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121.
Although sport management researchers concur with one another regarding the significance of interaction between employees and consumers in shaping the consumers’ attitudes and behaviors, the vast majority of previous studies are largely isolated such that they take assessment exclusively from one side of the dyad—either employees or consumers. The authors seek to advance the current body of knowledge by utilizing a dyadic method that includes judgments provided by employees as well as one of each employee’s consumers in a high-contact sport service context (i.e., multi-purpose fitness centers). As such, the authors investigate how employee citizenship behavior and deviance behavior influence consumer citizenship behavior and participative behavior through consumers’ perceived service quality and satisfaction with employees. The results indicated that employee citizenship behavior positively and deviance behavior negatively shaped consumers’ perceptions of service quality, whereas the negative moderating effect of employee deviance behavior between employee citizenship behavior and service quality was not supported. Satisfaction with employees significantly mediated the relationship between service quality and consumer citizenship behavior but not between service quality and consumer participative behavior. Theoretical, methodological, and practical implications derived from this study are discussed. 相似文献
122.
Morten Renslo Sandvik Anders Bakken Sigmund Loland 《European Journal of Sport Science》2018,18(6):903-910
This paper surveys the prevalence and correlates of anabolic androgenic steroids (AAS) use among Norwegian adolescents, and examines the degree to which sports participation is a mediating or moderating factor to well-known correlations between AAS use and problem behaviour. The data come from the “Ungdata” study, a cross-national youth survey system offered to all municipalities in Norway (response rate: 74%, N?=?77,572). The study demonstrates a lifetime prevalence of AAS use of 1.27% and a higher prevalence among boys (1.81%) than girls (0.76%). The analyses show that AAS use is clearly related to problem behaviour such as violence and other substance use. When controlling for problem behaviour, there are no correlations between AAS use and exercising in a sports club or on one’s own, whilst there is a weak positive correlation between AAS use and exercising in a gym or engaging in other forms of physical exercise such as dancing or martial arts. These patterns are more or less the same for boys and for girls. We conclude that adolescent AAS use is a low-prevalence phenomenon that primarily takes place in smaller subgroups of individuals who engage in other forms of problem behaviour as well. 相似文献
123.
《European Journal of Sport Science》2013,13(8):671-680
AbstractWe sought to examine whether the relationship between recovery–stress factors and performance would differ at the beginning (Stage 1) and the end (Final Stage) of a multi-stage cycling competition. Sixty-seven cyclists with a mean age of 21.90 years (SD?=?1.60) and extensive international experience participated in the study. The cyclists responded to the Recovery–Stress Questionnaire for Athletes (RESTQ-Sport) and rated their performance (1?=?extremely poor to 10?=?excellent) in respect to the first and last stage. Two step-down multiple regression models were used to estimate the relationship among recovery (nine factors; e.g. Physical Recovery, Sleep Quality) and stress factors (10 factors; e.g. Lack of Energy, Physical Complaints), as assessed by the RESTQ-Sport and in relation to performance. Model 1 pertained to Stage 1, whereas Model 2 used data from the Final Stage. The final Model 1 revealed that Physical Recovery (β?=?.46, p?=?.01), Injury (β?=??.31, p?=?.01) and General Well-being (β?=??.26, p?=?.04) predicted performance in Stage 1 (R2?=?.21). The final Model 2 revealed a different relationship between recovery–stress factors and performance. Specifically, being a climber (β?=?.28, p?=?.01), Conflicts/Pressure (β?=?.33, p?=?.01), and Lack of Energy (β?=??.37, p?=?.01) were associated with performance at the Final Stage (R2?=?.19). Collectively, these results suggest that the relationship among recovery and stress factors changes greatly over a relatively short period of time, and dynamically influences performance in multi-stage competitions. 相似文献
124.
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126.
Eleftherios Kellis Fotini Arambatzi Christos Papadopoulos 《Journal of sports sciences》2013,31(10):1045-1055
The purpose of this study was to examine the effects of external load on vertical ground reaction force, and linear and angular kinematics, during squats. Eight males aged 22.1?±?0.8 years performed maximal concentric squats using loads ranging from 7 to 70% of one-repetition maximum on a force plate while linear barbell velocity and the angular kinematics of the hip, knee and ankle were recorded. Maximum, average and angle-specific values were recorded. The ground reaction force ranged from 1.67?±?0.20 to 3.21?±?0.29 times body weight and increased significantly as external load increased (P?<?0.05). Bar linear velocity ranged from 0.54?±?0.11 to 2.50?±?0.50?m?·?s?1 and decreased significantly with increasing external load (P?<?0.05). Hip, knee and ankle angles at maximum ground reaction force were affected by external load (P?<?0.05). The force?–?barbell velocity curves were fitted using linear models with coefficients (r 2) ranging from 0.59 to 0.96. The results suggest that maximal force exertion during squat exercises is not achieved at the same position of the lower body as external load is increased. In contrast, joint velocity coordination does not change as load is increased. The force?–?velocity relationship was linear and independent from the set of data used for its determination. 相似文献
127.
