The aim of this study was to assess the link between elite athletes' motivational profiles and burnout using a person-centered approach. Participants were 391 Spanish elite athletes (201 males and ...190 females), aged 16–30 years who completed questionnaires measuring demographic information, self-determined motivation, and athlete burnout. Latent profile analysis resulted in a five profile solution labeled: amotivation (Class 1), low motivation (Class 2), moderately autonomous motivation (Class 3), amotivated and moderately controlled motivation (Class 4), and highly motivated (Class 5). While no significant differences were found in emotional/physical exhaustion, Class 4 (amotivated and moderately controlled motivation) scored higher than classes 2 (low motivation), 3 (moderately autonomous motivation), and 5 (highly motivated) on a Reduced sense of Accomplishment and Sport Devaluation. Findings are discussed in relation to Self-Determination Theory, suggesting that the quality of one's motivation may be equally, if not more important than the quantity of motivation in determining subsequent health, well-being, and performance outcomes.
•The findings indicate that elite level athletes may have high levels of both autonomous and controlled motivation.•The high autonomous and controlled motivation had the lowest scores on reduced sense of accomplishment and sport devaluation.•The quality of one's motivation may be equally, if not more important than the quantity of motivation in subsequent health and performance.
Written at a time when new ways of knowing, relating and responding to the environment appear more urgent than ever, this paper explores the potential of using new materialist theory for ...more-than-human understandings of sport and the environment. The paper consists of three parts. We begin by reviewing key trends in research on sport and the environment, before signaling the recent turn towards new materialist ontological principles to explore the intra-actions between sport, physical leisure and the natural environment. We then turn specifically to feminist new materialisms to examine the important contributions such theoretical strands offer for rethinking human and nonhuman entanglements with the environment. In the third and final part we take inspiration from feminist new materialisms to propose a research imaginary aimed towards opening new 'lines of flight' in sport and environment research, praxis and pedagogies, particularly in relation to: (i) methods, (ii) modes of representation, (iii) ethical understandings, and (iv) teaching tools. In so doing, we hope this paper encourages others to explore how feminist new materialist approaches might enable new noticings, vital respondings, and thus feminist ethics and response-abilities to (and with) the environments that our sporting and movement practices are already entangled.
The drop vertical jump (DVJ) is commonly used in return-to-play evaluations to assess movement quality and risk during a dynamic task. However, across biomechanics literature, a multitude of DVJ ...variations have been used, influencing the generalizability and potential interpretation of the reported findings.
The purpose of this study was to identify differences in lower extremity kinematics and kinetics between DVJ variations that differ based on horizontal jump distance, verbal instructions, and the use of a jump target.
A single-group repeated measures design was used in a laboratory setting. Twenty participants were tested, and three-dimensional angles and moments of the pelvis, hip, knee, and ankle were computed. Wilcoxon signed rank tests were performed to determine differences between DVJ variations.
Reduced knee flexion at initial contact and greater knee extensor moments across the descent phase were observed with increased horizontal jump distance. Additionally, both verbal instructions and a jump target influenced movement strategies at the pelvis, hip, and knee. Ground reaction forces were found to be similar across conditions and jump height following the first landing increased with a target.
Although subtle, the biomechanical differences observed between task variations emphasize the importance of standardizing motion analysis protocols for research and clinical decision-making. Given the findings of the current study, the authors recommend using the Half Height variation in patients treated for a knee injury as it will likely be the most indicative of movement quality.
It seems that dehydration may impair decision-making performance in athletes. Purpose: This study aimed to investigate the influence of dehydration on passing decision-making performance in soccer ...players. Method: Participants were 40 male soccer players (M
age
= 22.3 ± 2.3 years) who agreed to participate in the study and were randomly assigned to the following conditions: control (CON), dehydration (DEH), and euhydration (EUH). The players played in 2 games of 90 min in duration (2 45-min halves) followed by 2 15-min halves (overtime) with and without proper hydration. The Game Performance Assessment Instrument (GPAI) was considered for the analysis of passing decision making. Results: The GPAI analysis indicated effective reduction in the decision-making index in the DEH condition compared with the EUH and CON conditions, F(2, 38) = 31.4, p < .05, ES = 0.8. Conclusions: In conclusion, dehydration may be considered a mediating factor in the passing decision-making performance of male soccer athletes.
This scoping review explored the associations between physical activity, sport, and body image.
Scoping review.
