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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Does one repetition maximun in clean correlate with 20 meter sprint and countermovement jump?

Sofie, Sivertsson January 2016 (has links)
Background: Crossfit is a high-volume training form and is popular among society and military communities because of its metabolic and physical challenging conditioning program. Crossfit includes both aerobic and anaerobic training and performers of Crossfit use all three different metabolic pathways, the phosphagen system, glycolysis and oxidative system. Similarities in movement pattern clean, countermovement jump (CMJ) and sprint running exist and also the use of stretch shortening cycle (SSC), which is a biomechanical function that is used in for example plyometric exercises. Recent research has reported correlation between weightlifting, countermovement jump (CMJ) and sprint, however, few of these studies have used female Crossfit performers. Aim: The aim of this study was to examine if there is a correlation between the performances of a clean and linear sprint time in 20 meter and if there is a correlation between the performance of clean and height in CMJ. Method: To participate, the women had to be a member of a Crossfit gym since five months back, and have five month of experience of practicing the clean exercise. The study had two different test sessions were the first session was for one repetition max in clean and session two was for 20 meter sprint and CMJ. Result: Fifteen females participated in the study and the correlation between clean and CMJ showed a strong correlation (r =0,74, r2=0,55) and when controlling clean and CMJ for body mass, the result showed a very strong correlation (r=0.88). The associations between clean and sprint showed a moderate to strong negative correlation (r =-0,52, r 2=0,27) and when controlling for body mass the result was (r =-0.54). The association between CMJ and sprint showed a strong correlation (r=-0.69, r2=0,48) and when controlling for body mass the correlation was (r =-0.71). Conclusion:Findings from this current study showed that there is a strong relationship between CMJ and clean among female Crossfit participants. This indicate that weightlifting exercise, in this case clean, can improve power exercises as jump height, but not to forget the importance of practicing jump movements as well. For further research it would be interesting if the participants were divided in groups depending on how long they had practiced in Crossfit. To see if there would be any different in clean, sprint and jump among these measurements, and maybe use both squat jump and CMJ as a test for jump to see the different in the result it might give.
2

Korrelation mellan sprinttid och vertikal hopphöjd hos ryttare

Lindvert, Malin January 2016 (has links)
Abstract It has been shown that horse riding is a comprehensive exercise in which many of the body's muscle groups are activated. Horse riding can improve your coordination, strength, flexibility, balance, conditioning, posture and perception. The relationship between jump and sprint in explosive sports such as football, basketball and handball is well-studied. However, few studies have examined this relationship in sports where no explosively training is involved, such as horseback riding.  The aim of this study was to analyze the relationship between the sprint capacity of 5 and 20 meters and jump height in a countermovement jump and squat jump of riders.  In this study, 15 riders were analyzed and volunteered as test subjects, performed a predicted maximal 5 and 20-m sprints, vertical jump height by squat jumps (SJ), and countermovement jumps (CMJ). To analyze the relationship between SJ, CMJ, and 5 and 20 m sprinted, Spermans correlations of coefficient was used. Acorrelation between 0.3-0.49 was considered as moderate, all that is over this is a strong correlations and everything below is weak.  All jump was shown a strong negative linear correlation with sprint time of 5 to 20 m, SJ at 5 m rs = -0.69 , SJ at 20 m rs = -0.74 . The jump CMJ showed follow result at 5 m rs = -0.56 , CMJ at 20 m rs= -0.51 . The result of the strong negative linear correlation demonstrates that the higher the vertical jump height the rider has, the stronger is the relationship with sprint speed.  Vertical jump height and the correlation between vertical jump height and sprint at riders seem to be comparable to the correlation seen in athletes who exercise more explosive sports. / Sammanfattning Det har visat sig att ridning är en allsidig träning där många av kroppens muskelgrupper aktiveras. Ridning ger förbättrad koordination, styrka, rörlighet, balans, kondition, hållning samt perception. Sambandet mellan hopp och sprint i explosiva idrotter såsom fotboll, basket, handboll är välstuderat, men få studier har studerat detta samband i idrotter som inte tränar explosivt, såsom ridning. Syftet med studien var att undersöka sambandet mellan sprintförmågan på 5 och 20 meter samt hopphöjden i ett countermovement jump (CMJ) och squat jump (SJ) hos ryttare. I studien deltog och analyserades 15 kvinnliga ryttare i vertikal hopphöjd genom SJ och CMJ samt 5 och 20 meter sprint. För att studera sambandet mellan SJ, CMJ samt 5 och 20 m sprinttid användes Spermans korrelations kofficient (rs). En korrelation mellan 0.3-0.49 räknas som moderat, allt som är över räknas som starka korrelationer samt allt under 0,3 räknas som svaga. Vid samtliga hopp visades en stark negativ linjär korrelation med sprinttiden 5 och 20 m, följande resultat visades för SJ vid 5 m rs= -0,69 och SJ vid 20 m rs= -0,74. Vid hoppet CMJ visades följande resultat på 5 m rs= -0,56, CMJ vid 20 m rs=-0.51. Resultatet av den starka negativa linjära korrelationen påvisar att ju högre vertikal hopphöj ryttaren har desto starkare samband finns med sprinthastigheten. Vertikal hopphöjd och korrelationen mellan vertikal hopphöjd och sprint hos ryttare verkar vara jämförbar med den korrelation som ses hos idrottare som utövar mer explosiva sporter.
3

