Seasonal and annual changes in physical performance capacity of elite athletes
Julkaistu sarjassaJyväskylän yliopisto. Liikuntabiologian laitos. Research report
Seasonal and annual changes in physical performance characteristics of 10 female and 28 male cross-country skiers, 5 male nordic combination skiers and 7 male skijumpers were studied. Following parameters were investigated on most of the athletes: maximal oxygen uptake (maxVo₂) in leg and arm work, vertical running velocity (Vv), total isometric leg force (TLF), percentage of slow twitch muscle fibers (%ST fibers) and succinate dehydrogenase activity (SDH) in m. vastus lateralis. The measurements were made between the spring of 1973 and winter of 1976. The yearly measurement times were spring (the beginning of the basic training period), autumn (a change from the basic training period to special training period of each event) and winter (competitive season). The maxVo₂ of the cross-country skier groups increased by 4,7 - 9.9 % from spring to winter and by 3.1 - 4.6 % annually. In arm work maxVo₂ of the same subjects increased by 5.6 - 13.8 % from spring to winter and by 4.2 - 5.9 % annually. The nordic combination skiers increased annually their maxVo₂ in leg by 1.7 % and in arm work by 5.7 %. The SDH activity of the male and female skiers increased by 32.7 % and 40.3 % from spring to winter and the annual increases were 29.8 % and 16.2 %, respectively. The nordic combination skiers increased their SDH activity by 42.5 % annually. The TLF of the nordic combination skiers and ski4umners increased annually by 24.8 % and 29.1 % and the annual increases in Vv were 16.1 % and 8.3 %, respectively. Annual increases in maxVo2, SDH activity, Vv and TLF were not related to the initial level in each parameter. The %ST fibers of no groups changed during the investigation period. Instead, the annual increases in maxVo₂ were positively related to %ST fibers. ...
MetadataNäytä kaikki kuvailutiedot
- Digitoidut julkaisut 
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
Effects of weight reduction on body composition, hormone concentrations and physical performance in female track and field jumpers during a preparatory and competition season Lällä, Sini (2019)Introduction. Weight reduction is common and generally accepted among obese people, but nowadays also a general practice among athletes. There are many reasons for athletes to reduce weight: to increase physical performance, ...
Seasonal variations in endurance performance, and aerobic and anaerobic variables in competitive cross country skiers Hecker, Jeremy (2016)Cross country skiing is known as an endurance sport and both aerobic and anaerobic systems have a major impact on performance in cross country skiers. Coaches and athletes use periodized training programs to optimize ...
Changes in the neuromuscular and cardiorespiratory performance during the competitive season in early and late matured 14-15- year old male ice hockey players Laaksonen, Antti (2012)Ice hockey as a game is metabolically very demanding, and well trained aerobic and anaerobic metabolism is needed. Adolescent players have their own schedule according to growth and maturation. There might be huge differences ...
Physical performance, heart rate variability and hormone concentrations in cross-country skiers throughout the season Lajunen, Kimmo (2016)Cross-country skiing is an extremely demanding and versatile competitive sport. Fairly little is known about changes in basal hormonal concentrations and function of the autonomic nervous system throughout the season. ...
Resistance Training Acutely Impairs Agility and Spike-Specific Performance Measures in Collegiate Female Volleyball Players Returning from the Off-Season Doma, Kenji; Connor, Jonathan; Gahreman, Daniel; Boullosa, Daniel; Ahtiainen, Juha P.; Nagata, Akinori (MDPI AG, 2020)This study examined the acute effects of resistance training (RT) on volleyball-specific performance. Sixteen female volleyball players undertook their initial, pre-season RT bout. Countermovement jump (CMJ), delayed onset ...