Search results for "Juoksu"
showing 10 items of 119 documents
Changes in sprint performance and sagittal plane kinematics after heavy resisted sprint training in professional soccer players
2019
Background Sprint performance is an essential skill to target within soccer, which can be likely achieved with a variety of methods, including different on-field training options. One such method could be heavy resisted sprint training. However, the effects of such overload on sprint performance and the related kinetic changes are unknown in a professional setting. Another unknown factor is whether violating kinematic specificity via heavy resistance will lead to changes in unloaded sprinting kinematics. We investigated whether heavy resisted sled training (HS) affects sprint performance, kinetics, sagittal plane kinematics, and spatiotemporal parameters in professional male soccer players.…
Kehollisuuden merkitys suomalaisjuoksijoiden teknologian ei-käytölle
2022
A New Fitness Test of Estimating VO2max in Well-Trained Rowing Athletes
2021
BackgroundThis study was designed to investigate the validity of maximal oxygen consumption (VO2max) estimation through the Firstbeat fitness test (FFT) method when using submaximal rowing and running programs for well-trained athletes.MethodsWell-trained flatwater rowers (n = 45, 19.8 ± 3.0 years, 184 ± 8.7 cm, 76 ± 12.9 kg, and 58.7 ± 6.0 mL⋅kg–1⋅min–1) and paddlers (n = 45, 19.0 ± 2.5 years, 180 ± 7.7 cm, 74 ± 9.4 kg, and 59.9 ± 4.8 mL⋅kg–1⋅min–1) completed the FFT and maximal graded exercise test (GXT) programs of rowing and running, respectively. The estimated VO2max was calculated using the FFT system, and the measured VO2max was obtained from the GXT programs. Differences between the…
"That is why I gave in to age my competitive ability but not my soul!" : a spiritual journey in endurance running
2011
In this article, I explore the spiritual dimensions of running. I draw on theological and existential perspectives, athletic career research as well as post-sport ideologies to construct a multi-voiced representation of the spiritual meanings of endurance running current in Finnish running culture(s). Through narrative, analysis, reflexivity, interpretation and theorizing this study aimed to gain a deeper understanding of how distance runners negotiate dominant discourses on sport and exercise in the process of making running meaningful to them. In the analysis I examined the Finnish runner’s magazine Juoksija for the years 2001-2010. Over this time span studied, I found a variety of data d…
Representationer av löpning i svenskspråkiga löparbloggar
2015
Tämän tutkimuksen tarkoituksena oli selvittää, miten juoksuharrastusta representoidaan ruotsinkielisissä juoksublogeissa. Aineistona toimi 131 blogikirjoitusta, jotka on julkaistu kolmen taustoiltaan ja juoksutottumuksiltaan erilaisen juoksuharrastajan blogeissa tammi–kesäkuussa 2015. Tutkimuksen teoreettisena viitekehyksenä toimivat Giddensin ja Schillingin sosiologiset teoriat, joiden mukaan ruumis on myöhäismodernissa yhteiskunnassa elävälle ihmiselle projekti, jota toteuttamalla ihminen rakentaa identiteettiään. Vertailupohjana tutkimuksen tuloksille käytettiin juoksumotiiveja ja juoksun merkityksiä koskevia tutkimuksia. Tutkimuksen menetelmä pohjautuu Fairclough'n kriittisen diskurssia…
Effects of medially posted insoles on foot and lower limb mechanics across walking and running in overpronating men.
2017
Anti-pronation orthoses, like medially posted insoles (MPI), have traditionally been used to treat various of lower limb problems. Yet, we know surprisingly little about their effects on overall foot motion and lower limb mechanics across walking and running, which represent highly different loading conditions. To address this issue, multi-segment foot and lower limb mechanics was examined among 11 over-pronating men with normal (NORM) and MPI insoles during walking (self-selected speed 1.70 +/- 0.19 m/s vs 1.72 +/- 0.20 m/s, respectively) and running (4.04 +/- 0.17 m/s vs 4.10 +/- 0.13 m/s, respectively). The kinematic results showed that MPI reduced the peak forefoot eversion movement in …
Evaluation of nocturnal vs. morning measures of heart rate indices in young athletes
2022
Purpose The purpose of this study was to compare heart rate (HR) and heart rate variability in young endurance athletes during nocturnal sleep and in the morning; and to assess whether changes in these values are associated with changes in submaximal running (SRT) and counter-movement jump (CMJ) performance. Methods During a three-week period of similar training, eleven athletes (16 ± 1 years) determined daily HR and heart rate variability (RMSSD) during sleep utilizing a ballistocardiographic device (Emfit QS), as well as in the morning with a HR monitor (Polar V800). Aerobic fitness and power production were assessed employing SRT and CMJ test. Results Comparison of the average values fo…
Transversus abdominis and multifidus asymmetry in runners measured by MRI: a cross-sectional study
2019
ObjectiveThe transversus abdominis muscle (TrA) is active during running as a secondary respiratory muscle and acts, together with the multifidus, as trunk stabiliser. The purpose of this study was to determine size and symmetry of TrA and multifidus muscles at rest and with contraction in endurance runners without low back pain.DesignCross-sectional study.SettingA medical imaging centre in Melbourne, Australia.ParticipantsThirty middle-aged (43years±7) endurance-trained male (n=18) and female (n=12) runners without current or history of low back pain.Outcome measuresMRI at rest and with the core engaged. The TrA and multifidus muscles were measured for thickness and length (TrA) and antero…
Individual and combinatory effects of voluntary wheel running and sActRIIB-Fc administration on redox-balance in mdx mice
2015
Duchenne’s muscular dystrophy (DMD) is X-chromosome linked muscle wasting dis-ease. It is caused by a mutation in the gene coding protein called dystrophin leading to premature death and significantly impairing the quality of life of DMD patients. Oxida-tive stress is a contributing factor in the pathology of DMD. Light intensity exercise and interventions that promote sirtuin (SIRT) 1 activity have been shown to be antioxidant for mdx mice and to ameliorate the symptoms of DMD. Also blocking activin receptor IIB (ActRIIB) ligands has been shown in some, but not all studies to improve the pa-thology of the DMD. The purpose of this study was to find out the individual and com-binatory effect…
Sadan metrin lajianalyysi: erityisesti biomekaniikka ja valmennuksen ohjelmointi
2010
Okkonen, Olli. Sadan metrin lajianalyysi: erityisesti biomekaniikka ja valmennuksen ohjelmointi. Valmennus- ja testausoppi, VTE.A008. Liikuntabiologian laitos, Jyväskylän yliopisto, s. 66. 2009. Biomekaniikka. Sadan metrin juoksu voidaan jakaa ainakin neljään vaiheeseen: telinevaihe, kiihdytysvaihe, maksiminopeuden vaihe ja hidastumisvaihe. Telinevaiheen voimantuottoaika hyvillä pikajuoksijoilla on yleensä 310 370 ms, josta etujalka osallistuu voimantuottoon lähes koko ajan ja takajalka noin 120 180 ms. Eri tutkimuksissa etujalan polvikulman keskiarvoiksi on saatu 89 111 ° ja takajalan 118 136 °. Hyvien ja keskitason juoksijoiden polvikulmissa valmiit-asennossa ei ole huomattu olevan merk…