Die Charakterisierung der kurzen Schwimmstrecken in Bezug auf die biomechanischen Variablen Zyklusfrequenz und Zykluslänge

Santos, Sílvio Soares dos. Unknown Date (has links)
Universiẗat, Diss., 1999--Konstanz.
4

Capacidade de sprints repetidos: efeito do treinamento de força com e sem plataforma vibratória e potencialização pós-ativação / Repeated sprint ability: effect of strength training with and without vibration platform e postactivation potentiation

Okuno, Nilo Massaru 29 August 2011 (has links)
O objetivo do estudo foi verificar a ocorrência da potencialização pós-ativação (PPA) e o efeito do treinamento de força (TF) sem e com a plataforma vibratória na capacidade de sprints repetidos (CSR). O estudo foi divido em duas partes: a primeira analisou o efeito do TF associado à plataforma vibratória na CSR; e a segunda verificou a ocorrência da PPA na CSR. No primeiro estudo participaram 29 sujeitos, os quais foram divididos em 3 grupos: TF, TF+vibração a 30 Hz e amplitude de 2-4 mm (TF+V30) e TF+vibração a 50 Hz e amplitude de 4-6 mm (TF+V50). Os sujeitos realizaram inicialmente análise da área de secção transversa do quadríceps (ASTQ), teste de uma repetição máxima (1RM) no exercício agachamento e o teste de CSR. Após isso, os sujeitos foram submetidos a 10 semanas de treinamento de força, de acordo com o seu respectivo grupo e, ao final da intervenção, realizaram as mesmas avaliações aplicadas antes das sessões de treinamento. No segundo estudo, 12 jogadores de handebol realizaram teste de 1RM, e em sequência, de maneira aleatória o teste de CSR sem e com a atividade condicionante. A atividade condicionante foi realizada no exercício agachamento e consistiu de cinco séries de uma repetição a 90% de 1RM. O treinamento de força sem e com a vibração aumentou na mesma magnitude a força muscular e a ASTQ. Para o grupo TF+V30, o tempo do melhor sprint (CSRmelhor) melhorou significantemente após as 10 semanas de treinamento, no entanto, sem diferença em relação aos outros grupos. O tempo médio dos sprints (CSRmédio) diminuiu significantemente em todos os grupos. Contudo, para o percentual de decréscimo nos sprints (CSR%dec) apenas foi verificado melhoria no grupo TF em relação à situação pré-treinamento e ao grupo TF+V30 na mesma situação experimental. No segundo estudo foi verificado que o protocolo de PPA melhorou significantemente o CSRmelhor e o CSRmédio, sem alterar o CSR%dec. Dessa forma, conclui-se que o treinamento de força sem e com a plataforma vibratória aumenta a força muscular, a ASTQ e o desempenho na CSR. No entanto, o treinamento de força com a plataforma vibratória não aumentou o desempenho em maior magnitude quando comparado a situação sem este tipo de equipamento. Além disso, o protocolo de PPA melhorou também o desempenho de CSR (CSRmelhor e CSRmédio) em jogadores de handebol. Assim, estratégias para melhorar a força muscular de maneira aguda (PPA) e crônica (TF) aumentam também o desempenho no teste de CSR. / The purpose of this study was to verify the occurrence postactivation potentiation (PAP) and the effect of strength training (ST) with and without vibration platform on repeated sprint ability (RSA). The study was divided in two parts: in the first part, it was analyzed the effect of ST with vibration platform on RSA; and in the second part, it was verified the occurrence of PAP on RSA. Twenty nine subjects participated in the first study, which were divided into 3 groups: ST, ST+vibration at 30 Hz and amplitude of 2-4 mm (ST+V30) and ST+vibration at 50 Hz and amplitude of 4-6 mm (ST+V50). Initially, the quadriceps cross sectional area measurement (QCSA), one repetition maximum (1RM) test on squat exercise and the RSA test were performed. After this, the subjects performed 10 weeks of strength training according to their groups and, at the end of intervention, they were undertook the same evaluations applied before training sessions. In the second study, 12 handball players performed the 1RM test and subsequently they were submitted at random, to the RSA test with and without conditioning activity. The conditioning activity was performed in squat exercise with five sets of one repetition at 90% of 1RM. The strength training with and without vibration platform increased in the same magnitude the muscular strength and QCSA. For ST+V30 group, the best sprint time (RSAbest) was significantly improved after 10 weeks of training, but without difference when compared with other groups. Mean sprint time (RSAmean) was significantly reduced in all groups. However, the percentage of sprint decrement (RSA%dec) only decreased in ST group when compared with the situation before training and the ST+V30 group in the same experimental situation. In the second study, the PAP protocol significantly improved the RSAbest and RSAmean, without change the RSA%dec. From the results, we conclude that the strength training with and without vibration platform improves the strength, QCSA and performance on RSA. However, the strength training with vibration platform did not increase the performance in higher magnitude when compared to the situation without this equipment. Furthermore, PAP protocol improved the RSA performance (RSAbest e RSAmean) in handball players. Thus, strategies to improve muscle strength in acute (PAP) and chronic manner (ST) also increase the performance on RSA test
5

