This thesis focuses on measurement of anatomical parameters of lower limb in patients with non-traumatical anterior knee pain. Theoretical part of this work describes basic anatomical, kinesiological and biomechanical knowledge about lower limb. Also there are described basic non-traumatical pathologies of knee and how to assess them. Methodology: in experimental part there were examined and measured these parameters: Q angel, foot pronation and range of hip rotation of 28 sportsmen, of which 7 had unilateral anterior knee pain and 4 had bilateral anterior knee with no previous traumatic experience of the knee. Assessing of angles was made through photographic goniometry using Adobe Illustrator to measure angles on digital pictures. Results: the work did not confirm any of hypothesis, that a statistically significant deviation would be found in patients with anterior knee pain compared to heathy population in at least one of the measured parameters. However further analysis of measured data showed statistically significant correlations between foot pronation and range of internal hip rotation and Q angle and range of external hip rotation both in patients with anterior knee pain compared to healthy population where no such correlation was found. Conclusion: This work suggests existence of connection between...

<p>I&scaron;ča&scaron;enje, luksacija ili dislokacija ča&scaron;ice (patele), predstavlja povredu kolena prilikom koje dolazi do pomeranja patele iz patelofemoralnog dela zgloba kolena. Pri ovoj povredi dolazi do o&scaron;tećenja medijalnih mekotkivnih struktura kolena koje su zadužene za pravilno pomeranje ča&scaron;ice unutar patelofemoralnog zgloba. Nakon prve povrede kod velikog borja pacijenata razvije se hronična nestabilnost patelofemoralnog zgloba sa posledičnim recidivantnim luksacijama patele. Mehanizam nastanka hronične nestabilnosti nije u potpunosti razja&scaron;njen i smatra se multifaktorijalnim, a za jedan od faktora smatra se naru&scaron;avanje neurolo&scaron;ke regulacije pokreta kolena. Propriocepcija je složen neurolo&scaron;ki mehanizam koji nam omogućava mentalno mapiranje delova tela, sprečavajući prekomerne i nepravilne pokrete koji mogu dovesti do povređivanja. Za njegovu procenu u zglobu kolena najče&scaron;će se procenjuje osećaj pozicije zgloba (JPS &ndash; eng. &bdquo;Joint Position Sense&ldquo;) kao jedne od komponenti propriocepcije. Nerazja&scaron;njeno je koji je najbolji način za njegovu procenu u pogledu izbora različitih uglova fleksije kolena i pozicija ispitanika, ali i kakav je uticaj povreda struktura kolena na njega. U istraživanju su učestvovale isključivo osobe ženskog pola (15-17 godina), svrstane u tri kategorije od po 30 ispitanika. Prvu, kontrolnu grupu, činile su zdrave ne sportistkinje; drugu, grupu sportistkinja, činile su ispitanice koje su se takmičarski bavile ko&scaron;arkom; treću, grupu pacijentkinja, činile su osobe sa luksacijom ča&scaron;ice kolena. Za merenje JPS kori&scaron;ten je VICON optički sistem (&copy;Vicon Motion Systems Ltd. UK registered no. 1801446) za analizu pokreta. Za svaku grupu meren je JPS metodom pasivnog pozicioniranja-aktivne reprodukcije sa kolenom u različitim nivoima fleksije (30&deg;, 45&deg; i 60&deg;), u uspravnom, ležećem i sedećem položaju, nakon čega su rezultati bili poređeni između grupa. Na&scaron;i rezultati su pokazali da odabir pozicije ispitanika i ugla merenja ne utiče na JPS u zdravim populacijama, kontrolnoj grupi i grupi sportiskinja, niti postoji statistički značajna razlika odgovarajućih pozicija i uglova između ovih grupa. Za grupu pacijentkinja dobili smo da postoji deficit propriocepcije, i da je sedeći stav najosetljivijim za procenu deficita osećaja pozicija zgloba kolena. U odnosu na odgovarajuće uglove kontrolne grupe i grupe sportistkinja, kod pacijentkinja postoji statistički značajno veća gre&scaron;ka traženih uglova u sedećem stavu, zbog čega je ovaj stav karakterističan za ovu grupu. Takođe smo uočili da je najveća razlika pri uglu od 45&deg;, čineći ga kritičnim uglom za grupu pacijentkinja. Ono &scaron;to je ključni zaključak je da nakon povrede kolena po tipu luksacije ča&scaron;ice postoji neurolo&scaron;ki deficit kontrole pokreta kolena, koji potencijalno može dovesti do daljeg povređivanja. Obzirom da je JPS metod kumulativne procene proprioceptivnog sistema, dalja istraživanja bi trebala da budu usmerena na određivanje mesta o&scaron;tećenja istog, čime bi se postiglo bolje razumevanje funkcionisanja sistema regulacije pokreta kao i mogućnost sprovođenja efikasnijeg lečenja nakon povrede kolena.</p> / <p><!--[if gte mso 9]><xml> <o:DocumentProperties> <o:Author>Vukadin Milankov</o:Author> <o:Version>16.00</o:Version> </o:DocumentProperties> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings></xml><![endif]--><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:PunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> 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The problem of the study addressed knee injuries in college football. Imbalance of the musculature surrounding the knee would predispose the athlete to knee injury. Recognition of those who have muscular deficiencies would be a primary way of preventing knee injuries. The focus of the study was to determine if there was a significant difference in peak isokinetic torque of knee flexor and extensor muscles across speeds (60 degrees/second, 180 degrees/ second and 300 degrees/second) of a college football team subsequent to participation in a spring football season.