The studies were identified and selected using broad search criteria using MEDLINE, ...EMBASE, and PsycINFO via Ovid and CINAHL, Gender Studies and Sport Discus via EBSCO, from January 1, 2008 up to May 15, 2018 for English peer-reviewed publications. A rigorous evaluation following specific exclusion criteria ensued and 210 publications (182 quantitative, 26 qualitative, and 2 mixed-methods studies) were indexed and summarized using frequency counts.
The studies were focused exclusively on sport (14.8%) or physical activity (defined as structured or leisure; 85.2%). The majority of the quantitative studies (58.2%) focused on the relationship between physical activity or sport and body image whereas 41.8% explored how body image was either a protective factor or deterrent for physical activity or sport participation. Four qualitative studies specifically examined the intersection of physical activity or sport and body image experiences. Based on the frequency of reported findings in the journal articles, participation in physical activity and sport was related to less negative and more positive body image. Negative body image was linked to lower physical activity and sport participation and was discussed qualitatively as a barrier to participation. Positive body image was associated with greater participation in physical activity and sport. There was no empirical focus on the bi-directional and reciprocal associations between physical activity or sport and body image, thus precluding any causal conclusions.
Future research is needed using integrative conceptual frameworks and research designs that emphasize and delineate the causal, bi-directional, and reciprocal associations between body image and physical activity and sport behaviors.
•210 publications met inclusion criteria exploring physical activity, sport, and body image.•The bi-directional association between physical activity or sport and body image was not tested.•Few studies were founded on theoretical frameworks.•Relatively equal focus on positive and negative body image constructs across studies.•Heterogeneity in measures precludes conclusions on association between physical activity and sport and body image.
The role of sex stereotypes and gender roles in the sex differences observed in sport and exercise has been extensively investigated in sport psychology, past studies showing that stereotypes are ...internalized into the self during the socialization process. Although this research has provided clear evidence of the psychosocial roots of sex differences in athletics, focusing exclusively on an internalization explanation may not allow a complete understanding of the influence of stereotypes in this domain. This article presents two approaches that have been developed in mainstream psychology and discusses their relevance in sport psychology: (1) the situational approach, which considers that the mere presence of stereotypes in the environment is sufficient to affect individuals (e.g., stereotype threat theory); (2) the content of stereotypes approach (e.g., stereotype content model), which suggests that stereotypes about a particular group may be ambivalent, and that this ambivalence may serve to legitimize the status quo.
► This article reviews studies on stereotypes and gender roles in sport and exercise. ► Past studies are mostly based on the models of Bem (1981) and Eccles et al. (1983). ► We argue that other models of stereotypes would be relevant in sport. ► Two perspectives are proposed: the situational and stereotype content approaches.
Following critical evaluation of the available literature to date, The International Society of Sports Nutrition (ISSN) position regarding caffeine intake is as follows: 1. Supplementation with ...caffeine has been shown to acutely enhance various aspects of exercise performance in many but not all studies. Small to moderate benefits of caffeine use include, but are not limited to: muscular endurance, movement velocity and muscular strength, sprinting, jumping, and throwing performance, as well as a wide range of aerobic and anaerobic sport-specific actions. 2. Aerobic endurance appears to be the form of exercise with the most consistent moderate-to-large benefits from caffeine use, although the magnitude of its effects differs between individuals. 3. Caffeine has consistently been shown to improve exercise performance when consumed in doses of 3-6 mg/kg body mass. Minimal effective doses of caffeine currently remain unclear but they may be as low as 2 mg/kg body mass. Very high doses of caffeine (e.g. 9 mg/kg) are associated with a high incidence of side-effects and do not seem to be required to elicit an ergogenic effect. 4. The most commonly used timing of caffeine supplementation is 60 min pre-exercise. Optimal timing of caffeine ingestion likely depends on the source of caffeine. For example, as compared to caffeine capsules, caffeine chewing gums may require a shorter waiting time from consumption to the start of the exercise session. 5. Caffeine appears to improve physical performance in both trained and untrained individuals. 6. Inter-individual differences in sport and exercise performance as well as adverse effects on sleep or feelings of anxiety following caffeine ingestion may be attributed to genetic variation associated with caffeine metabolism, and physical and psychological response. Other factors such as habitual caffeine intake also may play a role in between-individual response variation. 7. Caffeine has been shown to be ergogenic for cognitive function, including attention and vigilance, in most individuals. 8. Caffeine may improve cognitive and physical performance in some individuals under conditions of sleep deprivation. 9. The use of caffeine in conjunction with endurance exercise in the heat and at altitude is well supported when dosages range from 3 to 6 mg/kg and 4-6 mg/kg, respectively. 10. Alternative sources of caffeine such as caffeinated chewing gum, mouth rinses, energy gels and chews have been shown to improve performance, primarily in aerobic exercise. 11. Energy drinks and pre-workout supplements containing caffeine have been demonstrated to enhance both anaerobic and aerobic performance.