Relationships between selected speed strength performance tests and temporal variables of maximal running velocity

Faccioni, Adrian, n/a January 1995 (has links)
The relationships between selected sprint specific bounding exercises and sprint performance were analysed using fourteen sprint athletes (7 elite performers, 7 sub-elite performers). Subjects were required to perform sprints over 60m, Counter Movement Jumps with and without loading (20kg), High Speed Alternate Leg Bounding over 30m and High Speed Single Leg Hopping over 20m. All athletes were subject to anthropometric measurement (Height, Weight and Leg Length). Of all variables measured, the Elite group were significantly better (p<0.001) in Counter Movement Jump, Time to 60m, Time from 30m to 60m and in their Maximal Running Velocity. Linear regressions were carried out on all variables that correlated with Time to 30m (Acceleration Phase) and Maximal Running Velocity at both the pO.OOl and p<0.01 level of significance. This allowed several prediction tables to be compiled that had performance measures (sprints and jumps) that could be used as testing measures for sprint athletes to determine their Acceleration Phase and Maximal Running Velocity. A stepwise multiple regression demonstrated that Time to 60m was the best predictor of Maximal Running Velocity. Time to 60m, Leg length, High Speed Alternate Leg Bounding and Sprint Stride Rate were the best predictors of the Acceleration Phase. A Stepwise cross-validation linear discriminant function analysis was used to determine the best predictors from both sprint and jump measures that would distinguish an athlete as an elite or sub-elite performer. From sprint variables, Time to 60m and Time to 30m were the two variables that best placed a sprint subject in either the Elite or Sub-elite group. From the bounding variables, Counter Movement Jump and the Ground Contact Time of the High Speed Alternate Leg Bounding were the two variables that best placed a sprint subject in either the Elite or Sub-elite group. The present study suggests that Time to 60m is the best predictor of Maximal Running Velocity and Acceleration Phase. Counter Movement Jumping and High speed Alternate Leg Bounding are also useful tools in developing and testing elite sprint athlete performance.
6

Análise dos esforços de alta intensidade de jogadores de futebol profissional / Analysis of high intensity efforts of professional soccer players

