Diss. (sammanfattning) Linköping : Linköpings universitet, 2007. / Härtill 5 uppsatser.

Diss. (sammanfattning) Umeå : Univ., 2006. / Härtill 4 uppsatser.

Thesis (doctoral)--Lund University, 1994. / Added t.p. with thesis statement inserted.

Thesis (doctoral)--Lund University, 1994. / Added t.p. with thesis statement inserted.

Submitted by JONE MAYCON MONTEIRO null (jonemmonteiro@gmail.com) on 2016-08-26T15:03:48Z No. of bitstreams: 1 Dissertação_Monteiro,JM.pdf: 1436221 bytes, checksum: f1f58a4794b9612724c71ecdabf54f9a (MD5) / Rejected by Ana Paula Grisoto (grisotoana@reitoria.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo as orientações abaixo: No campo “Versão a ser disponibilizada online imediatamente” foi informado que seria disponibilizado o texto completo porém no campo “Data para a disponibilização do texto completo” foi informado que o texto completo deverá ser disponibilizado apenas 6 meses após a defesa. Caso opte pela disponibilização do texto completo apenas 6 meses após a defesa selecione no campo “Versão a ser disponibilizada online imediatamente” a opção “Texto parcial”. 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Agradecemos a compreensão. on 2016-08-29T20:32:19Z (GMT) / Submitted by JONE MAYCON MONTEIRO null (jonemmonteiro@gmail.com) on 2016-08-31T13:42:41Z No. of bitstreams: 1 Dissertação_Monteiro,JM.pdf: 1436221 bytes, checksum: f1f58a4794b9612724c71ecdabf54f9a (MD5) / Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-08-31T14:56:42Z (GMT) No. of bitstreams: 1 monteiro_jm_me_guara.pdf: 1436221 bytes, checksum: f1f58a4794b9612724c71ecdabf54f9a (MD5) / Made available in DSpace on 2016-08-31T14:56:42Z (GMT). No. of bitstreams: 1 monteiro_jm_me_guara.pdf: 1436221 bytes, checksum: f1f58a4794b9612724c71ecdabf54f9a (MD5) Previous issue date: 2016-07-05 / O futebol é o esporte mais popular do mundo. Cada vez mais se tem buscado ferramentas para otimizar a performance e diminuir a incidência de lesões nesse esporte. Nessa tentativa a biomecânica se mostra de grande valia e vem cada vez mais sendo utilizada. No futebol o joelho é comum haver lesão do ligamento cruzado anterior, levando a um grande período de afastamento, além de outros problemas que tiram um atleta de jogos, ou até o faz encerrar a carreira precocemente. O objetivo desse projeto de pesquisa é, por meio de instrumentação biomecânica, correlacionar características potencialmente lesivas dos membros inferiores de jogadores profissionais de futebol durante o salto vertical unipodal. Este estudo contou com dados de 5 atletas, referentes a um salto vertical unipodal sobre uma plataforma de força e com canais de eletromiografia nos músculos glúteo médio e vasto medial do quadríceps, simultaneamente a uma filmagem, em dois planos, para posterior análise cinemática. Na fase de impulsão, obteve-se, no momento de agachamento máximo, uma correlação da altura de 63% com a flexão de quadril, e de 80% com a flexão de joelho. A taxa de crescimento da força apresentou uma correlação negativa de 89% com a porcentagem de ativação do glúteo médio. Na fase de aterrissagem, no momento de agachamento excêntrico máximo, registrou-se que, o ângulo Q apresentou correlação proporcional de 90% com a flexão de joelho. A taxa de crescimento da aterrissagem apresentou uma relação proporcional de 70% com a flexão de quadril, de 97% coma força máxima de aterrissagem, e uma correlação negativa de 67% com a porcentagem de ativação do glúteo médio. A altura apresentou uma correlação proporcional de 67% com a força máxima de aterrissagem. A força máxima de aterrissagem, apresentou uma correlação proporcional com a flexão de quadril de 67%, e correlação negativa com a porcentagem de ativação do vasto medial, 67%, e glúteo médio, 76%. Os maiores percentuais de ativação de glúteo médio e vasto medial tiveram uma correlação de 97%. / Football is the most popular sport in the world. Tools have been sought to optimize the performance and reduce the incidence of injuries in this sport. Biomechanics shows itself of great value and it is increasingly being used. In football, the anterior cruciate ligament, for example, has a high incidence, leading to a long period of absence, and other problems that take off a game player, or even finish his career earlier. The objective of this research was, through biomechanical instrumentation, correlating potentially injurious characteristics of the lower limbs of professional soccer players during one-leg vertical jump. This study had data from five athletes of a single leg vertical jump on a force plate and with electromyography channels in the gluteus medius and vastus quadriceps while a shooting in two plans for further kinematic analysis. In the impulsion phase, obtained at the time of maximum squat, the height has a correlation of 63% with the hip flexion, and of 80% proportional with the knee flexion. The growth rate of force showed a negative correlation of 89% with the gluteus medius activation percentage. On the landing stage in the most eccentric squats time, it was registred that the Q angle showed correlation of 90% with knee flexion. The growth rate of the landing showed a proportional relationship with 70% hip flexion, 97% with the maximum force of landing, and a negative proportional correlation of the 67% with the gluteus medius activation percentage. The height presented a proportional correlation of 67% with a maximum force of landing. The maximum force of landing presented a proportional correlation with the hip flexion of 67%, and negative correlation to the percentage of the vastus activation, 67%, and gluteus medius, 76%. The highest percentages of gluteus medius and vastus activation had a correlation of 97%.

