Search results for "lihasvoima"
showing 10 items of 121 documents
Heart and Skeletal Muscles: Linked by Autonomic Nervous System.
2019
Background Resting sympathetic hyperactivity and impaired parasympathetic reactivation after exercise have been described in patients with heart failure (HF). However, the association of these autonomic changes in patients with HF and sarcopenia is unknown. Objective The aim of this study was to evaluate the impact of autonomic modulation on sarcopenia in male patients with HF. Methods We enrolled 116 male patients with HF and left ventricular ejection fraction < 40%. All patients underwent a maximal cardiopulmonary exercise testing. Maximal heart rate was recorded and delta heart rate recovery (∆HRR) was assessed at 1st and 2nd minutes after exercise. Muscle sympathetic nerve activity (MSN…
Conditioning hops increase triceps surae muscle force and Achilles tendon strain energy in the stretch-shortening cycle
2018
Postactivation potentiation can improve athletic performance, but the underlying mechanisms are poorly understood. This study investigated the effect of conditioning hops on triceps surae muscle force and tendon strain and its contribution to potentiated stretch-shortening cycle (SSC) performance. Thirty-two subjects participated in two experiments. In both experiments, subjects performed three drop jumps (DJs) after prior conditioning with 10 maximal hops, three unconditioned DJs served as control. Ground reaction forces, kinematics, and triceps surae electromyographic activity were recorded. Ultrasound imaging was used to determine fascicle lengths (FASC) of the gastrocnemius (GM) and sol…
Genetic and environmental contributions to bone structural strength in postmenopausal women
2010
Neuromuscular Performance and Hormonal Profile During Military Training and Subsequent Recovery Period
2019
Introduction Military training loads may induce different physiological responses in garrison and field training and only a little is known about how short-time recovery, lasting a few days, affects neuromuscular fitness and hormonal profile. This study aimed to investigate the effects of garrison and field military service on neuromuscular performance and hormonal profile and to evaluate the effects of a 3-day recovery on those factors. Methods Twenty healthy male soldiers (20 ± 1 years) participated in the study, which consisted of 4 days of garrison training [days (D) 1–4] and 7 days of military field training (Days 5–12) followed by a 3-day recovery period (Day 15). Serum hormone concen…
Acute neuromuscular and hormonal responses to 20 versus 40% velocity loss in males and females before and after 8 weeks of velocity-loss resistance t…
2022
Scientific examination of velocity-based resistance training (VBRT) has increased recently, but how males and females respond to different VBRT protocols or how these acute responses are modified after a period of training is unknown. Habitually resistance-trained males and females followed either a 20 or 40% velocity-loss programme for 8 weeks. Acute squat loading tests (five sets, 70% one-repetition maximum load, 3 min rest) were performed before and after the training period. Tests of maximum neuromuscular performance and blood sampling were conducted before, within 10 min of completion (POST) and 24 h after each acute loading test. Testing included countermovement jump, resting femoral …
Handgrip Strength Cannot Be Assumed a Proxy for Overall Muscle Strength
2018
OBJECTIVES: Dynapenia, low muscle strength, is predictive for negative health outcomes and is usually expressed as handgrip strength (HGS). Whether HGS can be a proxy for overall muscle strength and whether this depends on age and health status is controversial. This study assessed the agreement between HGS and knee extension strength (KES) in populations differing in age and health status.DESIGN: Data were retrieved from 5 cohorts.SETTING AND PARTICIPANTS: Community, geriatric outpatient clinics, and a hospital. Five cohorts (960 individuals, 49.8% male) encompassing healthy young and older individuals, geriatric outpatients, and older individuals post hip fracture were included.MEASURES: …
Monipuolisen liikuntaharjoittelun vaikutus alaraajojen toiminnalliseen lihasvoimaan ja dynaamiseen tasapainoon ikääntyneillä naisilla : satunnaistett…
2004
Fyysisen aktiivisuuden ja lihasvoiman yhteys avun tarpeeseen PADL-toiminnoissa
2004
Effects of military basic training on VO2max, body composition, muscle strength and neural responses in conscripts of different aerobic condition
2019
Summary Study aim: The purpose of this study was to evaluate neuromuscular adaptations in conscripts with different fitness levels (VO2max) during 8 weeks of military basic training (BT). Material and methods: Twenty-four male conscripts (18–21 years) were divided into two groups (Good Fitness [GF] and Low fitness [LF]) based on their VO2max at the beginning of BT. Body mass (BM), fat free mass (FFM) and Fat% were measured after 2, 4, and 7 weeks of training. VO2max, maximal isometric leg press force (MVC), H-reflex (Hmax/Mmax) at rest and V-wave (V/Mmax) during maximal isometric plantarflexion were measured from the soleus muscle at the beginning, after 5, and after 8 weeks of training. Re…
Voimantuotto-ominaisuudet pre- ja postpuberteetti-ikäisillä telinevoimistelijatytöillä
2005
Sonia Hicks. 2004. Voimantuotto-ominaisuudet pre- ja postpuberteetti-ikäisillätelinevoimistelijatytöillä. Liikuntabiologian laitos. Jyväskylän yliopisto. 57s.Naisten telinevoimistelu on kehittynyt hyvin fyysiseksi lajiksi, joka vaatiivoimistelijalta voimaa, tehoa, nopeutta ja liikkuvuutta. Voimistelijoiden voimantuottoominaisuuksiaon yleensä mitattu kenttätestein voimistelusalilla, mutta kenttätestienongelmana on alhainen reliabiliteetti ja validiteetti. Tutkimuksen tarkoituksena oliselvittää eritasoisten (A- ja B- maajoukkue) naistelinevoimistelijoiden voimantuottoominaisuuksienmahdollisia eroja laboratorio- ja kenttätestein pre- ja postpuberteettiikäisillänaistelinevoimistelijoilla. Yhtee…