Marche, Ana Lorena, 1985- 17 August 2018 (has links)
Orientador: Sergio Augusto Cunha / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação Física / Made available in DSpace on 2018-08-17T08:19:48Z (GMT). No. of bitstreams: 1 Marche_AnaLorena_M.pdf: 995809 bytes, checksum: 6e695161a6f78b6dcebdc5faead3fb5e (MD5) Previous issue date: 2010 / Resumo: O objetivo deste trabalho foi caracterizar os esforços de alta intensidade realizados por jogadores de futebol durante jogos oficiais. Para isso foram gravadas nove partidas da primeira divisão do campeonato brasileiro de 2001 a 2008, por quatro câmeras digitais, com uma frequência de aquisição de 7.5 e 30 Hz, posicionadas em um local elevado do estádio. A trajetória dos jogadores durante a partida inteira foi obtida através do software Dvideo, que permite a medição semi-automática da posição dos jogadores. Em seguida, realizou-se a reconstrução 2D dos dados e, de posse das coordenadas bidimensionais de todos os jogadores em campo durante todos os jogos, os quais foram suavizados através do filtro digital Butterworth de 3ª ordem, em uma freqüência de corte de 0,4 Hz, disponível no software Matlab®. Neste estudo foram analisados 107 jogadores que atuaram durante a partida inteira, excluindo-se os goleiros. Os jogadores foram divididos em cinco posições: zagueiros (n=27), laterais (n=25), volantes (n=18), meias (n=17), atacantes (n=20). As curvas de velocidade foram obtidas através da derivação numérica dos dados suavizados das trajetórias. No presente estudo, os esforços de alta intensidade (EAI) foram definidos contendo duas fases. O início da fase 1 foi definida como sendo o primeiro valor de mínimo local antes de um valor acima de 6,4 m/s e o final como sendo o instante que a velocidade ultrapassa de 6,4 m/s. O início da fase 2 foi definida como sendo o instante que a velocidade ultrapassa de 6,4 m/s e o final como sendo o instante que a velocidade diminui de 6,4 m/s. Os resultados encontrados foram: número total de EAIs de cada jogador (32 ± 12), distância percorrida nos EAIs na fase 1 e 2 (8 ± 5m, 12 ± 9m respectivamente), tempo de duração dos EAIs na fase 1 e 2 (2 ± 1s, 1,6 ± 1s, respectivamente), velocidade inicial (2 ± 1,5m/s), velocidade máxima (7 ± 1 m/s), tempo entre cada EAIs (158 ± 176s) e porcentagem do tempo andando depois do EAI (44 ± 17%). Comparando entre primeiro e segundo tempo, o número de EAIs realizados pelos jogadores mostrou uma queda significativa do primeiro para o segundo tempo. Já para o tempo entre cada EAI e a porcentagem do tempo andando ocorreu um aumento significativo do primeiro para o segundo tempo. Na comparação entre as posições, os resultados encontrados mostraram que os laterais percorrem uma maior distância e tiveram um tempo maior de EAI durante a fase 2 do que zagueiros e atacantes. Os laterais, atacantes e meias tiveram um tempo entre cada EAI menor em relação aos zagueiros e volantes. Já na porcentagem do tempo andando depois dos EAI os zagueiros e atacantes passam mais tempo andando em relação aos laterais, volantes e meias. O tempo entre cada EAI e a porcentagem do tempo andando depois dos EAIs no final do primeiro tempo e no final do segundo tempo tem diferenças significativas com os primeiros 15 minutos do primeiro e segundo tempo. Podemos concluir que ao incorporar a fase de aceleração, houve uma melhor caracterização dos esforços de alta intensidade dos jogadores de