Search results for "juoksijat"
showing 10 items of 13 documents
Specific distribution of cross-sectional area in each hamstring muscle of sprint runners and relationship between those and sprint performance
2018
The purpose of the present study was to examine characteristics of muscle anatomical cross-sectional area (CSA) for different regions from proximal to distal parts of each muscle of the hamstring muscles in high-level sprinters, and to examine the relationship with those and the sprint performance. The CSA of the semitendinosus (ST), semimembranosus (SM), biceps femoris long head (BFL) and biceps femoris short head (BFS) at the four different region of hamstring muscles for twenty sprinters (SPRINT) and twenty healthy male control subjects (CTRL) were measured by using B-mode ultrasonography. The measured regions were divided into four parts from proximal to distal parts (PRO1, PRO2, DIS2, …
Iän vaikutus lihasarkkitehtuuriin 16-85-vuotiailla pikajuoksijoilla
2003
Tämän tutkimuksen tarkoituksena oli selvittää ikääntymisen vaikutusta vastuslateraliksen (VL), gastrocnemius medialiksen (GM) ja gastrocnemius lateraliksen (GL)paksuuteen, lihassyykimppujen pennaatiokulmaan sekä pituuteen. Koehenkilöinä oli 9316-85-vuotiasta miespikajuoksijaa, jotka harrastivat kilpailumielessä pikajuoksuaveteraanisarjoissa. Pennaatiokulmat ja lihaspaksuudet mitattiin yhdestä kohdastalihaksen päältä reaaliaikaisella B-mallin ultraäänilaitteella ja lihassyykimpun pituusarvioitiin pennaatiokulman ja lihaspaksuuden avulla.Korrelaatioanalyysi osoitti sekä absoluuttisen että raajan pituuteen suhteutetun lihaksenpaksuuden vähenevän merkitsevästi kaildssa mitatuissa lihaksissa iän…
Juoksun kinematiikka eritasoisilla 1500 m:n juoksijoilla kilpailuvauhdissa
2007
Juoksun kinemaattisten muuttujien ja juoksun taloudellisuuden välisistä yhteyksistä on tehty tutkimuksia, mutta aikaisemmin ei ole vertailtu juoksun kinematiikkaa aidossa kilpailutilanteessa suorituskyvyltään eritasoisten juoksijoiden välillä. Tämän tutkimuksen tarkoituksena oli selvittää, onko juoksun kinematiikassa eroja eritasoisten 1500m:n juoksijoiden välillä aidossa kilpailutilanteessa, ja muuttuuko juoksun kinematiikka kilpailun aikana juoksunopeuden lisääntyessä. Lisäksi selvitettiin mahdollisten ryhmien välisten erojen taustalla olevia tekijöitä kinemaattisten muuttujien välisiä yhteyksiä tarkastelemalla. Mittaukset suoritettiin elokuussa 2005 Helsingin olympiastadionilla järjestet…
Kehollisuuden merkitys suomalaisjuoksijoiden teknologian ei-käytölle
2022
Declining Physical Performance Associates with Serum FasL, miR-21, and miR-146a in Aging Sprinters.
2016
Aging is associated with systemic inflammation and cellular apoptosis accelerating physiological dysfunctions. Whether physically active way of life affects these associations is unclear. This study measured the levels of serum inflammatory and apoptotic molecules, their change over 10 years, and their associations with physical performance in sprint-trained male athletes. HsCRP, cell counts, HGB, FasL, miR-21, and miR-146a were measured cross-sectionally (n=67, 18–90 yrs) and serum FasL, miR-21, and miR-146a and their aging-related associations with physical performance were assessed over a 10-year follow-up (n=49, 50–90 yrs). The cross-sectional study showed positive age correlations for …
Sääriluun distaali- ja varsiosan mineraalimäärä, -tiheys ja geometriset ominaisuudet 40-85-vuotiailla pikajuoksijoilla
2007
Oxygen uptake, acid-base balance and hormonal responses in maximal 300 - 400 m running in child, adolescent and adult athletes
2013
Vilmi, Nikke (2013). Oxygen uptake, acid-base balance and hormonal responses in maximal 300 - 400 m running in child, adolescent and adult athletes. Department of Biology of Physical Activity, University of Jyväskylä, Master's thesis, Science of Sport Coaching and Fitness Testing, 55 pp. The 400 m sprint demands both aerobic and anaerobic energy systems. During the race the acid-base balance of the body is disturbed and that has effects on the oxygen uptake. The purpose of this study was to investigate the oxygen uptake and acid-base balance during and after the maximal anaerobic running test in child (300 m), adolescent (350 m) and adult (400 m) athletes. Furthermore, the aim was also to d…
Effects of a 20-week high-intensity strength and sprint training program on tibial bone structure and strength in middle-aged and older male sprint a…
2017
This randomized, controlled, high-intensity strength and sprint training trial in middle-aged and older male sprint athletes showed significant improvements in mid-tibial structure and strength. The study reveals the adaptability of aging bone, suggesting that through a novel, intensive training stimulus it is possible to strengthen bones during aging. High-load, high-speed and impact-type exercise may be an efficient way of improving bone strength even in old age. We evaluated the effects of combined strength and sprint training on indices of bone health in competitive masters athletes, who serve as a group of older people who are likely to be able to participate in vigorous exercise of th…
Neuromuscular, hormonal and oxidative stress responses to endurance running exercises in well-trained runners
2007
The aim of this study was to investigate to which type of running exercises well trained endurance runners respond more favourably with regard to acute neuromuscular and endocrinological responses and exercise-induced oxidative stress. It was hypothesized that these responses depend on the type of running exercise and relate to the physical characteristics. Altogether nine different running exercises and a long walking exercise were performed by a total of 88 male athletes. An intermittent exercise consisting of progressive 20 s runs decreased vertical jump performance in middle distance runners (MID), but improved it in marathon runners (MAR). An 18 – 24 min exhaustive test run, a 40 min i…