ABSTRACTThis study aimed to investigate the influence of foot strike patterns on the behaviour of the triceps surae muscle-tendon unit, including the Achilles tendon whose length nearly corresponds to force of the triceps surae, and the medial gastrocnemius muscle (MG) during running. Seven male volunteers ran with forefoot and rearfoot strikes at 10, 14 and 18 km h?1 on a treadmill. The MG fascicle length was measured using ultrasonography. The in vivo length of the curved Achilles tendon was quantified by combining ultrasonography with optical motion capture of reflective markers on the right lower limb and an ultrasound probe. The forefoot strike resulted in a significantly shorter MG fascicle length at the initial contact, at Achilles tendon peak elongation, and at toe-off, than the rearfoot strike. The Achilles tendon length at initial contact was greater during the forefoot strike than during the rearfoot strike at 18 km h?1, while its peak elongation was not significantly different during forefoot and rearfoot running. These results indicate that the MG, with a shorter length during forefoot running, manages to address demands for a similar peak force of the triceps surae than during rearfoot running. 相似文献
128.
Rhodri S. Lloyd Jon L. Oliver Michael G. Hughes Craig A. Williams 《Journal of sports sciences》2013,31(14):1565-1573
Abstract The aim of the study was to assess the reliability of a mobile contact mat in measuring a range of stretch–shortening cycle parameters in young adolescents. Additionally, vertical leg stiffness using contact mat data was validated against a criterion method using force–time data. The reliability study involved 18 youths completing a habituation and three separate test sessions, while 20 youths completed a single test session for the validity study. Participants completed three trials of a squat jump, countermovement jump, and maximal hopping test and a single trial of repeated sub-maximal hopping at 2.0 Hz and 2.5 Hz. All tests were performed on the contact mat. Reliability statistics included repeated-measures analysis of variance, intraclass correlation coefficient, and coefficient of variation (CV), while the correlation coefficient (r) and typical error of estimate (TEE) were reported for the validity study. Squat jump height was the most reliable measure (CV = 8.64%), while leg stiffness during sub-maximal hopping, and reactive strength index produced moderate reliability (CV = 10.17–13.93% and 13.98% respectively). Measures of leg stiffness obtained from contact mat data during sub-maximal hopping were in agreement with the criterion measure (r = 0.92–0.95; TEE = 6.5–7.5%), but not during maximal hopping (r = 0.59; TEE = 41.9%). The contact mat was deemed a valid tool for measuring stretch–shortening cycle ability in sub-maximal but not maximal hopping. Although reliability of performance was generally moderate, the tests offer a replicable assessment method for use with paediatric populations. 相似文献
129.
Susanne Johansson 《Sport, Education and Society》2013,18(5):678-693
Coach–athlete romantic relationships and consensual sexual relations are commonly accepted among coaches and athletes, although a growing number of sport organisations discourage or prohibit such relationships. In research, coach–athlete sexual relationships are lumped together with sexual abuse, suggested to harm athletes' well-being, performance, athletic career and team dynamics, and to inherently constitute an abuse of power, trust and ethics. In addition, mistrust of coaches' motives, related to physical touch and fear of sexual misconduct, has resulted in a growing anxiety among coaches. This paper highlights and critically discusses research conceptualisations, contextual understandings and critical issues surrounding coach–athlete sexual relationships, on which there is no comprehensive research outside the sexual abuse context. Studies of authority–subordinate romantic relationships in other social settings have reported that such relationships facilitate both positive and negative characteristics and outcomes. To prevent and reduce harm and to promote well-being, functionality and safe practice in coach–athlete sexual and non-sexual relationships, I suggest that comprehensive research outside the sexual abuse context is required. In addition to the previous research focus on harmful and abusive relationships, coach–athlete sexual relationships that are experienced as consenting and mutually fulfilling by the involved parties need further examination. 相似文献
130.
Rachel Ann O’Brien 《Sport, Education and Society》2013,18(9):954-966
ABSTRACTThe aim of this paper is to discuss the negotiation and performance of researcher identities while conducting fieldwork. It draws on a larger study of masculinities, health and physical education, and sport in an elite boys’ school to analyse the researcher’s role as a female ethnographer in the world of health and physical education in boys’ schooling. Using data drawn from field notes, reflections, and observations from six months of fieldwork at the school, this paper joins a growing body of research, which attests to the importance of making known the ‘hidden histories’ of qualitative research. The significance of this paper is twofold. Firstly, it lies in recognising the details of how researchers position themselves in the field, negotiate and renegotiate their identities, and the significance of social dynamics and relationships to this process. Secondly, it raises awareness of the implications of negotiating researcher identities and embodied experiences in the field and suggests this analysis should become more public in qualitative research. 相似文献