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Publications (8)3.17 Total impact

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    ABSTRACT: The purpose of presented study was to verify the influence of aerobic physical activity program on the serum insulin, insulin-like growth factor-1 (IGF-1) and insulin-like growth factor binding protein-3 (IGFBP-3) concentrations in overweight and obese postmenopausal women. Somatic parameters and serum concentrations of insulin, IGF-1 and IGFBP-3 were measured in 21 overweight and obese women, before and after 8-week cycloergometer physical workout and 16 age-matched, controls. Age of all studied women ranged from 54 to 78 years. The comparative analysis of biochemical indices measured before and after the training program showed that the systematic exercise cause the significant decrease in insulin (P<0.05) and IGF-1 concentrations (P<0.05). There were no differences in these parameters in controls over the studied period. The level of IGFBP-3 was not significantly changed in both investigated groups. In women participating in the training program the positive correlation (P<0.05) between changes in IGF-1 levels (Δ) and changes in insulin concentrations (Δ) within two terms of the study were found. The magnitude of changes (Δ) in insulin and IGF-1 levels over the study period correlated with their concentrations measured before the training program (P<0.01). Results of the present study indicate that regular aerobic physical activity decreases serum insulin and IGF-1 levels in postmenopausal women. The magnitude of insulin and IGF-1 concentration changes depend on their initial levels. Changes of IGF-1 levels are associated with insulin concentration modifications.
    The Journal of sports medicine and physical fitness 09/2011; 51(3):525-32. · 0.76 Impact Factor
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    ABSTRACT: The aim of this study was to assess and compare the levels of aerobic performance of young football players in various periods of an annual training macrocycle. The study covered a group of fifteen 14-15-year-old football players of KKS Lech Poznań S.A. The study was carried out on five dates in key moments of the time frame of the annual training cycle (the beginning and the end of the basic preparatory period, the end of the spring round of the starting period and the beginning and the end of the autumn round of the starting period). In order to establish the level of aerobic performance the subjects performed an exercise test with increasing intensity on a Woodway treadmill with a 5% elevation. The initial speed of the treadmill belt was 8 km•h-1 and was increased every three minutes by 2 km•h-1 until exhaustion. During the exercise test the following physiological indicators were recorded on an ongoing basis using the Cardio Pulmonary Exercise computer system (Medical Graphics Corporation, USA): •VO2, •VO2•kg-1, VE, •VO2•HR-1, RQ, as well as the running speed (V) and the distance covered. The values of parameters obtained at the level of the ventilatory threshold and with maximum load were analysed. In order to test the significance of differences in mean values between five dates of tests, Friedman’s non-parametric analysis of variance (ANOVA) was used. The significance of differences between successive dates of tests was tested using post-hoc Friedman’s ANOVA test. The tests showed significant differences in aerobic performance of young footballers in individual periods of the annual training cycle. The most favourable changes in terms of exercise adaptation of the participants were noted after the basic preparatory period. Then statistically significant changes were noted in the majority of the tested physiological parameters both with maximum load (MAX) and at the level of the ventilatory threshold (VT). In starting periods, probably as a result of a shift in training emphasis towards special loads, their gradual regression was noted.
