rebounding

  • 文章类型: Journal Article
    随着全球许多体育组织都可以使用创新的力板技术,可以进行及时有效的深入神经肌肉性能评估,本研究的目的是研究一些最常用的反运动垂直跳跃(CVJ)力-时间指标与篮球比赛时间和效率之间的关系.24名职业男子篮球运动员自愿参加本研究。CVJ测试程序在竞争赛季的第一季度内进行。按照标准化的热身协议,每位运动员在1,000Hz的频率下踩下双单轴测力板系统,并在没有手臂摆动的情况下执行了三个最大努力的CVJ。为了最大限度地减少疲劳的可能影响,每个跳跃试验以10~15s的休息间隔分开,3次跳跃的平均值用于性能分析.篮球比赛效率和平均比赛时间是在常规赛比赛结束时从教练组记录和正式团队记录中获得的。皮尔逊积矩相关系数(r)用于检验力-时间指标与篮球比赛时间和效率之间的关系的强度,分别针对每个因变量(p<0.05)。在演奏效率与偏心平均力以及偏心平均和峰值功率之间观察到显着的正相关(r=0.406-0.552)。同样,偏心平均功率的增加与比赛赛季的上场时间呈正相关(r=0.464)。此外,即使相对于运动员的体重(r=0.406)表示偏心平均力量,上述关系仍然存在。因此,本研究的结果表明,在男子篮球比赛的专业水平,CVJ偏心强度和功率对演奏时间和效率都有积极影响。
    With innovative force plate technology being available to many sports organizations worldwide that allow for time-efficient in-depth neuromuscular performance assessment, the purpose of the present study was to examine the relationship between some of the most commonly analyzed countermovement vertical jump (CVJ) force-time metrics and basketball playing time and efficiency. Twenty-four professional male basketball players volunteered to participate in the present study. The CVJ testing procedures were conducted within the first quarter of the competitive season span. Following a standardized warm-up protocol, each athlete stepped on a dual uni-axial force plate system sampling at 1,000 Hz and performed three maximum-effort CVJs with no arm swing. To minimize the possible influence of fatigue, each jump trial was separated by a 10-15 s rest interval and the average value across three jumps was used for performance analysis purposes. Basketball playing efficiency and average playing time were obtained at the end of the regular season competitive period from the coaching staff records and the official team records. Pearson product-moment correlation coefficients (r) were used to examine the strength of the relationships between force-time metrics and basketball playing time and efficiency, separately for each dependent variable (p < 0.05). A significant positive association was observed between playing efficiency and eccentric mean force and eccentric mean and peak power (r = 0.406-0.552). Similarly, an increase in eccentric mean power was positively correlated with the number of minutes played during the competitive season (r = 0.464). Moreover, the aforementioned relationship remained present even when eccentric mean power was expressed relative to the player\'s body mass (r = 0.406). Thus, the findings of the present study indicate that, at the professional level of men\'s basketball competition, CVJ eccentric strength and power have a positive impact on both playing time and efficiency.
