European journal of sport science : EJSS : official journal of the European College of Sport Science
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Running-related injuries among trail runners are very common and footwear selection may modulate the injury risk. However, most previous studies were conducted in a laboratory environment. The objective of this study was to examine the effects of two contrasting footwear designs, minimalist (MIN) and maximalist shoes (MAX), on the running biomechanics of trail runners during running on a natural trail. ⋯ Strike index during uphill running was significantly greater (i.e. landing with a more anterior foot strike) when compared with level (p < 0.001, Cohen's d = 1.72) or downhill running (p < 0.001, Cohen's d = 1.44) in either MIN or MAX. The majority of habitual rearfoot strike runners switched to midfoot strike during uphill running while maintaining a rearfoot strike pattern during level or downhill running. In summary, wearing either one of the two contrasting footwear (MIN or MAX) demonstrated no effect on impact loading and footstrike pattern in habitual rearfoot strike trail runners running on a natural trail with different slopes.
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COVID-19 pandemic led many countries to implement lockdown measures. Italy declared lockdown from 9th March to 3rd May 2020, and universities shifted to online classes. Home confinement could prevent students from achieving the physical activity and sleep levels recommended for their psychophysical health, and medicine students are already known to be at risk of inactivity and reduced sleep due to their time-consuming curricula. ⋯ Before lockdown students slept less than the recommended 7 hours per night, but they increased sleep time during lockdown. Medical schools should promote education on physical activity and sleep, since it improves the health of students, doctors and patients. This is especially valuable in case of repeated lockdown.
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Overtraining, exhaustion, and burnout are widely recognized problems amongst elite athletes. The present research addresses this issue by exploring the extent to which high-quality athlete leadership is associated with elite athletes' health and burnout. Participants (120 male athletes from three top-division Australian football teams) were asked to rate the quality of each of their teammates in four different leadership roles (i.e. as task and motivational leaders on the field and as social and external leaders off the field), and also to indicate their identification with their team as well as their self-reported health and burnout. ⋯ This relationship was mediated by athletes' identification with their team, suggesting that leaders enhance athletes' health and reduce athlete burnout by creating and maintaining a sense of shared identity in their team. This, in turn, suggests that coaches can foster an optimal team environment by developing the leadership potential of their athlete leaders - in particular, their skills that foster a sense of shared team identification. This is in the interests not only of team performance but also of team members' health and burnout.
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Review
Understanding placebo and nocebo effects in the context of sport: A psychological perspective.
Research over the past 15 years on the placebo effect has substantiated its contribution to the efficacy of established treatments for a range of clinical conditions and identified its underlying mechanisms. There is also evidence that placebo effects contribute to the performance benefits of many ergogenic aids, and that performance can worsen when dummy treatments are associated with expectations of a harmful outcome (i.e. nocebo effect). ⋯ This has implications not only for research but also application, as nearly 50% of athletes report experiencing a beneficial placebo effect, and a similar proportion of coaches report providing placebos to their athletes. The objective of this paper is to attempt to stimulate research by presenting updated definitions of placebo and nocebo effects in the context of sport, describing their major mechanisms and, highlighting the importance of the psychosocial context on placebo effects in the sport setting.
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Despite the apparent strength of scientific evidence suggesting that psychological benefits result from both acute and chronic exercise, concerns remain regarding the extent to which these benefits are explained by placebo effects. Addressing these concerns is methodologically and at times conceptually challenging. ⋯ Further, compelling evidence has shown that the contribution of placebo effects and their underlying neurobiological mechanisms to treatment effects can be measured without administering a traditional placebo (e.g. inert substance) by leveraging psychological factors such as expectations and conditioning. Hence, the purpose of this focused review is to integrate lessons such as these with the current body of literature on placebo effects in psychological responses to exercise and provide recommendations for future research directions.