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Assumpta Ensenyat, Gemma Espigares-Tribo, Leonardo Machado-Da-Silva, Xenia Sinfreu-Bergués and Alfonso Blanco

intervention was effective in producing a small and persistent increase in MVPA. Although no group effect was observed, the proportion of responders was higher in the exercise groups than in the COU group. Likewise, the reduction in SB and the proportion of responders were clearly higher in the exercise groups

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Anna E. Mathews, Delores Pluto, Olga Ogoussan and Jorge Banda

Background:

When promoting active travel to school, it is important to consider school and district policies as well as attitudes of school and district administrators.

Methods:

School principals and district officials in South Carolina participated in the School Travel Survey. Frequency distributions and Chi-squared tests were used to analyze the data.

Results:

Three hundred fourteen persons responded to the survey (53.2% response rate). Sixty-five percent of district officials reported having a clear position about students walking to school, 80.0% of which were supportive. Seventy-two percent of principals reported having a clear position about walking to school, 67% of which were supportive. These positions were most commonly communicated either orally or through memos or other written documentation rather than through official, written policies or directives. Respondents who personally supported walking to school were more likely to believe that walking to school benefited students' health (χ2 = 8.82, df = 1, P = .003) and academic performance (χ2 = 14.87, df = 1, P < .0001).

Conclusions:

Promotion of walking to school should encourage schools and districts to develop official, written directives or policies. Promotional efforts may benefit from linking active travel to academic performance and health.

Open access

Jennifer Beck, Bernie Goldfine, Susan Whitlock, Todd Seidler and Jin Wang

Currently more than 1,000 NCAA member institutions have intercollegiate athletic programs. The athletic teams from all of these institutions must travel in order to participate in sanctioned competitions as well as some training sessions. Transportation methods vary and consist of airplanes, chartered buses, 12 and 15-passenger vans, university-owned vehicles, minibuses, and student-athlete vehicles. The purpose of this exploratory study was to determine and compare the current transportation practices of Division I, Division II, and Division III teams, in particular those transportation practices involving teams for sports which are typically non-revenue producing. A total of 120 colleges were randomly selected for this study, and 43% of these institutions responded. Results indicate that many teams are not using the safest methods to transport their athletes. Coaches are frequently called upon as drivers and 15-passenger vans are used at a high rate. Schools also failed to implement the majority of the National Transportation Safety Board (NTSB) recommendations for the transportation of student-athletes.

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Bente R. Jensen, Line Hovgaard-Hansen and Katrine L. Cappelen

Running on a lower-body positive-pressure (LBPP) treadmill allows effects of weight support on leg muscle activation to be assessed systematically, and has the potential to facilitate rehabilitation and prevent overloading. The aim was to study the effect of running with weight support on leg muscle activation and to estimate relative knee and ankle joint forces. Runners performed 6-min running sessions at 2.22 m/s and 3.33 m/s, at 100%, 80%, 60%, 40%, and 20% body weight (BW). Surface electromyography, ground reaction force, and running characteristics were measured. Relative knee and ankle joint forces were estimated. Leg muscles responded differently to unweighting during running, reflecting different relative contribution to propulsion and antigravity forces. At 20% BW, knee extensor EMGpeak decreased to 22% at 2.22 m/s and 28% at 3.33 m/s of 100% BW values. Plantar flexors decreased to 52% and 58% at 20% BW, while activity of biceps femoris muscle remained unchanged. Unweighting with LBPP reduced estimated joint force significantly although less than proportional to the degree of weight support (ankle).It was concluded that leg muscle activation adapted to the new biomechanical environment, and the effect of unweighting on estimated knee force was more pronounced than on ankle force.