Introduktion: Många idrottare drabbas av patella tendinopati, framförallt idrotter som inkluderar många hopp och snabba riktningsförändringar. Smärtan som kommer med tillståndet kan påverka en professionell idrottares prestation och karriär.  Syfte: Syftet med denna systematiska litteraturöversikt är att studera effekten av olika behandlingsmetoder avseende på smärta och funktion hos volleybollspelare och basketspelare diagnostiserade med patellar tendinopati.  Metod: Metoden utformades och följde riktlinjerna enligt Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Sökningen gjordes i PubMed och SPORTdiscus med en söksträng framtagen med hjälp av personal från Medicinska biblioteket i Umeå, Sverige. Sammanlagt inkluderades 5 studier i litteraturöversikten. PEDro skalan användes för att kvalitetsgranska samtliga artiklar i litteraturöversikten.  Resultat: Totalt 5 artiklar inkluderades i denna studie. Ingen av studierna uppfyllde kriterierna för låg kvalitet. Fyra av fem studier uppfyllde kriterierna för moderat till god kvalitet och en studie uppnådde hög kvalitet vid kvalitetsgranskningen. Fyra av fem studier utvärderade träning som en behandlingsmetod för patellar tendinopati, en av fem studier utvärderade stötvågsbehandling för patellar tendinopati. Konklusion: Majoriteten av studierna i denna systematiska litteraturöversikt visar på positiva effekter på smärta och funktion av isometrisk, isotonisk och excentrisk träning. Samtliga inkluderande studier uppfyllde moderat till hög kvalitet enligt PEDro skalan. Evidensen i just denna litteraturstudie räcker ej till för att rekommendera en viss behandlingsform till volleyboll-och basketspelare diagnostiserade med patellar tendinopati. Mer forskning kring behandlingsmetoder av patellar tendinopati behövs, specifikt på aktiva volleyboll-och basketspelare.

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The purpose of this study was to examine the differences in technique between sprinters and baseball players while running at maximal speeds. 20 male NCAA Division I athletes participated; ten members of the track and field team specializing in the 100 m or 200 m sprint or the 100 m hurdles and ten members of the baseball team. Each subject performed a maximal effort 80 m sprint while their sprint times were recorded every 10 m starting at the 20 m mark. Each subject was filmed at they ran through a set10 m marking that included where they reached their top speed allowing the camera to capture at least one complete stride. By using the Peak Motus System, each subject's minimum knee flexion, minimum hip angle, knee extension at toe off, contact time, stride length, center of mass at touchdown and shank angle were measured. ANOVA with repeated measures found that sprinters and baseball players display significant differences in their sprinting technique in all variables except shank angle with the sprinters displaying a shorter 10 m split time. It was concluded that proper sprint training during baseball practice could prove to be beneficial to baseball players, however, further research would need to be conducted to support this claim.

Introduction: Maximum running acceleration essential components in many sports. The identification of specific training protocols to maximize sprint speed would be useful knowledge for soccer coaches and players. Purpose: The purpose of this study was to determine the effect of a high-speed treadmill with the use of a body-weight support system in a 6-week sport acceleration program on: 40-yard sprint time, maximal isometric knee flexor and extensor strength. Methods: 32 female soccer players (age 16 ± 1.19 yrs) participated in two treatment groups and one control group. Both treatment groups participated in a 12-session sport acceleration program. The first treatment group utilized a body-weight support system while on a high-speed treadmill; the second group used a standard treadmill with no body weight support system. The control group, NT, did not participate in a sports acceleration program and did not alter their exercise routines outside of the study. Results: For each variable an Analysis of Covariance (ANCOVA) was performed. 40-yard sprint times for treatment groups were shown to improve significantly as compared to the control group (p = 0.0007 for high-speed treadmill with body-weight support system, p= < 0.0001 for standard treadmill without body-weight support system). Isometric flexor and extensor strengths did not show significant differences between treatment groups and control group. P-values for the high-speed with body-weight support system were (p = 0.53) for flexors and (p = 0.51) for extensors as compared to the control group. P-values for the standard treadmill with no body-weight support system were (p = 0.19) for extensors and (p = 0.0263) for flexors. It is noted that the extensor muscles were nearly significant for the standard treadmill with no body-weight support system. Discussion: These results can help high school coaches and athletes determine the optimal treadmill training regime. The current study shows that a high-speed treadmill with body-weight support system is just as beneficial as standard treadmill training.

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No / Objective To evaluate landing strategies of female football and basketball athletes with relation to possible injury mechanisms and disparity in injury. Design Descriptive laboratory study. Participants 52 female football players and 41 female basketball players. Main outcome measures Frontal plane projection angle (FPPA) was measured during the single leg land (SLL) and drop jump (DJ) screening tasks. Results 2 × 2 × 2 mixed factorial ANOVA showed significant main effects were observed for sport, whilst significant interaction effects were seen between sport and task. Females in both sports exhibited significantly greater FPPA values during the SLL task than the DJ task (p < 0.001). Basketball players demonstrated significantly greater FPPA values during SLL than football players (p < 0.001), whilst no differences were found between sports in the DJ task (p = 0.328). Conclusion Female basketball players display greater FPPA values during unilateral landing tasks than female football players which may reflect the greater ACL injury occurrence in this population. Injury prevention programs in these athletes should incorporate unilateral deceleration and landing tasks and should consider the specific injury mechanisms in each sport.