Search results for "Sky"
showing 10 items of 1603 documents
The role of social interaction during pre-performance routines : An individual zones of optimal functioning (IZOF) perspective
2019
The purpose of the current study was to provide an exploratory account of swimmers’ pre-performance routines prior to a successful performance and the influential role that social interaction plays during this time. Eight swimmers’ descriptions of their pre-performance routines were analyzed using an interpretive thematic analysis to identify salient storylines. Two overarching themes were identified: (a) athletes’ interactions with the social environment; and (b) connection between the social modality and other modalities of a psychobiosocial state. The authors conclude by promoting a move towards more contextualized understandings of pre-performance routines and an acknowledgement of the …
Hermo-lihasjärjestelmän väsyminen submaksimaalisissa lyhytkestoisissa nopeuskestävyysharjoituksissa 400 metrin juoksijoilla
2003
Tiihonen, K. -P. 2003. Hermo-lihasjärjestelmän väsyminen lyhytkestoisissa submaksimaalisissanopeuskestävyysharjoituksissa 400 metrin juoksijoilla. Jyväskylän yliopisto.Liikuntabiologian laitos. Valmennus - ja testausopin Pro gradu –tutkielma.Tämän tutkimuksen tarkoituksena oli tutkia hermo-lihasjärjestelmän (HLJ) vä symistä jasen vaikutusta juoksusuoritukseen lyhytkestoisissa submaksimaalisissa nopeuskestävyys(NK) -harjoituksissa sekä selvittää juoksuvedon pituuden vaikutus edellä mainittuihin tekijöihin,kun juoksumäärä on vakio.Tutkimukseen osallistui viisi suomalaista 400 m:n miesjuoksijaa. He juoksivat satunnaisessajärjestyksessä, 4-8 päivän välein, kolme vetopituudeltaan erilaista harjo…
Kestävyysharjoittelun vaikutukset hermo-lihasjärjestelmän toimintaan ja lihaksen mekaanisiin ominaisuuksiin
2004
Jarmo Rinkinen. 2004. Kestävyysharjoittelun vaikutukset hermo-lihasjärjestelmän toimintaan ja lihaksen mekaanisiin ominaisuuksiin. Jyväskylän yliopisto. Liikuntabiologian laitos. Biomekaniikan pro gradu –tutkielma. 58 s. + liitteet Kestävyyssuorituksessa hermo-lihasjärjestelmän kyky työskennellä väsyneessä tilassa vaikuttaa kestävyyssuorituksen tasoon. Kestävyysharjoittelussa pyritään kehittämään elimistön kykyä sietää suorituksen aiheuttamia muutoksia hermo-lihasjärjestelmässä sekä hengitys- ja verenkiertoelimistössä. Tämän tutkimuksen tavoitteena on selvittää kestävyysjuoksuharjoittelun vaikutuksia hermo-lihasjärjestelmän suorituskykyyn ja akuutteihin väsymismekanismeihin sekä lihas-jänne…
Effects of hormonal contraceptives on physical performance and body composition
2016
The purpose of the present study was to examine the effects of hormonal contraceptive use on neuromuscular, cardiorespiratory and body composition adaptations following combined strength and endurance training period. Methods. Nineteen recreationally active women; 11 who had at least one year of hormonal contraceptive use (age 294 yr; BMI 212 kg/m2; VO2max 444 ml/kg/min) and 8 who had never used hormonal contraceptives (age 315 yr; BMI 222 kg/m2; VO2max 414 ml/kg/min) participated in the present study of combined strength and endurance training for 10 weeks. Training consisted of two maximal and explosive strength training sessions, and two high-intensity interval training sessions pe…
Associations of serum 25(OH)D levels with physical performance and anabolic hormones in young men
2023
Purpose: The present study examined the association of vitamin D measured by serum 25(OH)D with physical performance outcomes and serum levels of anabolic hormones in young men.Methods: 412 young men (age 19 ± 1 year) entering their compulsory military service volunteered to participate in the study. The study consisted of two groups from two different military bases: Group A was studied in January and group B in July. The groups were first compared with each other and due to statistically significant (p < 0.001 analyzed with independent samples t-test) differences in physical condition (sit-up, push-up, and standing long jump-tests and testosterone levels) between the groups, groups…
Motives for competitive sports participation in masters track and field athletes : Impact of sociodemographic factors and competitive background
2022
Objectives Masters athletes due to their lifelong engagement in sport represent a unique group to study motivation for regular physical activity, but there is less scientific data on the sport motives in masters athletes. Therefore, the aim of this study was to evaluate the association of age, sex, education, nationality, competitive background and training amount with sport motives of masters track and field athletes. Methods 811 (254 women) athletes aged 35–89 years participated in European Veterans Athletics Championships in the year of 2000. Sport motives were assessed with a questionnaire and categorized into1) well-being, 2) competitive and performance 3) health and fitness motives. R…
Neuromuscular and hormonal adaptations to resistance training : special effects of time of day of training
2009
The majority of the processes in human physiology and behaviour exhibit daily variation. Neuromuscular performance has been repeatedly shown to be lower in the morning hours compared to the rest of the day. However, the scientific data available provide somewhat conflicting results on the origin and mechanisms of diurnal variation in maximum strength and power. In addition, very limited scientific evidence exists as to whether this diurnal variation can be diminished by time-of-day-specific resistance training.The present study was designed to obtain more information on the mechanisms behind both diurnal variation in muscle strength and power, and the mechanisms behind adaptations to time-o…
Effects of Repeated Sprint Training in Hypoxia on Physical Performance Among Athletes : A Systematic Review
2021
Repeated sprint training in hypoxia (RSH) represents an innovative method in the process of development and improvement of physical performance among athletes. However, there is less scientific data on this topic. The purpose of this systematic review was to investigate the effect of RSH method on motor abilities and performance among athletes, obtain new information, and expand the already known conclusions. The data search was performed of 4 electronic databases for the years 2000-2021 May as follows: Google Scholar, PubMed, Web of Science, and ResearchGate. This search with English language restriction was made by using the following terms, individually/combination: "repeated sprint abil…