Lam, Mak Ham. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (leaves 110-131). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese.

Diss. (sammanfattning) Umeå : Umeå universitet, 2009. / Härtill 5 uppsatser. Även tryckt utgåva.

Thesis (M Sport Sc (Sport Science)--University of Stellenbosch, 2010. / ENGLISH ABSTRACT: Knee injuries are common among the physically active population and are often severe enough that it requires surgery. Rehabilitation specialists are on the constant look-out for the most efficient and cost-effective treatment alternatives to provide athletes with an early return to sport. The inclusion of backward locomotion in knee rehabilitation programs has been proposed since it is considered a safe closed kinetic chain exercise which has been found to increase quadriceps strength and power as well as cardiorespiratory fitness. The primary aim of the study was to establish the efficacy of backward locomotion training during a knee rehabilitation program. Thirty nine men and women (aged 18 to 59 years) with knee pathologies volunteered for the study and were randomly assigned to the experimental group (EXP, n = 20) and control group (CON, n = 19). All participants underwent a 24 session knee rehabilitation program which included 20 – 30 minutes of cardiorespiratory training, either in backward mode (EXP), or forward mode (CON). Aerobic fitness, quadriceps and hamstrings strength and power, single leg balance, lower limb circumferences, and lower limb flexibility were measured before and after the rehabilitation program. Backward locomotion training resulted in a borderline statistical significant improvement in ventilatory threshold (VT) (p = 0.07) and a statistical significant improvement in peak power output (PPO) (p < 0.05). The VT and PPO of the backward locomotion group increased by 9 and 14%, respectively, compared to 0 and 4% in the forward locomotion group. Both groups showed statistically significant improvements in quadriceps and hamstrings strength, except the quadriceps of the uninvolved leg of the forward locomotion group. Similarly, both groups showed a statistically significant improvement in quadriceps and hamstrings average power, except the quadriceps of the uninvolved leg of the forward locomotion group. Single leg balance of the involved and uninvolved legs improved statistically significantly in both groups (p < 0.05). The differences in change between the two interventions were not statistically significantly different (p > 0.05) and the practical differences were small (ES ± 0.2). No statistically significant differences in the change in leg circumferences were observed between the two groups. Only the change in flexibility of the involved soleus was significantly different between the EXP and CON groups. The results show that backward locomotion training result in greater improvements in aerobic fitness and equal or greater improvements in quadriceps and hamstrings muscle strength and power, compared to forward locomotion training. Backward locomotion as well as forward locomotion contributes to the recovery of knee injuries, however, the practical significance of backward locomotion is greater than for forward locomotion. The conclusion of this is that backward locomotion is a better alternative rehabilitation program for athletes as this will affect a quicker return to their sport. / AFRIKAANSE OPSOMMING: Kniebeserings kom algemeen voor in die fisiek aktiewe bevolking en is dikwels so ernstig dat dit chirurgie vereis. Rehabilitasie-spesialiste is voortdurend op soek na die mees doeltreffende en koste-effektiewe alternatief vir behandeling om die atlete vinnig te laat terugkeer na hul sport. Die insluiting van agteruitbeweging in knie-rehabilitasieprogramme is al in die verlede voorgestel, aangesien dit beskou word as 'n veilige geslote-kinetieseketting oefening wat al geskik bevind is om quadriceps sterkte en krag, asook kardiorespiratoriese fiksheid te verbeter. Die hoofdoel van die studie was om die effektiwiteit van agteruitbewegingoefening in 'n knierehabilitasieprogram te bepaal. Nege-en-dertig mans en vroue (tussen die ouderdom van 18 en 59 jaar) met kniepatologieë het vrywillig ingestem om aan die studie deel te neem en is lukraak verdeel in die eksperimentele groep (EXP, n = 20) en kontrole groep (CON, n = 19). Alle deelnemers het 24 sessies voltooi waarvan 20 – 30 minute kardiorespiratoriese oefeninge was. Dit het óf in die agteruitrigting (EXP), óf vorentoe-rigting (CON) plaasgevind. Aërobiese fiksheid, quadriceps en hamstrings sterkte en krag, eenbeenbalans, omtrekke van die onderste ledemaat, en soepelheid van die onderste ledemaat is gemeet, voor en na die rehabilitasieprogram. Agteruitbeweging-oefening het 'n geringe verbetering in ventilatoriese draaipunt (VT) (p = 0.07) opgelewer wat grens aan 'n statisties betekenisvolle verbetering, asook 'n statisties betekenisvolle verbetering in piek kraguitset (PPO) (p <0.05). Die VT en PPO van die agteruitbeweging groep het onderskeidelik verbeter met 9 en 14%, in vergelyking met 0 en 4% in die vorentoe-beweging groep. Beide groepe het statisties betekenisvolle verbeteringe in quadriceps en hamstrings sterkte getoon, behalwe die quadriceps van die onbeseerde been van die vorentoe-beweging groep. Soortgelyk daaraan het beide groepe statisties betekenisvolle verbeteringe in quadriceps en hamstrings gemiddelde krag getoon, behalwe die quadriceps van die onbeseerde been van die vorentoe-beweging groep. Eenbeenbalans van die beseerde en onbeseerde bene het statisties betekenisvol verbeter in beide groepe (p < 0.05). Die verskil in verandering tussen die twee intervensies was nie statisties betekenisvol verskillend nie en die praktiese verskil was klein (ES ± 0.2). Geen statisties betekenisvolle verskille is waargeneem tussen die twee groepe in die verandering in beenomtrekke nie. Slegs die soepelheid van die beseerde soleus van die EXP groep het statisties betekenisvol verbeter tussen die twee groepe. Die resultate toon dat agteruitbeweging-oefening tot groter verbetering gelei het in aërobiese fiksheid en gelyke of groter verbetering in quadriceps en hamstrings sterkte en krag, in vergelyking met vorentoe-beweging oefening. Agteruitbeweging-oefening sowel as vorentoe-beweging oefening dra by tot die herstel van kniebeserings, maar die praktiese beduidendheid van agteruitbeweging-oefening is groter as vorentoe-beweging oefening. Die gevolgtrekking van die studie is dat agteruitbeweging 'n beter alternatiewe rehabilitasieprogram vir atlete is, met 'n gevolglike vinniger terugkeer na hul sport.