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  • 文章类型: Journal Article
    本研究的目的是研究获胜和失败的比赛结果之间与比赛相关的统计数据的差异,并确定在美国大学体育协会(NCAA)Division-I比赛中,哪些性能参数对从失败的比赛结果中获胜的影响最大。男子的篮球水平。数据抓取技术用于获取2018-2019赛季的公开数据。检查的游戏总数为5,147。使用独立的t检验来检查输赢游戏结果之间的统计学上的显着差异,同时使用全模型判别函数分析来确定每个游戏相关统计量的相对贡献及其对输赢游戏结果进行分类的能力(p<0.05)。除了在比赛结束时得分更多,本研究的结果表明,获胜团队:(A)尝试并取得更多的射门得分,三点,和罚球,(b)累积更多的防守和总篮板,助攻,偷窃,和街区,(c)失误和个人犯规较少,和(d)确保更大的射门得分,三点,和罚球命中率。此外,区分胜负结果的前三个表现参数是投篮命中率,防守篮板,和助攻,占16.8%,12.2%,以及解释方差总百分比的12.0%,分别(即,合计41.0%)。总的来说,这些发现支持了与进攻和防守游戏相关的统计数据的预期作用,并进一步了解了它们如何协同工作以优化获得所需游戏结果的机会。
    The purpose of the present study was to examine differences in game-related statistics between winning and losing game outcomes and determine which performance parameters have the greatest impact in classifying winning from losing game outcomes at the National Collegiate Athletic Association (NCAA) Division-I men\'s basketball level of competition. The data scraping technique was used to obtain publicly available data over a 2018-2019 season span. The total number of games examined was 5,147. Independent t-tests were used to examine statistically significant differences between winning and losing game outcomes, while a full model discriminant function analysis was used to determine the relative contribution of each game-related statistic and its ability to classify winning from losing game outcomes (p < 0.05). Alongside scoring a greater number of points at the end of the game, the findings of the present study indicate that winning teams: (a) attempted and made more field goals, three-point, and free-throw shots, (b) accumulated more defensive and total rebounds, assists, steals, and blocks, (c) had fewer turnovers and personal fouls, and (d) secured greater field goal, three-point, and free-throw shooting percentage. Moreover, the top three performance parameters discriminating winning from losing game outcomes were field goal percentage, defensive rebounds, and assists, accounting for 16.8%, 12.2%, and 12.0% of the total percentage of explained variance, respectively (i.e., 41.0% combined). Overall, these findings support the expected roles of offensive and defensive game-related statistics and provide further insight into how they work together to optimize the chances of securing the desired game outcome.
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  • 文章类型: Journal Article
    Traditional composting has already shown a certain effect in eliminating antibiotic residues, antibiotic-resistant bacteria (ARBs), and antibiotic resistance genes (ARGs). It is worth noting that the rebounding of ARGs and the succession of the bacterial community during conventional aerobic composting are still serious threats. Considering the probable risk, improved and adaptable technologies are urgently needed to control antibiotic resistance efficiently. This study monitored how thermophilic aerobic composting affected the ARGs, as well as the bacterial diversity during the composting of cow manure spiked with sulfamethoxazole (SMX) at different concentrations. Results showed that the degradation of SMX was enhanced during thermophilic aerobic composting (control > SMX25 > SMX50 > SMX100) and was no longer detected after 20 days of composting. High temperature or heat significantly stimulated the rebounding of certain genes. After 35 days, the abundance of detected genes (sul2, sulA, dfrA7, and dfrA1) significantly decreased (p < 0.05) in control and antibiotic-spiked treatments, except for sul1. The addition of three concentrations of SMX elicited a sharp effect on bacterial diversity, and microbial structure in SMX25 led to significant differences with others (p < 0.05). The network analysis revealed more rigorous interactions among ARGs and abundant genera, suggesting that the host of ARGs potentially increased at low concentrations of SMX. Especially, genera g_norank_f__Beggiatoaceae, Ruminiclostridium, Caldicoprobacter, g_norank_o_MBA03, Hydrogenispora, and Ruminiclostridium_1 were major potential hosts for sul1. In conclusion, the rebounding of ARGs could be intermitted partially, and more efficient control of antibiotic resistance could be achieved in the thermophilic composting compared to conventional methods.
