Prospective analysis of sports injuries in the JT Thunders volleyball team during the 2017/2018 season

Odbojkarska sezona je za igralce in igralke dolga in naporna. Ko zaključijo klubsko sezono, ima večina še reprezentančne obveznosti, zato so odbojkarji in odbojkarice vse leto zelo obremenjeni in morajo skrbeti, da ostanejo zdravi in nepoškodovani. Vsi razen igralnega mesta libero naredijo različne skoke pri izvajanju servisa, bloka, podaje in napadalnih akcij. Nekaj raziskav na to temo je že bilo narejenih, vendar vsaka z različno bazo podatkov in načini merjenja. Namen naše raziskave je bil analizirati mesta poškodb ter skoke glede na igralno mesto na treningih in tekmah, na koncu pa ugotoviti povezanost skokov s poškodbami. V raziskavo smo vključili dvaindvajset igralcev japonske odbojkarske ekipe JT Thunders: dva podajalca, dva korektorja, devet sprejemalcev in devet blokerjev. Vsi igralci so na vsakem treningu nosili napravo My Vert, s katero smo zbrali podatke o številu in pogostosti skokov. Poškodbe in odsotnost igralcev iz trenažnega procesa je vso sezono beležil njihov trener in nam te podatke posredoval, mi pa smo jih obdelali in s korelacijo izračunali povezavo poškodb s skoki. Analiza je pokazala, da je incidenca poškodb v klubu nizka in da je večja incidenca poškodb na treningih kot na tekmah. Ugotovili smo, da je največ poškodb glede na anatomsko lokacijo na predelu medenice oziroma trtice, malo manj je poškodb ključnice, sledijo poškodbe kolena, komolca, gležnja, stegna ter vratu in prsnice. Največ skokov glede na igralno mesto naredijo podajalci. Na treningih naredijo največ skokov podajalci, blokerji, sprejemalci in korektorji, na tekmah pa podajalci, korektorji, blokerji in sprejemalci. S Spearmanovim koeficientom smo izračunali povezanost skokov s poškodbami in ugotovili, da le-ta ni statistično značilna, kar pomeni, da povezanosti skokov s poškodbami nismo ugotovili. Želimo si, da bi bilo v prihodnje opravljenih še več raziskav na to temo, obenem pa upamo, da bomo tudi v Sloveniji začeli uporabljati takšne naprave, ki bi trenerjem omogočile zbiranje natančnejših podatkov. Te naprave bi veliko pripomogle k načrtovanju trenažnega procesa, k spremljanju obremenitev pri posameznem igralcu na igralnem mestu ter k preprečevanju poškodb.A volleyball season is long and tiring for the female and male players. For most of the volleyball players, after the club season then continue with obligations in their national teams. The players are overwhelmed throughout the whole year and need to take extra care of themselves to stay healthy and avoid injuries. Volleyball players, except the libero, are exposed to numerous jumps when serving, blocking, setting or attacking. Various studies on this specific topic were already carried out but none with the same database and methods of measuring. The master thesis focuses on the areas of injuries, the jump load for each playing position during training sessions and matches and correlation between jumps and injuries. Our study involves twenty-two players of the Japanese volleyball team JT Thunders: two setters, two opposites, nine receivers and nine middle blockers. During each training session, all players used a MyVert device, which allowed us to obtain the exact number and frequency of jumps. By monitoring the injuries and absences of players during the season, we were able to determine the relationship between injuries and jumps. The analysis has shown that the overall injury incidence in the club is low and that the injury incidence during the training sessions is higher comparing to matches. We have concluded that most of the injuries are located in the pelvis and coccyx area, a few in the collarbone area, some in the knee, elbow, ankle and thigh areas and the least neck and sternum areas. The players with biggest number of jumps during training sessions are setters, followed by middle blockers, receivers and opposites. During the matches, setters made biggest number of jumps followed by opposites, middle blockers and receivers. We determined the relationship between jumps and injuries with Spearman\u27s correlation coefficient and the results showed that there is no real connection between jumps and injuries. These findings can help coaches in the future to start using such devices also in Slovenia to get better view on volleyball loads and also carry out more studies on this topic in the future. Our study can help coaches for better planning of trainings and monitoring the load of each player for prevention of injuries help trainers to improve their training process and have an easier job in monitoring the workload of each player and to prevent injuries