Search results for "Rain"

Compensatory growth in juvenile rainbow trout, Oncorhynchus mykiss (Walbaum), held individually

2004

Abstract The effect of feed cycling on compensatory growth was examined in juvenile rainbow trout, Oncorhynchus mykiss (Walbaum), held individually at 15 °C. Fish were fasted for 2, 4, 8, or 14 days and then refed until either their relative feed intake differed by less than 10% of fed controls, or the duration of the refeeding period was four times the fasting period. After 80 days, fish fasted for 8 days at a time were smaller than controls, or fish experiencing 2 or 4 days of fasting, while fish fasted for 14 days did not differ from other groups. There were no differences in visceral fat or hepatosomatic indices, but within-treatment variation was high. Fish subjected to fasting display…

2021

The purpose of the study was to examine the effects of progressively increased training intensity or volume on the nocturnal heart rate (HR) and heart rate variability (HRV), countermovement jump, perceived recovery, and heart rate-running speed index (HR-RS index). Another aim was to analyze how observed patterns during the training period in these monitoring variables were associated with the changes in endurance performance. Thirty recreationally trained participants performed a 10-week control period of regular training and a 10-week training period of either increased training intensity (INT, n = 13) or volume (VOL, n = 17). Changes in endurance performance were assessed by an incremen…

Heart rate dynamics and lactate following high-intensity race-pace continuous vs interval workouts in highly trained athletes.

2020

AbstractPurposeThe present study aimed to compare the physiological responses of high-intensity race-pace continuous vs. interval workouts commonly used in middle-distance athletics, by means of analyzing post-exercise cardiac autonomic regulation and lactate.MethodsNineteen highly-trained 800-m male runners were asked to run a 600-m race-pace continuous workout and a 2 × 4 × 200-m interval training, counterbalanced and randomized within one week of difference. Blood lactate jointly with linear and nonlinear heart rate dynamics were assessed during the immediate 15-min recovery. Age-category (Under23-Senior vs. Juvenile-Junior) was considered as an inter-subject factor.ResultsPeak lactate w…

Technique and safety aspects of resistance exercises: a systematic review of the literature.

2009

A systematic review of the scientific literature was conducted to identify the optimal ranges of motion for preventing injury in the main joints of the body during resistance exercise performance. These ranges of motion are independent of the type in which the resistance exercises could be applied (ie, adults, elderly, athletes, recreational exercisers), and the regions examined include the shoulder, spine, and knee, which are injured most often. It can be concluded that during the performance of any resistance exercise, it is possible to put anatomical structures at risk with certain body positions; therefore, it is necessary to understand these movements so injury can be avoided.

Muscular failure training in conditioninig neuromuscular programs

2010

Many recommendations for designing of resistance training programs are suggested training all the sets to perform until voluntary fatigue with a maximum load selected, situation known as muscular failure. However, recent evidence has emerged that suggest caution in the prescription of training to failure in both, healthy and performance perspective. This review has addressed to this issue and made a collection of literature and a qualitative analysis of this topic. Final conclusion of this study suggest that implementation of the muscular failure resistance training is not recommended in subjects who trained with healthy goals, because it breaks the acceptable risk-benefit ratio in healthy …

PGC-1 isoforms and their target genes are expressed differently in human skeletal muscle following resistance and endurance exercise

2015

The primary aim of the present study was to investigate the acute gene expression responses of PGC-1 isoforms and PGC-1a target genes related to mitochondrial biogenesis (cytochrome C), angiogenesis (VEGF-A), and muscle hypertrophy (myostatin), after a resistance or endurance exercise bout. In addition, the study aimed to elucidate whether the expression changes of studied transcripts were linked to phosphorylation of AMPK and MAPK p38. Nineteen physically active men were divided into resistance exercise (RE, n = 11) and endurance exercise (EE, n = 8) groups. RE group performed leg press exercise (10 9 10 RM, 50 min) and EE walked on a treadmill (~80% HRmax, 50 min). Muscle biopsies were ob…

The changes in proportion and body composition of a woman practicing group fitness training for three months

2020

Background: Physical activity is an excellent form of prevention of modern diseases. The most popular form of physical activity chosen by women is group fitness activities. Women are most likely to focus on exercises for the lower parts of the body (thighs, buttocks, abdomen). In recent years, dance classes (e.g. Zumba) or exercises on mini trampolines have become very popular. Regular fitness training contributes to positive changes in the proportions and body composition. Aim of the study: The aim of the study was to assess the proportions and body composition of a woman via a 3-month group fitness training program. Case report: The study involved a woman aged 26, participating in fitness…

The Effect of Dexamethasone on Water and Electrolyte Content and on rCBF in Perifocal Brain Edema in Man

1972

The results of clinical studies are reported dealing with the relationship between cerebral edema and regional cerebral blood flow in patients with brain tumor as well as with the effect of dexamethasone on this relationship. rCBF is found to be significantly reduced in brain tissue surrounding brain tumors. Autoregulation as well as cerebrovascular reactivity to PaCO2 is focally or generally impaired. Water content of perifocal white matter is markedly increased. The combination of tissue lactacidosis, low regional blood flow and vasoparalysis seems to be a characteristic finding in this type of local brain edema. The increased local tissue pressure, due to the increased tissue water conte…

Selected Age-Related Disorders

2013

Aged human individuals are frequently affected by various age-related impairments and disorders at once (multimorbidity) making it difficult to investigate and understand the link between aging as key risk factor and single syndromes. In some chapters of this book links have been identified between molecular mechanisms of aging and the pathogenesis of human disorders in the elderly. Here, the focus is put on Alzheimers disease (AD) and cancer. While cancer in many cases can successfully be treated and sometimes even cured by pharmacology and/or surgery, AD is still an incurable deadly disease. Like almost no other disorder the onset of AD is strictly associated with higher age and experienc…

Exercise training intensity and connexin 43 expression in hypertrophic cardiomyopathy.

2017

• Moderate-intensity exercise improved peak oxygen consumption in hypertrophic cardiomyopathy.