Bakgrund/problemformulering Knäskador inom handbollen är utbredda och allmänt kända. Kvinnliga handbollsspelare har visat sig ha en högre risk för långvariga knäskadeproblem. Knäskador inom handboll är beforskat utifrån incidens och även vilken typ av träning som är fördelaktig för att förebygga skador. Däremot har inga studier kring vad handbollstränare har för upplevelser och erfarenheter kring knäskadeförebyggande träning gjorts. Syfte Syftet med studien är att undersöka och kartlägga upplevelser och erfarenheter hos handbollstränare för flickor i 10–19 år angående knäskadeförebyggande träning. Design och metod Kvalitativ explorativ design. Fem semistrukturerade intervjuer med intervjuguide. Till databearbetning användes kvalitativ innehållsanalys Resultat Tränarna såg knäskadeförebyggande träning som en viktig del i träningen. Det förekom variationer i upplägg och innehåll. Flertalet faktorer kring skadeprevention belystes som exempelvis resurser, kompetens och motivation hos spelarna att delta i knäskadeförebyggande träning. Slutsats Bland de faktorer som påverkar möjligheten till optimal skadeförebyggande träning är motivation hos unga spelare en av de större. Det kan tänkas att om tränarna utbildas inom områdena beteende och motivation och hur dessa påverkar varandra, att den skadeförebyggande träningen får än större effekt. / Background Knee injury within handball are well heard of. Female handball players have shown a greater risk developing long term knee injury. Injury to the knee is well investigated from incidence and also what kind of training is beneficial for preventing knee injury. However no studies have yet enlightened what experiences handball coaches possess in the area. Purpose The purpose of the study was to investigate and to survey what experiences regarding knee injury prevention training handball coaches’, coaching girls between the ages of 10- 19 years old possessed. Design and method A qualitative explorative design was used. Five semi-structured interviews based on a interview guide fort. A qualitative content analysis was used for data processing. Result The handball coaches looked at knee injury prevention as an important part of the overall training though there were variations in set up and content. A great deal of factors about injury prevention where mentioned, for example, resources, knowledge and motivation to participate in knee injury preventive exercises among the players. Conclusion Amongst the factors affecting the possibility for effective knee injury prevention training, motivation of young players was one of the most important ones. If coaches acquire education within the area`s behavior and motivation and how they affect each other it might lead to knee injury prevention being more effective.

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