The effects of eccentric phase duration on concentric outcomes in the back squat and bench press in well-trained males

ABSTRACT

The velocity and magnitude in which the eccentric phase of an exercise is completed directly affects performance during the concentric phase. Therefore, the purpose of this research was to investigate the effects of eccentric phase duration on concentric outcomes at 60% and 80% of one-repetition maximum (1RM) in the squat and bench press. Sixteen college-aged, resistance-trained males completed 1RM testing, established normative eccentric durations, and performed fast (0.75 times normative) and slow (2.0 times normative) metronome-controlled eccentric duration repetitions. Outcome measures assessed during the concentric phase were: average concentric velocity (ACV), peak concentric velocity (PCV), rating of perceived exertion (RPE), range of motion (ROM), and barbell path. Eccentric duration was significantly and inversely correlated with ACV at 60% (r = ?0.408, p = 0.004) and 80% (r = ?0.477, p = 0.001) of 1RM squat. At 60% of 1RM squat, both fast and slow eccentric conditions produced greater (p < 0.001) PCV than normative duration with fast also producing greater PCV than slow (p = 0.044). Eccentric duration had no impact on RPE, ROM, or barbell path. Our results report for the first time that resistance-trained males performing a deliberately faster eccentric phase may enhance their own squat and bench press performance.     

Impressions of ICOTS II

The following short contributions are from people who attended the Second International Conference on Teaching Statistics held in Victoria, August 1986     

Diversity in language: Outdoor terminology in the Czech Republic and Britain

This paper reviews literature related to outdoor terminology as it is used within the languages of British English and Czech. It provides the background to the outdoors in the Czech Republic where terminology has adopted and adapted many English language outdoor terms. The paper analyses the differences and similarities between terms and deals with the problems associated with defining and explaining outdoor terms and translating the British English terms into Czech and vice versa. Semi structured interviews were conducted with British and Czech academic experts. The findings suggest that as the outdoor field develops there is a need for more understanding of the cultural, historical, and geographical differences between concepts and terminology used in both English and non-English speaking countries, for example, the specific indigenous nature of the Czech turistika activities.     

情迷咖喱(英文)

People used to say thatBritlsh food was boring andbland(淡而无味的).Nowadayspeople in Britain have a world offood to choose from.Travel around London and you’ll find foodfrom a round the world.You might comeacross restaurants and cafes serving ethnic     

Re-presenting the ‘forgotten estate’: participatory theatre,place and community identity

In this article, we discuss the work undertaken in the first phase of a participatory theatre project which took place on a council housing estate in the Midlands of England, in which residents were invited to share their memories for a production which would present the history of the estate. This community is often characterised as deficient, ageing, welfare-oriented, low in educational attainment and aspiration. Interviews and field notes suggest that there was not a great amount of hope within the community for the success of a participatory arts project such as this. However, the performance attracted a large number of participants who performed to full houses over five nights. Using a place-based approach, we argue that a model of open participation led to the presentation of alternative, more positive, narratives of this community as a place to live.     

Editorial Statement

It is contended that in Harvey Pegues's essay on objectivism and constructivism in the summer 2007 issue of The Educational Forum, Pegues conducted an intellectual discourse in which legitimate or good-faith disagreement was not an option, and disparaged and imputed the negative motives with which he disagreed. This article responds by pointing out the definitions and axioms used by Pegues that are vulnerable, and questions basic axioms about identity and existence from the standpoint of ancient Egyptian thought. The self-confessed nature of axioms—including those of objectivism—as incapable of proof or disproof is reiterated.     

Attitudes to middle schools

Although there is a debate about the importance of self-esteem in education, many primary teachers wish to help children who suffer from low self-esteem. However, in order to do this, we first have to identify such children. It is almost taken for granted that we can make quite accurate judgements based on the knowledge built up through day-to-day interactions with the children. This paper reports a small-scale study which looked at the match between teacher judgements of their pupils' self-esteem and the children's own self reports. The findings suggest we may not be as good at this as we would like to think.     

Teachers’ resilience and well-being: a role for educational psychology

The retention and resilience of teachers are subject to many influences. Children’s behaviour is often cited as a major source of stress for teachers and a challenge to their resilience. We suggest that an understanding of teachers’ attributions and efficacy beliefs may provide the foundations for work to support teachers. We outline findings from research that has examined teachers’ attributions for the causes of children’s misbehaviour, teachers’ beliefs in their efficacy as classroom managers of children’s behaviour as well as how, in principle, such beliefs may be supported and enhanced. We also relate these findings to those associated with educational and developmental outcomes for children. We conclude with some illustrative evidence of ways (involving consultation and other interventions) that applied psychologists have contributed to the professional well-being and resilience of teachers.