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Jérôme Vaulerin, Frédéric Chorin, Mélanie Emile, Fabienne d’Arripe-Longueville and Serge S. Colson

, having unstable ankles or previous ankle sprains did not significantly predict the ankle sprains that occurred in the present prospective study. Nevertheless, due to the limited cost and time effectiveness of chronic ankle instability and history of ankle sprain screening, these factors should be

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Susumu S. Sawada, I-Min Lee, Hisashi Naito, Koji Tsukamoto, Takashi Muto and Steven N. Blair

Background:

Limited data are available on the relationship between muscular and performance fitness (MPF) and the incidence of type 2 diabetes.

Methods:

A cohort of 3792 Japanese men completed a medical examination that included MPF and cardiorespiratory fitness tests. MPF index composite score was calculated using Z-scores from vertical jump, sit-ups, side step, and functional reach tests.

Results:

The mean follow-up period was 187 months (15.6 years). There were 240 patients who developed type 2 diabetes during follow-up. Relative risks and 95% confidence intervals (CI) for incidence of diabetes across baseline quartiles of MPF index composite score were obtained using the Cox proportional hazards model while adjusting for age, BMI, diastolic blood pressure, cigarette smoking, alcohol intake, and family history of diabetes. The relative risks for developing diabetes across quartiles of MPF index composite scores (lowest to highest) were 1.0 (referent), 1.15 (95% CI 0.83−1.60), 1.10 (0.78−1.55), and 0.57 (0.37−0.90) (P for trend = .061). These results were attenuated after adjustment for cardiorespiratory fitness (P for trend = .125).

Conclusions:

This prospective study suggests that MPF is a predictor of type 2 diabetes, although its predictive ability was attenuated after adjusting for cardiorespiratory fitness.

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Jakob Tarp, Anna Bugge, Niels Christian Møller, Heidi Klakk, Christina Trifonov Rexen, Anders Grøntved and Niels Wedderkopp

with body weight, some associations were lost. Five different approaches to model out the potential confounding effect of body weight were employed in as many prospective studies 12 , 13 , 31 , 32 , 37 limiting comparability between the studies. The potential for evidence synthesis is thus reduced

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Richard Johnston, Roisin Cahalan, Laura Bonnett, Matthew Maguire, Alan Nevill, Philip Glasgow, Kieran O’Sullivan and Thomas Comyns

characteristics, and IP risk. 14 A recent systematic review of ESPs 6 has identified nonmodifiable baseline characteristics (ie, increased age, history of previous IP), that are associated with increased IP risk. The aim of this prospective study was to determine the association between TL factors including

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Javier Raya-González, Luis Suárez-Arrones, Archit Navandar, Carlos Balsalobre-Fernández and Eduardo Sáez de Villarreal

risk based assessment process . Br J Sports Med . 2002 ; 36 ( 6 ): 446 – 451 . PubMed ID: 12453840 doi: 10.1136/bjsm.36.6.446 12453840 4. Hägglund M , Waldén M , Ekstrand J . Injury incidence and distribution in elite football—a prospective study of the Danish and the Swedish top divisions

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Andrew P. Hill, Joachim Stoeber, Anna Brown and Paul R. Appleton

Perfectionism is a personality characteristic that has been found to predict sports performance in athletes. To date, however, research has exclusively examined this relationship at an individual level (i.e., athletes’ perfectionism predicting their personal performance). The current study extends this research to team sports by examining whether, when manifested at the team level, perfectionism predicts team performance. A sample of 231 competitive rowers from 36 boats completed measures of self-oriented, team-oriented, and team-prescribed perfectionism before competing against one another in a 4-day rowing competition. Strong within-boat similarities in the levels of team members’ team-oriented perfectionism supported the existence of collective team-oriented perfectionism at the boat level. Two-level latent growth curve modeling of day-by-day boat performance showed that team-oriented perfectionism positively predicted the position of the boat in midcompetition and the linear improvement in position. The findings suggest that imposing perfectionistic standards on team members may drive teams to greater levels of performance.