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  • 文章类型: Comparative Study
    Lateral ankle injury incidence rates are very high in the sport of basketball, with a significant proportion occurring during rebounding. Ankle braces are often used as preventative and rehabilitative techniques in the hope of minimizing the likelihood of experiencing excessive ankle inversion. This study aims to evaluate the effect of different ankle braces in preventing ankle inversion during a basketball rebounding task. Sixteen subjects participated in the study (11 males, 5 females; mean age = 26.94 years, SD = 5.32; mean height 1.72 m, SD = 0.08; mean weight 73.95 kg, SD = 13.68). Participants performed a simulated rebounding task in multiple braced conditions: unbraced (UB), Ossur Formfit (OF), Talarmade Ankleguard Air/Gel Stirrup (TAG) and Bauerfeind Malleoloc (BF). Ankle and foot inversion angles, ankle inversion moments and peroneus longus EMG activity were recorded and analysed to determine the effectiveness of each condition to resist inversion. All braced conditions reduced ankle and foot inversion angles compared to UB. In the non-dominant limb, OF showed reduced maximum ankle inversion compared to BF (non-dominant mean difference = 0.630°, p < 0.001) and reduced foot inversion compared to TAG (non-dominant mean difference = 0.966°, p = 0.035). Compared to UB, OF and TAG increased ankle inversion moments in the dominant ankle and showed decreases in the non-dominant ankle. BF reduced mean peak peroneus longus EMG activity compared to all other trials. Whilst statistically significant differences that were demonstrated between several braced conditions are relatively small, they are clinically significant knowing that the maximum barefoot inversion whilst standing is less than 17 degrees.
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  • 文章类型: Journal Article
    Following an ankle injury, athletes sometimes brace the injured ankle in hopes of minimizing the likelihood of suffering a recurring injury. This study aims to evaluate the effects of wearing an Ankle Stabilizing Orthosis (ASO) ankle brace unilaterally on the dominant side on bilateral ankle joint kinetics and kinematics and peroneus longus EMG activity. Since a significant proportion of ankle injuries in basketball occur during rebounding, data was collected during a simulated rebounding task. Rebounding is defined as the act of retrieving a missed shot attempt. Subjects oftentimes jump vertically to acquire the basketball as it rebounds from the backboard or rim. Sixteen subjects participated in the study (11 males, 5 females; mean age = 26.94 years, SD = 5.32; mean height 1.72 m, SD = 0.08; mean weight 73.95 kg, SD = 13.68). Participants completed the rebounding task in braced (ASO) and unbraced (UB) conditions. Ankle and foot inversion angles, ankle inversion moments and peroneus longus EMG activity were recorded and analysed to determine the effects of wearing an ankle brace unilaterally. In the dominant limb, when compared to UB, ASO reduced ankle and foot inversion, and increased ankle inversion moments. No significant differences were observed in peroneus longus EMG activity. In the non-dominant limb, no significant differences were observed for any of the parameters. These results suggest that wearing an ASO ankle brace on the dominant ankle reduces maximum ankle and foot inversion angles without posing an increased risk to the unbraced leg. However, the increased ankle inversion moments in the braced ankle suggest that there are adjustments regarding force distribution, perhaps due to the restricted range of motion.
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  • 文章类型: Journal Article
    UNASSIGNED: Mental health has currently shifted focus from \"deficit\" to strength-based approaches such as Resilience. Coping styles and personality factors have been well studied in Wives of persons with Alcoholism (WopA) but not Resilience. Alcohol dependence in spouse is seen as an adversity.
    UNASSIGNED: To evaluate Resilience in the WopA and explore its relationship with marital quality and clinical variables of Alcohol Dependence in their husbands.
    UNASSIGNED: A cross-sectional study in a tertiary care hospital in Bangalore, Karnataka.
    UNASSIGNED: WopA (n=34) between 25-55 years, were assessed for Resilience using Resilience Scale for Adults (RSA), while marital quality was assessed using Marital Quality Scale (MQS). The Severity of Alcohol Dependence, Age of onset of Initiation, Age of onset of Problem Drinking, and Age of onset of Dependence were evaluated in their husbands.
    UNASSIGNED: Independent sample t-test, Chi-square test, and Pearson\'s correlation were used.
    UNASSIGNED: Majority of the WopA (82%) scored low on the RSA. Low Resilience (LR) WopA scored significantly lower on all factors of RSA except the perception of future; in comparison to High Resilience (HR) WopA. Additionally, the LR WopA reported significantly poorer marital quality.
    UNASSIGNED: Most WopA had low Resilience. LR WopA also had significantly poor marital quality. These findings need to be studied further in a larger population with culturally appropriate scales. The low scoring Resilience factors amongst WopA may be utilized in strength-based psychotherapeutic approaches. There is a need to improve the understanding of Resilience and its assessment in this population.
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