Search results for "Exercise performance"

Effect of Running Exercise on Oxidative Stress Biomarkers: A Systematic Review

2021

Background: Exercise induced health benefits are limited by the overaccumulation of reactive oxygen species (ROS). ROS and further oxidative stress could potentially induce muscle damage which could result in poor exercise performance. However, predicting ROS induced oxidative stress in response to endurance training has several limitations in terms of selecting biomarkers that are used to measure oxidative stress.Objective: The purpose of this study was to systematically investigate the suitable biomarkers that predict oxidative stress status among runners.Methods: According to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement, a search for relevant …

Heavy vs Light Load Single-Joint Exercise Performance with Different Rest Intervals

2017

Abstract The aim of the study was to compare the effect of three distinct rest period lengths between sets of upper body single-joint exercise with different load zones and volume designed for either endurance or hypertrophy (50% or 80% of 1-RM). Sixteen trained men (20.75 ± 2.54 years; 76.35 ± 5.03 kg; 176.75 ± 3.33 cm, 24.53 ± 1.47 kg/m2) performed a test and retest of 1-RM on non-consecutive days. Forty-eight hours after load testing, the participants were randomly assigned to six sessions consisting of four sets of the triceps pull-down, combining different intensities with distinct rest periods between sets. The shorter 1 minute rest promoted a significant reduction in the total repeti…

Changes in Exercise Performance and Hormonal Concentrations Over a Big Ten Soccer Season in Starters and Nonstarters

2004

As a consequence of the physiological demands experienced during a competitive soccer season, the antagonistic relationship between anabolic and catabolic processes can affect performance. Twenty-five male collegiate soccer players were studied throughout a season (11 weeks) to investigate the effects of long-term training and competition. Subjects were grouped as starters (S; n = 11) and nonstarters (NS; n = 14). Measures of physical performance, body composition, and hormonal concentrations (testosterone [T] and cortisol [C]) were assessed preseason (T1) and 5 times throughout the season (T2-T6). Starters and NS participated in 83.06% and 16.95% of total game time, respectively. Nonstarte…

The Effect of a Ketogenic Low-Carbohydrate, High-Fat Diet on Aerobic Capacity and Exercise Performance in Endurance Athletes: A Systematic Review and…

2021

A low-carbohydrate, high-fat (LCHF) diet has been proposed to enhance the fat utilization of muscle and the aerobic capacity of endurance athletes, thereby improving their exercise performance. However, it remains uncertain how the macronutrient intake shift from carbohydrate to fat affects endurance exercise training and performance. This study performed a systematic review and meta-analysis to explore the effects of a ketogenic low-carbohydrate, high-fat (K-LCHF) diet on aerobic capacity and exercise performance among endurance athletes. Searches were carried out in five electronic databases, and we followed the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) gu…

Heart rate acceleration at relative workloads during treadmill and overground running for tracking exercise performance during functional overreaching

2020

AbstractMaximal rate of heart rate (HR) increase (rHRI) as a measure of HR acceleration during the transition from rest to exercise, or during an increase in workload, tracks exercise performance. rHRI assessed at relative rather than absolute workloads may track performance better, and a field test would increase applicability. This study therefore aimed to evaluate the sensitivity of rHRI assessed at individualised relative workloads during treadmill and overground running for tracking exercise performance. Treadmill running performance (5 km time trial; 5TTT) and rHRI were assessed in 11 male runners following 1 week of light training (LT), 2 weeks of heavy training (HT) and a 10-day tap…

Medical evaluation of athletes: Exercise testing

2020

Exercise testing in athletes is used to (a) evaluate baseline fitness and prescribe an exercise program or training zones, (b) evaluate continued progress after engaging in exercise training over a period of time, (c) diagnose cardiopulmonary conditions affecting exercise performance, and, (d) provoke arrhythmias or evaluate hemodynamic response to exercise in an athlete with a known cardiovascular condition to determine whether it is safe to participate in competitive sports. Exercise testing is not part of routine pre-participation (PPS) screening; however, it can supplement the clinical work-up of athletes with pathological findings during PPS and/or with symptoms. In several conditions …

Occlusal Splints and Exercise Performance: A Systematic Review of Current Evidence

2021

The role of the dento-mandibular apparatus and, in particular, occlusion and jaw position, received increased attention during last years. In the present study, we aimed to systematically review, on the light of the new potential insights, the published literature covering the occlusal splint (OS) applications, and its impact on exercise performance. A structured search was carried out including MEDLINE®/PubMed and Scopus databases with additional integration from external sources, between March and June 2021. To meet the inclusion criteria, studies published in the English language, involving humans in vivo, published from 2000 to 2021 and that investigated the role of occlusal splints on …

Exercise performance in hypertensives: felodipine vs cilazapril cross-over study

1999

The Importance of Lipidomic Approach for Mapping and Exploring the Molecular Networks Underlying Physical Exercise: A Systematic Review

2021

Maintaining appropriate levels of physical exercise is an optimal way for keeping a good state of health. At the same time, optimal exercise performance necessitates an integrated organ system response. In this respect, physical exercise has numerous repercussions on metabolism and function of different organs and tissues by enhancing whole-body metabolic homeostasis in response to different exercise-related adaptations. Specifically, both prolonged and intensive physical exercise produce vast changes in multiple and different lipid-related metabolites. Lipidomic technologies allow these changes and adaptations to be clarified, by using a biological system approach they provide scientific u…

Dietary acid load and acid-base balance in exercise and health from adolescence to late adulthood

2018

This thesis investigated whether dietary acid load has either short-term (4 to 7 days) or prolonged (12 weeks) effects on acid-base status at rest and during submaximal and maximal aerobic exercise; whether the effects of dietary acid load on acid-base status differ between adolescents, young adults and the elderly, and between men and women; and whether the changes in acid-base balance have a further effect on aerobic exercise performance. These questions were addressed in three different study settings in healthy and recreationally active men and women. In studies 1 and 2, which followed a crossover study design, participants were assigned in randomized order to follow a diet with a low o…