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111.
The purpose of this study was to examine the relationship between the upper limb anthropometric dimensions and a history of dominant upper limb injury in tennis players. Dominant and non-dominant wrist, forearm, elbow and arm circumferences, along with a history of dominant upper limb injuries, were assessed in 147 male and female players, assigned to four groups based on location of injury: wrist (n = 9), elbow (n = 25), shoulder (n = 14) and healthy players (n = 99). From anthropometric dimensions, bilateral differences in circumferences and in proportions were calculated. The wrist group presented a significant bilateral difference in arm circumference, and asymmetrical bilateral proportions between wrist and forearm, as well as between elbow and arm, compared to the healthy group (6.6 ± 3.1% vs. 4.9 ± 4.0%, P < 0.01; ?3.6 ± 3.0% vs. ?0.9 ± 2.9%, P < 0.05; and ?2.2 ± 2.2% vs. 0.1 ± 3.4%, P < 0.05, respectively). The elbow group displayed asymmetrical bilateral proportions between forearm and arm compared to the healthy group (?0.4 ± 4.3% vs. 1.5 ± 4.0%, P < 0.01). The shoulder group showed significant bilateral difference in elbow circumference, and asymmetrical bilateral proportions between forearm and elbow when compared to the healthy group (5.8 ± 4.7% vs. 3.1 ± 4.8%, P < 0.05 and ?1.7 ± 4.5% vs. 1.4 ± 4.3%, P < 0.01, respectively). These findings suggest that players with a history of injury at the upper limb joint present altered dominant upper limb proportions in comparison with the non-dominant side, and such asymmetrical proportions would appear to be specific to the location of injury. Further studies are needed to confirm the link between location of tennis injury and asymmetry in upper limb proportions using high-tech measurements in symptomatic tennis players.  相似文献   
112.
This paper traces the trajectory of New Labour education policy since the formation of the first New Labour government in 1997. During that time the policy discourse has moved from a position of individualized school improvement through competition, to one where there is an emphasis on ‘partnership’ and ‘collaboration’ as key mechanisms for improvement. We note, however, that ‘specialism’, ‘diversity’ and ‘choice’ are still key components of policy and that ‘partnership’ often denotes a deficit model, with more successful schools supporting (or in some cases taking over) less successful ones. Although there are the beginnings of a recognition that social class and social deprivation are factors which make achievement at school more problematic, generally New Labour policy has not attempted to alleviate the tendency to social polarization which has emerged as a result of school choice policies.  相似文献   
113.
The effect of the Programed Math Tutorial-programed tutoring in mathematics-on achievement of kindergarten and first grade children was investigated in three field studies. In one, 140 first-graders were tutored; in the second, 136 first-graders were tutored; in the third, 32 kindergarten children were tutored. After a full year of tutoring as a supplement to regular classroom instruction, achievement posttests were administered to these groups and to comparable groups of untutored children. Significant differences favoring the Programed Math Tutorial groups were found in all three field studies.  相似文献   
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