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Nikos Ntoumanis, Vassilis Barkoukis, Daniel F. Gucciardi and Derwin King Chung Chan

We brought together various lines of work on motivation, morality, and doping by testing a theory-based model prospectively linking contextual and personal motivational variables, moral attitudes, moral disengagement in doping, doping intentions, and doping use. Participants were 257 Greek athletes who completed a questionnaire pack at the beginning of a sport season. In the case of doping use, we also obtained data close to the end of the same season. The model showed that perceptions of controlling coach behaviors predicted athlete need frustration, which in turn predicted low moral functioning and doping intentions/doping use. The findings highlight pathways (direct and indirect) by which the social environment may impact on athletes’ intentions and decisions to engage in doping and could pave the way for future antidoping interventions aimed at improving coaching interpersonal style.

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Joey Lightner, Brandon C. Irwin and Matthew Chrisman

Background: Social relationships are among the strongest predictors of health. The extent to which one is embedded in social networks, also referred to as social integration, has been associated with physical activity in short-term longitudinal and cross-sectional studies. How changes in social integration impact physical activity over longer periods of time is not well understood. Methods: Longitudinal data from 5 waves of the Americans’ Changing Lives study were used (wave 1: n = 3617; wave 5: n = 1427). Data were modeled using latent growth curves to understand the trajectories of social integration and physical activity, separately. Latent interlocking growth curve methods were used to understand if and how changes in social integration predicted changes in physical activity. Results: Physical activity did not change over the 25-year period (P = .68). Social integration significantly decreased (P = .025). Changes in social integration predicted changes in physical activity (β = 0.12, P < .05). Conclusions: Changes in how often adults speak to family and friends predict changes in physical activity across a 25-year period. Group- and social network–focused physical activity research, advocacy, and interventions are warranted.

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Jaap Swanenburg, Anne Gabrielle Mittaz Hager, Arian Nevzati and Andreas Klipstein

The purpose of this prospective cohort study was to determine whether the maximal width of the base of support (BSW) measure is able to predict the risk of multiple falls in community-dwelling women. Thirty-eight community-dwelling women (mean age of 72 ± 8 years old) participated. Falls were prospectively recorded during the following year. Overall, 29 falls were recorded; six (16%) women were multiple fallers and 32 (84%) were nonfallers. There was a significant difference in the BSW between the fallers and nonfallers (F[1, 37] = 5.134 [p = .030]). A logistic regression analysis indicated a significant contribution of the BSW test to the model (odds ratio = 0.637; 95% CI [0.407, 0.993]; p = .046 per 1 cm).The cut-off score was determined to be 27.8 cm (67% sensitivity and 84% specifcity). These results indicate that women with a smaller BSW at baseline had a significantly higher risk of sustaining a fall.

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Pedro C. Hallal, Jeovany Martínez-Mesa, Carolina V.N. Coll, Grégore I. Mielke, Márcio A. Mendes, Márcio B. Peixoto, Tiago N. Munhoz, Virgilio V. Ramires, Maria Cecilia Assunção, Helen Gonçalves and Ana M. B. Menezes

Aim:

To evaluate the longitudinal association between physical activity behavior at 11 years of age and the incidence of mental health problems from 11 to 15 years of age.

Methods:

Individuals born in the city of Pelotas, Brazil, in 1993 have been followed up since birth. At 11 and 15 years of age, mental health was assessed using the Strengths and Difficulties Questionnaire (SDQ). At 11 years of age, physical activity was assessed through a validated questionnaire. The continuous SDQ score at 15 years was used as the outcome variable. The main exposure was physical activity behavior at 11 years of age divided into 3 categories (0, 1−299, >300 min/wk).

Results:

The incidence of mental health problems from 11 to 15 years was 13.6% (95% CI, 12.4−14.9). At 11 years, 35.2% of the adolescents achieved 300 min/wk of physical activity. In the unadjusted analysis, physical activity was inversely related to mental health problems (P = .04). After adjustment for confounders, the association was no longer significant in the whole sample but was still significant among boys.

Conclusion:

Physical activity appears to be inversely related to mental health problems in adolescence, but the magnitude of the association is weak to moderate.