futebol, pois desta maneira os preparadores físicos tem informações sobre o esforço exigido durante uma corrida de alta intensidade / Abstract: The aim of this work is to characterize the high intensity efforts performed by soccer players during official games. For these, nine games of the first division Brazilian championship game was recorded by four stationary digital video cameras, with acquisition frequency of 7.5 and 30 Hz, positioned in the highest points of the stadium. Players' trajectories during the whole game were obtained through an automatic tracking method with Dvideo (Figueroa et al. 2006). These data were reconstructed in 2D and smoothed using a third order Butterworth low-pass filter with cutoff frequency of 0.375 Hz, available in Matlab® software. In this study 107 players that played the entire game were analyzed, excluding goalkeepers. The players were divided in five positions that were: central defenders (n=27), full backs (n=25), central midfielders (n=18), wide midfielders (n=17), attackers (n=20). The curves of velocity were obtained by numerical derivation from the data of the smoothed trajectories. In the present study the sprint was divided in two phases: the beginning of the phase 1 was defined as the first local minimum before a value of 6.4 m/s and the final as the instant that velocity was higher from 6.4 m/s. The beginning of the phase 2 was defined as the instant that velocity was higher from 6.4 m/s and the final the instant the velocity lower them 6.4 m/s. From the new definition, variables of the sprints were calculated to characterize them. The results showed that the numbers of sprints, sprints distance covered in the phase 1 and 2, sprints duration in the phase 1 and 2, initial velocity, peak velocity, time between each sprint and percentage of time walking after high intensity efforts were respectively, 32±12 sprints, 8±5 m, 12±9 m, 2±1 s, 1,6±1 s, 2±1.5 m/s, 7±1 m/s e 158±176 s. Comparison between first and second half, the number of high intensity efforts performed by the players showed a significant drop from first to second half, and the time between each high intensity efforts was a significant increase between the first and second half. Comparing the five positions of the players, the results showed that the distance covered and duration of each high intensity efforts during in the phase 2, the full backs covered a great distance and take longer time to make a sprint that central defenders and attackers. Already the percentage of time walking after high intensity efforts the central defenders and attackers spend more time walking than full backs, central midfielders and wide midfielders. The full backs, attackers and wide midfielders had a time between each high intensity efforts lower compared to the central defenders and central midfielders. The time between each high intensity efforts and the percentage of time walking after high intensity high intensity efforts at the end of the first half and at the end of the second half has significant differences with the first 15 minutes of the first and second time. It is possible to conclude that incorporating the acceleration phase allowed a better characterization of high intensity efforts of soccer players. For now on the physical trainers have more information about the effort required during a high intensity run / Mestrado / Ciencia do Desporto / Mestre em Educação Física
7

