Physiological profile of a professional boxer preparing for Title Bout: A case study     

Israel Halperin  Steven Hughes  Dale W Chapman 《Journal of sports sciences》2016,34(20):1949-1956

This study aimed to (1) profile a professional boxer (23 years and 80 kg) with boxing-specific, muscle function, aerobic capacity and body composition tests, and (2) quantify how these measures varied during an 8-week preparation phase leading to, and post a state-Title Bout fought in the 76.2-kg class. A series of boxing-specific and muscle function tests were completed on 11 occasions: 9 prior and twice after the bout, each separated by approximately 2 weeks. The boxing test included 36 maximal punches (9 of each: lead and rear straights, lead and rear hooks) to a punching integrator measuring forces and velocity. Muscle function tests included countermovement jump, drop-jumps, isometric mid-thigh pull and isometric bench-press. Body composition was assessed using skin-fold measurements on three occasions and one dual energy X-ray absorptiometry scan. Aerobic capacity was assessed using 2 VO₂ max tests. Leading up to the bout, performance decreased in isometric mid-thigh pull (8%), isometric bench-press (5%), countermovement jump (15%) and impact forces in 3 of 4 punches (4%–7%). Whereas measures of dynamic and isometric muscle function remained depressed or unchanged post competition, punching forces (6%–15%) and aerobic power (6%) increased. Data suggest the athlete may have super-compensated following rest as fatigue dissipated and further adaptation occurred.  相似文献   

Sibling incest: a study of the dynamics of 25 cases   总被引：1，自引：0，他引：1  

H Smith  E Israel 《Child abuse & neglect》1987,11(1):101-108

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Aspekte der Sinnes- und Neurophysiologie im Sport     

U. Bartmus  H. Heck  H. Schumann  G. Tidow  Siegfried Israel 《Sportwissenschaft》1998,28(1):96-97

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Validity of a near-infrared spectrophotometry device for estimating human body composition     

R G Israel  J A Houmard  K F O'Brien  M R McCammon  B S Zamora  A W Eaton 《Research quarterly for exercise and sport》1989,60(4):379-383

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Academic librarian's transition to blended librarianship: a phenomenology of selected academic librarians in Zimbabwe     

Israel Mbekezeli Dabengwa  Jaya Raju  Thomas Matingwina 《The Journal of Academic Librarianship》2019,45(4):343-357

This paper explores the shared experiences of practices of blended librarianship among Zimbabwean academic librarians to identify how adequately they comply with their dynamic roles and functions. The paper relies on the theoretical constructs from Bell and Shank's (2004, 2007) blended librarianship and Lave and Wenger's (1991) Legitimate Peripheral Participation (LPP) to understand how Zimbabwean academic librarians practice blended librarianship in the workplace through engagement in legitimate work tasks. The investigators used phenomenology to explore academic librarians' experiences of blended librarianship. They selected a sample of 101 academic librarians and delivered a semi-structured questionnaire to the sample, conducted document research and interviewed key informants from the sample. The researchers collected data from the Bindura University of Science Education, Chinhoyi University of Technology, Lupane State University, Midlands State University, the National University of Science and Technology, and PHSBL80 Library which chose to be undisclosed. Each institution adopted blended librarianship in its way. Four (4) different categories of blended librarianship emerged from the experiences; that is “transcending blended librarians”, “partially blended librarians”, “intermittent blended librarians” and “aspiring blended librarians”, displaying each institution's level of instructional technology and instructional design roles. The study proposes that the “Academic librarian's transition to blended librarianship” two-by-two matrix that developed was in this inquiry needs further refinement. Further enquiries may test the matrix within the same sites or other locales altogether to corroborate if the results are replicable.  相似文献   

Proceedings of the Eighth Annual Conference of the National Council for Jewish Education     

