Effect of Low vs. High Carbohydrate Intake after Glycogen-Depleting Workout on Subsequent 1500 m Run Performance in High-Level Runners.

Carbohydrate (CHO) metabolism is crucial for short-duration, high-intensity exercise performance, but the effects of variations in glycogen availability have not been investigated in field trials of trained athletes. This study was designed to test how 1500 m time trial (TT) performance is affected by the manipulation of pre-race glycogen reserves. Competitive middle-distance runners ( = 11 (4 females)) completed a 1500 m individually paced indoor TT after abundant (high, >5 g/kg/d) or restricted (low, <1.

Low- and high-intensity one-week occlusion training improves muscle oxygen consumption and reduces muscle fatigue.

Background: Low-intensity resistance exercises with blood flow restriction have been shown is effective to increase muscular strength and hypertrophy. However, the effects of combined training: one-week occlusion training with various exercise intensities by using less occlusion pressure on muscle strength improvement, fatigability and their work capacity are not clear.

Methods: Participants (N.

Effect of Electrical Myostimulation on the Function of Lower Leg Muscles.

Electrical myostimulation (EMS) method is applied to improve skeletal muscle function. The aim of this study was to evaluate the efficacy of EMS applied to the sole and calf muscles on their strength and on maximal sprint performance. Each of 10 training sessions involved 10 seconds of stimulation and 50 seconds of rest for a total of 10 minutes.

Cardiovascular changes during the performance by nonathletes of Bosco repeated jumps anaerobic test.

Objective: The aim of this study was to find out the characteristics of cardiovascular changes when performing Bosco repeated jumps anaerobic test depending on the duration of jumping in a nonathletes cohort.

Materials And Methods: Changes in arterial blood pressure indices and changes in 12-lead ECG indices were analyzed. The characteristics of recovery after workloads were assessed by evaluating the time of half period of recovery of registered indices and by the Lyapunov exponent.

Functional state assessment on the dynamics of interparametric concatenations during exercise tests.

The aim of this study was to complement an analytical approach by new methodology of data sequences analysis of muscular and cardiovascular indices during the assessments of functional state. The participants of the study were 14 elite Greco-roman wrestlers and they underwent two exercise tests 30 squats per 45 s while 12-lead ECG was recorded continuously and 30-s vertical jumps test while the height, contact and flight times of each jump recorded. The parametric interactions parameters and their sequences analysis based on a mathematical method founded upon a matrix theory were applied.

Mobilization of cardiovascular function during the constant-load and all-out exercise tests.

The problem of evaluating the mobilization of body functioning during exercise combines two questions: first, the velocity of adaptation at onset of exercise, and second, to what extent the body function was mobilized. The aim of this study was to find out the peculiarities in mobilization of cardiovascular function during constant-load and all-out exercise tests in non-athletes and sportsmen: cohorts of sprinters, endurance and combat athletes. Every subject underwent a Roufier's test (30 squats per 45 seconds), a 30-second duration maximal vertical jump test, and a bicycle ergometry (graded stress).