Capacidade de sprints repetidos: efeito do treinamento de força com e sem plataforma vibratória e potencialização pós-ativação / Repeated sprint ability: effect of strength training with and without vibration platform e postactivation potentiation

Nilo Massaru Okuno 29 August 2011 (has links)
O objetivo do estudo foi verificar a ocorrência da potencialização pós-ativação (PPA) e o efeito do treinamento de força (TF) sem e com a plataforma vibratória na capacidade de sprints repetidos (CSR). O estudo foi divido em duas partes: a primeira analisou o efeito do TF associado à plataforma vibratória na CSR; e a segunda verificou a ocorrência da PPA na CSR. No primeiro estudo participaram 29 sujeitos, os quais foram divididos em 3 grupos: TF, TF+vibração a 30 Hz e amplitude de 2-4 mm (TF+V30) e TF+vibração a 50 Hz e amplitude de 4-6 mm (TF+V50). Os sujeitos realizaram inicialmente análise da área de secção transversa do quadríceps (ASTQ), teste de uma repetição máxima (1RM) no exercício agachamento e o teste de CSR. Após isso, os sujeitos foram submetidos a 10 semanas de treinamento de força, de acordo com o seu respectivo grupo e, ao final da intervenção, realizaram as mesmas avaliações aplicadas antes das sessões de treinamento. No segundo estudo, 12 jogadores de handebol realizaram teste de 1RM, e em sequência, de maneira aleatória o teste de CSR sem e com a atividade condicionante. A atividade condicionante foi realizada no exercício agachamento e consistiu de cinco séries de uma repetição a 90% de 1RM. O treinamento de força sem e com a vibração aumentou na mesma magnitude a força muscular e a ASTQ. Para o grupo TF+V30, o tempo do melhor sprint (CSRmelhor) melhorou significantemente após as 10 semanas de treinamento, no entanto, sem diferença em relação aos outros grupos. O tempo médio dos sprints (CSRmédio) diminuiu significantemente em todos os grupos. Contudo, para o percentual de decréscimo nos sprints (CSR%dec) apenas foi verificado melhoria no grupo TF em relação à situação pré-treinamento e ao grupo TF+V30 na mesma situação experimental. No segundo estudo foi verificado que o protocolo de PPA melhorou significantemente o CSRmelhor e o CSRmédio, sem alterar o CSR%dec. Dessa forma, conclui-se que o treinamento de força sem e com a plataforma vibratória aumenta a força muscular, a ASTQ e o desempenho na CSR. No entanto, o treinamento de força com a plataforma vibratória não aumentou o desempenho em maior magnitude quando comparado a situação sem este tipo de equipamento. Além disso, o protocolo de PPA melhorou também o desempenho de CSR (CSRmelhor e CSRmédio) em jogadores de handebol. Assim, estratégias para melhorar a força muscular de maneira aguda (PPA) e crônica (TF) aumentam também o desempenho no teste de CSR. / The purpose of this study was to verify the occurrence postactivation potentiation (PAP) and the effect of strength training (ST) with and without vibration platform on repeated sprint ability (RSA). The study was divided in two parts: in the first part, it was analyzed the effect of ST with vibration platform on RSA; and in the second part, it was verified the occurrence of PAP on RSA. Twenty nine subjects participated in the first study, which were divided into 3 groups: ST, ST+vibration at 30 Hz and amplitude of 2-4 mm (ST+V30) and ST+vibration at 50 Hz and amplitude of 4-6 mm (ST+V50). Initially, the quadriceps cross sectional area measurement (QCSA), one repetition maximum (1RM) test on squat exercise and the RSA test were performed. After this, the subjects performed 10 weeks of strength training according to their groups and, at the end of intervention, they were undertook the same evaluations applied before training sessions. In the second study, 12 handball players performed the 1RM test and subsequently they were submitted at random, to the RSA test with and without conditioning activity. The conditioning activity was performed in squat exercise with five sets of one repetition at 90% of 1RM. The strength training with and without vibration platform increased in the same magnitude the muscular strength and QCSA. For ST+V30 group, the best sprint time (RSAbest) was significantly improved after 10 weeks of training, but without difference when compared with other groups. Mean sprint time (RSAmean) was significantly reduced in all groups. However, the percentage of sprint decrement (RSA%dec) only decreased in ST group when compared with the situation before training and the ST+V30 group in the same experimental situation. In the second study, the PAP protocol significantly improved the RSAbest and RSAmean, without change the RSA%dec. From the results, we conclude that the strength training with and without vibration platform improves the strength, QCSA and performance on RSA. However, the strength training with vibration platform did not increase the performance in higher magnitude when compared to the situation without this equipment. Furthermore, PAP protocol improved the RSA performance (RSAbest e RSAmean) in handball players. Thus, strategies to improve muscle strength in acute (PAP) and chronic manner (ST) also increase the performance on RSA test
8

The design, construction and evaluation of sprint footwear to investigate increased sprint shoe bending stiffness on sprint performance and dynamics