Purpose
To analyse 1000 consecutive patients, treated with isolated or combined posterior cruciate ligament (PCL) reconstruction in a single centre according to the epidemiological factors and ...differences in injury patterns depending on the activity during trauma.
Methods
Between 2004 and 2019, one thousand isolated and combined PCL reconstructions were performed. The medical charts and surgical reports of all patients were analysed regarding epidemiological factors. The PCL lesions were divided into isolated and combined lesions with at least one additional ligamentous injury. The influence of activity during accident and additional injury on the presence of isolated or combined lesions and injury patterns was calculated.
Results
In 388 patients (38.8%), sporting activity was the main activity in PCL lesions, followed by traffic accidents in 350 patients (35.0%). Combined injuries were present in 227 patients (58.5%) with sports injuries and 251 patients (71.7%) with traffic accidents. Only during handball, an isolated PCL lesion (69.1%) was more common than a combined lesion. Highest rate of combined lesions was present in car accidents (91.7%). In all activities except skiing and biking, the most common additional peripheral injury was a tear of the posterolateral corner. In skiing and biking accidents, the most common additional peripheral lesion was a lesion of the medial collateral ligament. In patients with PCL lesion and additional fracture of the same lower extremity, a combined lesion was more common than an isolated lesion (
p
= 0.001).
Conclusion
Combined PCL lesions are more common than isolated lesions, even in sports injuries (except handball). Incidence and injury pattern vary depending on activity during trauma. Main additional peripheral lesion is a lesion of the posterolateral corner, except biking and skiing accidents where a medial lesion is more common.
Level of evidence
Level III.
This study employs descriptive and regression analyses of the National Sports and Society Survey (N = 3,993) to examine the patterns and implications of sexual stigma and prejudice in sports contexts ...by focusing on U.S. adults' reports of sports-related mistreatment and involvement. Results indicate that about 1/3 of adults perceive sports as unwelcoming to LGBT athletes and nearly 40% report experiencing sports-related mistreatment; adults who identify as a sexual minority are particularly likely to perceive sports as unwelcoming and to report personal mistreatment. They are also less likely than self-identified heterosexuals to play, spectate, and talk about sports; sports-related mistreatment and childhood sports histories do not explain these patterns. Overall, the findings suggest that more action is needed to offset the presence and influence of sexual stigma and prejudice and to provide more welcoming sports environments for all.
It is widely believed that an active cool-down is more effective for promoting post-exercise recovery than a passive cool-down involving no activity. However, research on this topic has never been ...synthesized and it therefore remains largely unknown whether this belief is correct. This review compares the effects of various types of active cool-downs with passive cool-downs on sports performance, injuries, long-term adaptive responses, and psychophysiological markers of post-exercise recovery. An active cool-down is largely ineffective with respect to enhancing same-day and next-day(s) sports performance, but some beneficial effects on next-day(s) performance have been reported. Active cool-downs do not appear to prevent injuries, and preliminary evidence suggests that performing an active cool-down on a regular basis does not attenuate the long-term adaptive response. Active cool-downs accelerate recovery of lactate in blood, but not necessarily in muscle tissue. Performing active cool-downs may partially prevent immune system depression and promote faster recovery of the cardiovascular and respiratory systems. However, it is unknown whether this reduces the likelihood of post-exercise illnesses, syncope, and cardiovascular complications. Most evidence indicates that active cool-downs do not significantly reduce muscle soreness, or improve the recovery of indirect markers of muscle damage, neuromuscular contractile properties, musculotendinous stiffness, range of motion, systemic hormonal concentrations, or measures of psychological recovery. It can also interfere with muscle glycogen resynthesis. In summary, based on the empirical evidence currently available, active cool-downs are largely ineffective for improving most psychophysiological markers of post-exercise recovery, but may nevertheless offer some benefits compared with a passive cool-down.
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