Open access

Lindsey E. Eberman, Kimberly J. Bodey, Rebecca Zakrajsek, Madeline McGuire and Adam Simpson

Background:

The National Standards for Sport Coaches (2006) acknowledges that differences exist in athletes’ ability to tolerate heat. As such, Domain 2: Safety and Injury Prevention (S7-10), Domain 3: Physical Conditioning (S12-13), and Domain 7: Organization and Administration (S34) list expectations for coaches’ ability to recognize and respond to heat illness. However, only the American Red Cross of Greater Indianapolis (Domain 2 specific) and 13 programs are accredited by NCACE. Moreover, on-line trainings frequently used to educate novice interscholastic and recreational sport coaches provide only a cursory review of heat illness precautions, symptoms, and remedies.

Objective:

The purpose of this exploratory study is to identify changes in coaches’ actual and perceived knowledge after an on-line educational intervention, as well as determine whether the educational intervention will decrease the knowledge gap.

Research Design:

A pre-test/post-test design was used to identify the effect of an educational intervention on perceived and actual knowledge of sport coaches.

Participants:

Coaches (n=19; male=14, female=5) were solicited via email made available by the Indiana High School Athletic Association and the Indiana Youth Soccer Association – Olympic Development Program.

Instrumentation:

The Perceived Knowledge Questionnaire (five-item survey) and an actual knowledge assessment (two versions of 19-item quiz) were used to measure the coaches’ perceived and actual knowledge about the prevention, recognition, and treatment of exertional heat illnesses. Participants completed the “Beat the Heat: Be a Better Coach in Extreme Environmental Conditions” educational intervention.

Procedures:

Coaches completed the on-line educational module including pre-test and post-tests evaluations of actual and perceived knowledge.

Statistical Analysis:

Researchers performed three separate paired t-tests to identify the effect of the educational intervention on the dependent variables: actual knowledge, perceived knowledge, and knowledge gap. Significance was set a-prior at p<0.05.

Results:

Participants demonstrated a significant 18.1% improvement (t18=-4.877, p<0.001, ES=0.62) in actual knowledge scores. Perceived knowledge also significantly improved (t18=-2.585, p=0.019, ES=0.25). Knowledge gap, the difference between actual knowledge and perceived knowledge, became significantly smaller (t18=4.850, p<0.001, ES=0.63).

Conclusions:

Results indicate the on-line educational intervention improved actual knowledge, perceived knowledge, and decreased the knowledge gap. Additional large scale study of this intervention is warranted.

Open access

David Pyne

conditions. Novel application of counterbalanced designs has been proposed in clinical research where repeated measures are employed through the elegant use of a crossover to test the implementation strategy. 2 The notion of individual responders to exercise and training interventions is self-evident to

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Yang Liu, Yan Tang, Zhen-Bo Cao, Jie Zhuang, Zheng Zhu, Xue-Ping Wu, Li-Juan Wang, Yu-Jun Cai, Jia-Lin Zhang and Pei-Jie Chen

children (aged 9-17 years) Responded ‘very often’ for at least two items for parents’ support, and responded ‘very right’ for at least two items for friends support for PA. School D+ 37.5% of responses met the benchmark regarding schools: 1) the principal’s concern about PA, exercise and physical education

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Aaron J. Coutts

perceived trustworthiness of research. I also examine how COIs might occur and the influence of these COIs, and then provide some directions for how authors and reviewers should respond to a COI. A COI can be described as a circumstance—or set of circumstances—where professional interests are excessively

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Hiroshi Takasaki, Yu Okubo and Shun Okuyama

  1 summarizes the 9 studies. Two studies were published in Japanese, while the others were in English. Table 1 Summary of the 9 Studies Analyzed in This Review Study/corresponding author responded or not (including not contactable) Design Participants Interventions relevant to this review Measures

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Jörg Krieger, Lindsay Parks Pieper and Ian Ritchie

to perceived problems in their specific sports, international federations often act before the IOC, consequently influencing the ways in which Olympic governors eventually respond. For example, when the International Association of Athletics Federations (IAAF; since 2019 called World Athletics