表现。试验变量为最佳冲刺时间、平均冲刺时间和疲劳指数。最佳冲刺时间和平均冲刺时间在不同的比赛水平上有差异(p小于0.05),但疲劳指数在不同的比赛水平上没有差异(p小于0.05)。在高水平的比赛中,运动员表现出更好的重复冲刺表现。当对比赛位置的数据进行检验时,最佳冲刺时间和平均时间值有所不同(p小于0.05),但疲劳指数没有显著差异(p小于0.05)。从比赛位置的角度来看,前锋、边后卫、边锋的表现比中场、中卫、门将的表现更好。因此,我们的研究结果表明,同一年龄组青年球员在重复冲刺中的表现、最佳冲刺值和属于重复冲刺的平均冲刺值随比赛水平和比赛位置的不同而不同,而疲劳指数没有差异。
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引用次数: 2
MJSSM Editors among Top Scientists Cited Worldwide in Stanford List MJSSM编辑在斯坦福大学名单中被引用的全球顶级科学家中
IF 1.3 Q3 SPORT SCIENCES Pub Date : 2022-03-01 DOI: 10.26773/mjssm.220310
B. Masanovic
In ancient times, science was practiced only by the privileged, primarily because of its poor accessibility. However, the development of ICT has enabled modern man to make science much more accessible to him/ her. For that reason, today, there are many more scientists who are trying to change the world for the better with their activities. In the race for new knowledge and original discoveries, scientists want to be better than others. Different metrics are used to measure quality among scientists. Stanford University recently published an updated list of the best scientists in the world, which is considered one of the most prestigious. On a recently published list, three editors of Montenegrin Journal of Sports Science and Medicine: Yousef Saleh Khader, Sergej M. Ostojic and Stevo Popovic have been ranked among the world’s top 2% most-cited scientists in 2020 and the purpose of this editorial is to recognize and promote their scientific impact and scientific excellence.
在古代,只有特权阶层才从事科学研究,主要是因为它不易接近。然而,信息通信技术的发展使现代人能够更容易地接触到科学。因此,今天,有更多的科学家试图通过他们的活动让世界变得更美好。在争夺新知识和原创发现的竞赛中,科学家们希望比别人做得更好。不同的标准被用来衡量科学家的质量。斯坦福大学最近公布了一份最新的世界上最好的科学家名单,这被认为是最负盛名的名单之一。在最近公布的一份名单中,黑山体育科学与医学杂志的三位编辑:Yousef Saleh Khader, Sergej M. Ostojic和Stevo Popovic在2020年被引用最多的科学家中排名世界前2%,这篇社论的目的是承认和促进他们的科学影响和科学卓越性。
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引用次数: 0
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Montenegrin Journal of Sports Science and Medicine
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