Match analysis and heart rate of futsal players during competition

Heart rates were monitored and time-motion analysis performed for 10 players (mean age 25.6 years, s = 2.5; body mass 73.8 kg, s = 5.7 kg; height 1.75 m, s = 0.06) during four competitive futsal matches. Mean heart rate during the match was 90% (s = 2) of maximum heart rate. Heart rate records were classified based on the percentage of time spent in three zones (>85%, 85-65%, and <65% maximum heart rate); players spent 83%, 16%, and 0.3% in these three zones, respectively. During the second period, there was a significant reduction (P < 0.01) in the percentage of time spent at an intensity above 85% of maximum heart rate (first vs. second period: 86% vs. 79%). Players' movements were classified as standing, walking, jogging, medium-intensity running, high-intensity running, and sprinting (maximal speed running). Time-motion analysis indicated that the mean distance covered per minute of play was 117.3 m (s = 11.6), of which 28.5% (s = 2.2) was covered while performing medium-intensity running, 13.7% (s = 2) during high-intensity running, and 8.9% (s=3.4) while sprinting. From the results, we conclude that futsal is a multiple-sprints sport in which there are more high-intensity phases than in soccer and other intermittent sports.     

Vader-Mccormick,Nancy (2011). the Engaged Teacher: What Works with Today's Students.

Community colleges have responded to the increased use of technology for instruction by providing support and professional development opportunities for faculty. However, differences in perceptions, expectations, and opportunities exist between full-time faculty at community colleges and their adjunct colleagues when it comes to adopting technology into instruction. Because adjunct faculty represent 68.5% of faculty teaching at community colleges (U.S. Department of Education, 2007 U.S. Department of Education . ( 2007 ). National Center for Education Statistics, 2007 Integrated Postsecondary Education Data System (IPEDS), Winter 2007–08. Retrieved from http://nces.ed.gov/programs/digest/d09/index.asp  [Google Scholar]), it is imperative to understand their intentions to integrate technology into instruction. This study adopted the Decomposed Theory of Planned Behavior (DTPB) as a theoretical framework to survey 130 community college adjunct faculty member's intentions to participate in technology integration. Multiple regression analyses were used to analyze the data collected. Results showed that DTPB was useful in explaining much of the variance in the intention to integrate technology into teaching by community college adjunct faculty. Results also suggested that community college administrators can play an important role toward increasing technology integration by adjunct faculty through leveraging types of influence in support of behavioral intention. Research implications for instructional technologists at community colleges indicated that professional development programs should be designed based on the significant predictors in the DTPB.     

CULTURALLY SITUATED EXPLORATIONS OF CHILD DEVELOPMENT: A HOME VISIT PROJECT FOR PROSPECTIVE EARL Y CHILDHOOD TEACHERS

As part of a child development course in an undergradute early childhood teacher preparation program, students completed a home visit project with a family of a culture other than their own. This report examines the assignment's effectiveness in helping students become aware of the cultural nature of human development and the role of the family in the child's growth and development. Student responses obtained through focus groups, papers, field notes, and course evaluations included 1) reflections on the nature of the experience; 2) reactions to the role of researcher in the home of relative strangers and 3) evaluation of the learning. Although students seem to have achieved some understanding of the role of family and culture, the further step of recognizing culture as fundamental to development was generally not an outcome of the present intervention.     

Love is all you need: A content analysis of romantic scenes in Chinese entertainment television

A large sample of entertainment television programs that were aired on 28 channels in China in 2004 was analyzed for romantic and sexual content. Romantic scenes, typically portraying men and women already in committed relationships, appeared in 80% of the 196 programs analyzed. The analysis suggested that, according to Chinese television in the early part of the twenty-first century, emotional love was more important than physical sexual interaction in romantic relationships. More than half of the 1112 romantic scenes analyzed depicted love between the partners without any discussion or display of physical sexual behavior. Only 8% of scenes included discussion or depiction of sexual behavior (e.g., touching, kissing, and intercourse) without some sense that the partners were in a loving, committed relationship. Sexual intercourse was implied or depicted in fewer than 2% of the romantic scenes. Findings are discussed in light of the Chinese government's periodic regulation of sexually suggestive media content and attempts to filter Internet content. The extent to which such content may affect young viewers' perceptions of romantic relationships and sexual behavior is also discussed.     

The asymmetry of pectoralis muscles is greater in male prepubertal than in professional tennis players

It is generally accepted that preadolescents have a limited capacity to develop muscle hypertrophy in response to exercise compared with older populations; however, studies are scarce and conflicting. The main aim of the present study was to assess if playing tennis is associated with the hypertrophy of dominant pectoralis muscles (PM) in professional (PRO) and in prepubescent tennis players (PRE). A secondary aim was to assess if the degree of asymmetry of PM is greater in PRO than PRE. The volume of PM of both sides was determined using magnetic resonance imaging in 8 male PRO (21.9 years), 6 male PRE (11 years, Tanner 1–2) and 12 male non-active controls (6 adults: 23.5 years; and 6 prepubescents: 10.7 years, Tanner 1–2). PRO and PRE had 15 and 30% greater volume, respectively, in the dominant than in the contralateral PM (P?P?=?.34 in adults and 5%, P?=?.17 in children). The degree of side-to-side asymmetry in PM volume was greater in PRE than in PRO (P?相似文献   

Exploring the nature of associations between educators’ knowledge and their emergent literacy classroom practices

Reading and Writing - Educators’ content knowledge is considered a key determinant of classroom practices and thus children’s learning. In this study, we examine the nature of...     

Reward devaluation disrupts latent inhibition in fear conditioning

Three experiments explored the link between reward shifts and latent inhibition (LI). Using consummatory procedures, rewards were either downshifted from 32% to 4% sucrose (Experiments 1–2), or upshifted from 4% to 32% sucrose (Experiment 3). In both cases, appropriate unshifted controls were also included. LI was implemented in terms of fear conditioning involving a single tone-shock pairing after extensive tone-only preexposure. Nonpreexposed controls were also included. Experiment 1 demonstrated a typical LI effect (i.e., disruption of fear conditioning after preexposure to the tone) in animals previously exposed only to 4% sucrose. However, the LI effect was eliminated by preexposure to a 32%-to-4% sucrose devaluation. Experiment 2 replicated this effect when the LI protocol was administered immediately after the reward devaluation event. However, LI was restored when preexposure was administered after a 60-min retention interval. Finally, Experiment 3 showed that a reward upshift did not affect LI. These results point to a significant role of negative emotion related to reward devaluation in the enhancement of stimulus processing despite extensive nonreinforced preexposure experience.