Israel L. Eisenberg 《Journal of Jewish Education》2013,79(3):168-174

Research about Jewish choral singers provides insight to a previously unstudied population of adult Jewish learners. Drawing on over 2,000 responses to the First-Ever Survey of Jewish Choral Activity, this article describes how Jewish choral experiences enable adults to deepen their involvement in Jewish life and learning. Survey results suggest that participants in Jewish choral groups resemble secular singers in terms of social, identity, and skill development, but derive additional benefits in terms of Jewish Peoplehood, Jewish Competence, Spirituality, and Jewish Community. Jewish choral activities particularly benefit singers under 45 by providing them opportunities to integrate their Jewish and musical lives.  相似文献   

Trajectories of maternal verbal aggression across the middle school years: associations with negative view of self and social problems     

Donovan KL  Brassard MR 《Child abuse & neglect》2011,35(10):814-830

Objective

The primary research objective was to explore the relationship between trajectories of maternal verbal aggression (VA) experienced by low-income, community middle school students across a three-year period and outcomes that have been found to be related to VA in previous work, including a negative view of self and social problems.

Method

Longitudinal data were collected from 421 youth (51.8% male) attending two middle schools over 3 years using a multiple-informant survey design. K-means cluster analysis was used to identify trajectories of VA using youth ratings of the Conflict Tactics Scale: Parent-Child (Straus, Hamby, Finkelhor, Moore, & Runyan, 1998). Dependent variables were self-reported depression, self-esteem, delinquency, and peer victimization as well as peer-rated aggression and sensitive-isolated reputation.

Results

Four trajectory groups of VA were identified: Low Stable, Increasing, Decreasing, and High Stable. The 3-year average occurrence of VA was: 1.31, 9.18, 10.24, and 31.14 instances, respectively. Gender-specific MANOVAs revealed dramatic differences between the High Stable and Low Stable groups. High Stable boys reported significantly more depressive symptoms, delinquency, peer overt and relational victimization, and were less likely to have a sensitive/isolated reputation than Low Stable boys. High Stable girls reported significantly more depressive symptoms, low self-esteem, delinquency, peer overt and relational victimization and were rated by peers as having more aggressive/disruptive and relationally aggressive reputations than Low Stable girls. Girls in the High Stable group were more likely than other youth to report levels of depressive symptoms and delinquency >1 SD above the mean, while boys in the High Stable group were more likely to report levels of delinquency >1 SD above the mean. The Increasing and Decreasing groups also demonstrated significantly poorer functioning than the Low Stable group on most outcomes. Growth curve analysis revealed that VA showed a contemporaneous association with self-reported delinquency suggesting these factors are closely related.

Conclusions

Any level of VA greater than the 1–2 instances per year reported by youth in the Low Stable group was associated with less favorable outcomes.  相似文献   

Mike as Teacher     

Marla Frankel 《Journal of Jewish Education》2014,80(4):451-453

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Associations between sexually experienced adolescents' sources of information about sex and sexual risk outcomes     

Molly Secor-Turner  Renee E. Sieving  Marla E. Eisenberg  Carol Skay 《Sex education》2013,13(4):489-500

The objective of this study was to describe prevalent informal sources of information about sex and examine associations between informal sources of information about sex and sexual risk outcomes among sexually experienced adolescents. Work involved the secondary analysis of data from the Minnesota Student Survey, a statewide survey to monitor priority risk and protective health behaviors. The study sample included 22,828 sexually experienced adolescents aged 13–20 years. Multivariate logistic regression analyses examined associations between adolescents' informal sources of information about sex and three sexual risk outcomes. Peers and siblings were the most commonly reported source of information about sex. Ninth-graders who reported parents or parents plus peers/siblings as a source of information about sex had significantly lower odds of having multiple sex partners in the past year. Ninth-graders who reported any informal source of information about sex had significantly lower odds of unprotected intercourse at last sex. Ninth-graders and 12th-graders who reported any informal source of information about sex had significantly lower odds of lifetime pregnancy involvement. Findings suggest information about sex from people in adolescents' everyday lives has the potential to diminish the likelihood of involvement in sexual risk behaviors. To maximize effectiveness, formal sex education programs should engage informal sources of information about sex in adolescents' everyday lives.  相似文献   

Symposium: Teaching Zionism and Israel     

Rabbi Israel Miller Chairman 《Journal of Jewish Education》2013,79(4)

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