Vinet, Andrea M. January 2014 (has links)
No description available.
9

Scrum - införandet i en projektorganisation

Wallström, Alexander, Svensson, Jonas January 2016 (has links)
Målet med examensarbetet är att ta reda på förutsättningarna för att implementera Scrum i en projektorganisation. Arbetet går alltså ut på att ta reda på hur en projektorganisation skulle kunna göra när de börjar arbeta med Scrum och vad det skulle kunna få för effekter. Arbetet görs hos Swisslog, en projektorganisation som figurerar i hela världen med kontor i Göteborgsområdet. För examensarbetet är Swisslog endast ett exempelföretag, målet är att se hur det kan införas även på andra projektorganisationer. Till en början utfördes intervjuer med relevant personal inom exempelföretaget samt en form av benchmarking, då besök hos tre andra organisationer med liknande problemställningar gjordes. Intervjuerna var semistrukturerade, och ett antal frågor utformades, frågorna var inte likadana till alla tre företag då de har nått helt olika framgång med sitt Scrumarbete. Det första företaget hade jobbat med Scrum i ca ett år men utan framgång, här kretsade frågorna mest kring hur och varför de inte lyckats fullt ut med sitt Scrumarbete. Det andra företaget hade jobbat med Scrum i ett flertal år och gått igenom hela den fasen som företag nummer ett var mitt uppe i, här kretsade frågorna mer kring vad som har varit de viktigaste faktorerna till att de lyckats så bra med Scrum. Företag nummer tre var ett konsultbolag där vi träffade en organisationskonsult som var specialiserad på agilt förbättringsarbete och Scrum. Vid tiden för detta besök fanns en ganska klar uppfattning om vad Scrum innebar och hur arbetet med Scrum sker. Intervjun gick mer ut på att få tankar bekräftade och få lite tips om hur vi skulle kunna gå vidare. Scrum har visat sig vara ett effektivt verktyg för att leda samt planera flera olika projekt. Det har dock visat sig att detta skulle innebära en stor förändring för företagen då de i dagsläget jobbar med projekten i slutna grupper. Projektorganisationerna skulle behöva lägga stor vikt på att utbilda personalen i hur arbetet med Scrum ska genomföras, då det i dagsläget endast är ett utbrett arbetssätt inom IT-sektionerna. Det har visat sig att Scrum skulle kunna vara ett effektivt verktyg att arbeta med inom projektorganisationer för de gör det lättare att samköra flera projekt med delade resurser istället för att låta varje projekt köras enskilt. Scrum har visat sig vara ett effektivt verktyg vid själva utförandet av projekten, då det ger en väldigt överblickande bild av hur projektet fortgår. Många av Scrumartefakterna kan direkt användas inom en projektorganisation, till exempel kan backloggen direkt översättas till en "att göra lista" där alla projektets delmoment finns specificerade. Under arbetets gång har det inte funnits särskilt många avgränsningar men en stor avgränsning som gör att vi inte kan utvärdera själva implementationen är tid. Projektorganisationer är överlag inte vana vid att använda sig av Scrum och kräver därför mycket utbildning, det kommer garanterat även ta lång tid vid själva implementeringen och därav kan vi inte verkställa våra resultat.
10

A correlation study between vertical jump height and sprint in young female teamgymnasts

Larsson, Emma January 2016 (has links)
Background: Teamgym is a relatively new and emerging sport that originating comes from Scandinavia. Teamgym differs a lot from the most known form of gymnastics, artistic gymnastic. For example artistic gymnastics is an individual sport, while teamgym is performed by 6-12 members in each team. In general gymnasts have to acquire many skills at a very young age like jumping, bouncing and twisting in different directions. A good jumping ability has been linked to a successful performance for gymnasts and is defined by a gymnast’s capacity to jump upwards and then perform series of forward and backward rotations in a successful way. Plyometric is a type of training based on the stretch- shortening cycle (SSC) and is often used to improve an athletes sprint and vertical jump ability. Studies indicate that these two components have been linked to a successful performance in gymnastics but there are no studies that are looking at this correlation in teamgym. Aim: The aim of this study was to investigate how strong the correlation is between the vertical jump height in counter movement jump with arm swing, drop-jump and 20, 25- meters sprint in young female teamgymnasts. Methods: Seventeen (17) female teamgymnasts participated to test their vertical jump ability by using countermovement jump with arm swing (CMJa) and drop-jump (DJ). Their sprint ability was tested through 20 and 25 meter sprint. The highest CMJa and DJ were correlated with the fastest time on 20 and 25 meter sprint. To study the relationship between the vertical jumps and the sprints, Spearman’s rank order correlation (rs) was used in SPSS version 20.0. If the correlation is between 0.30 to 0.49 (-0.30 to -0.49) it is considered as a medium correlation. Anything under these values is a weak correlation and everything above it is strong correlation. Result: CMJa showed a strong significant correlation with both 20 and 25 meter sprint and DJ showed a moderate non-significant correlation with both 20 and 25 meter sprint. When the weight was set as a control variable the CMJa showed a moderate non-significant correlation with both the sprints but DJ showed a strong significant correlation with both 20 and 25 meter sprint. Conclusion: No other studies have looked at the relationship between vertical jump and sprint ability in teamgym but the result of this study somehow reflects findings in studies looking at the same variables. The findings in this study can be useful for gymnastic coaches when they create training programs for their athletes. Coaches and gymnasts will know the value of a good jumping- and sprinting ability and that plyometric- and sprint training can improve the gymnasts skills. More research is needed on this type of gymnastics and future studies should look at these variables in a larger sample size and with more experienced test subjects.

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