THE RELATIONSHIP BETWEEN EMOTIONS AND CONFIDENCE AMONG GREEK ATHLETES FROM DIFFERENT COMPETITIVE SPORTS

Emotional relationships are crucial for an accurate prediction and control of the impact of emotions on athletic performance. The Individual Zones of Optimal Functioning (IZOF) model attempts to describe and explain emotions related to individually successful and poor performances (Hanin, 1997, 2000). The participants were 617 Greek athletes (424 males and 190 females) from five different sports. Their ages ranged from 18 to 30 years (M=24.30, SD=3.70). All athletes completed the questionnaire on emotions (IZOF, Hanin, 2000), which was translated into Greek (Hanin, Papaioannou & Lukkarila, 2001). The aim of the study was the examination of a possible relationship between emotions and confidence and among different competitive sports in Greece. The results supported the good psychometric properties of the assessment tool. Additionally, the results indicated statistically significant differences among sports in almost all the questionnaire variables: (a) in optimal-pleasant emotions swimmers had higher scores than Graeco-Roman and freestyle wrestlers, (b) in optimal-unpleasant emotions swimmers had higher scores than taekwondoists and water polo players, and (c) in dysfunctional-unpleasant emotions swimmers had lower scores than taekwondoists and water polo players. On the other hand, in dysfunctional-pleasant emotions and in confidence no statistically significant differences among the sports were found. According to previous research, it is also important to indicate that emotional content and intensity are different in training practice and competitions and that they vary across the pre-, mid-, and post-event performance situations (Hanin & Stambulova, 2002). Possible future research might replicate and extend the study's findings, explore an athlete's anxiety, goal-orientations, motivation and performance, and develop effective intervention strategies

Aetiology, course and treatment of acute tubulointerstitial nephritis in paediatric patients: A cross-sectional web-based survey

Background Acute tubulointerstitial nephritis (TIN) is a significant cause of acute renal failure in paediatric and adult patients. There are no large paediatric series focusing on the aetiology, treatment and courses of acute TIN. Patients, design and setting We collected retrospective clinical data from paediatric patients with acute biopsy-proven TIN by means of an online survey. Members of four professional societies were invited to participate. Results Thirty-nine physicians from 18 countries responded. 171 patients with acute TIN were included (54 female, median age 12 years). The most frequent causes were tubulointerstitial nephritis and uveitis syndrome in 31 and drug-induced TIN in 30 (the majority of these caused by non-steroidal anti-inflammatory drugs). In 28 of patients, no initiating noxae were identified (idiopathic TIN). Median estimated glomerular filtration rate (eGFR) rose significantly from 31 at time of renal biopsy to 86 mL/ min/1.73 m2 3-6 months later (p<0.001). After 3-6 months, eGFR normalised in 41 of patients (eGFR �90 mL/ min/1.73 m2), with only 3 having severe or end-stage impairment of renal function (<30 mL/min/1.73 m2). 80 of patients received corticosteroid therapy. Median eGFR after 3-6 months did not differ between steroid-treated and steroid-untreated patients. Other immunosuppressants were used in 18 (n=31) of patients, 21 of whom received mycophenolate mofetil. Conclusions Despite different aetiologies, acute paediatric TIN had a favourable outcome overall with 88 of patients showing no or mild impairment of eGFR after 3-6 months. Prospective randomised controlled trials are needed to evaluate the efficacy of glucocorticoid treatment in paediatric patients with acute TIN. © Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