    Biology of Sport 01/2011; · 0.53 Impact Factor
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    ABSTRACT: Back ground. The goal of the paper was to evaluate the effect of 7-day training in high mountains on the aerobic and anaerobic fitness parameters in alpine skiers as well as the extent and direction of changes in rest nucleotide concentration and metabolic reaction to test exercise. Material and methods. The sample comprised seven males training alpine skiing. The study of aerobic and anaerobic fitness was conducted twice, before the trip to the glacier and immediately after return. The evaluation of aerobic fitness was based on the values of aerobic threshold pathways and the oxygen threshold (VO2max). The parameters were determined using a portable ergospirometer Oxycon Mobile during the treadmill test performed with increasing intensity. 30-second Wingate test was applied for defining oxypurine concentration. During each test, performed under rest and exercise conditions, the blood level of oxypurines, hypoxanthine, xanthine and uric acid was assayed; lactate (LA) concentration and selected parameters of acid-base balance (ABB) were assayed in the capillary blood. Results. VO2max level during the first and the second test was 47.82±6.02 and 48.21±6.07 ml/kg/min respectively and did not significantly change. After the treadmill exercise test, a significant increase in LA and ABB parameters. The applied training resulted in significant increase (p<0.05) in anaerobic fitness, measured as the value of maximal power in W/kg to 9.74±0.71 and 10.39±0.86 respectively, before and after the event. The training did not cause significant changes in rest and post-exercise values of the measured biochemical parameters. Conclusions. The seven -day training in high mountains favourably affected anaerobic fitness of the skiers without marked changes in the level of their aerobic fitness. The 7-day event was too short to improve exercise metabolism and circulatory-respiratory fitness of the athletes.
    Polish Journal of Sports Medicine. 10/2010; 26(5):267-276.
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    ABSTRACT: The aim of the study was to investigate whether appropriate rehabilitation program in the postoperative period can further improve pulmonary function and increase physical performance in patients with idiopathic scoliosis.The study group consisted of 16 adolescent girls in average 2.3 years after surgical treatment of scoliosis. Patients participated in a 4-week, intensive rehabilitation program. Before the rehabilitation program (Term I) and directly after completing it (Term II) patients performed a spiroergometry with intensity increasing up to the ventilatory threshold and a resting spirometry to assess their physical performance. Additionally, patients’ maximal oxygen uptake (VO2max) was determined indirectly. The results of the exercise test performed at the beginning of the study were used to select individual loads for the endurance training. The workload at which the ventilatory threshold was reached and the value of VO2max were significantly higher during the ergometry at Term II, which indicates that patients’ physical performance improved during the rehabilitation program. Ventilatory and circulatory parameters did not differ between exercise tests at Term I and II. Similar response of the cardiopulmonary system to submaximal exercise at greater work load proves increased physical performance. Vital capacity was similar at Term I and II. Maximal voluntary ventilation increased significantly following the rehabilitation program, but was still lower than the predicted value. Rehabilitation training in girls after surgical treatment of scoliosis caused an important increase in the physical performance capacity, which most probably was the result of the endurance training of individually selected intensity.
    Biology of Sport 07/2009; · 0.53 Impact Factor
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    ABSTRACT: The aim of the study was to assess the influence of an 8-week aerobic physical activity program on oxidative stress markers, antioxidant parameters, and selected metabolic parameters in healthy, postmenopausal women. The study was carried out in a group of 41 healthy women (mean age 65 years) participating in an 8-week cycle ergometer physical workout of moderate intensity. Before and after completing the training program, the following parameters were assessed: total antioxidant status (TAS) and concentrations of thiobarbituric acid reactive substances (TBARS) in plasma, serum levels of antibodies against oxidatively modified low-density lipoproteins (LDL) (oLAB), serum concentrations of glucose, high-density lipoprotein cholesterol (HDL-C), triglycerides (TG), insulin, and reduced glutathione (GSH) concentrations in red blood cells (RBC). Atherogenic index of plasma (AIP) and insulin resistance index (HOMA(IR)) were calculated. The 8-week aerobic physical activity program resulted in significant decrease (p<0.01) in serum glucose and LDL-cholesterol (LDL-C) levels, plasma TBARS concentrations (p<0.05), and in significant decrease of HOMA(IR) (p<0.01). TAS of plasma and GSH concentrations in RBC increased significantly (p<0.01) over the study period. The results show that an 8-week aerobic training enhanced insulin sensitivity, and improved the balance between oxidants and antioxidants in healthy, postmenopausal women.
    Archives of gerontology and geriatrics 12/2008; 49(1):e67-71. · 1.36 Impact Factor
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    ABSTRACT: Background. The aim of the study was to compare the antioxidant potential in the preparatory period with the antioxidant potential in the competitive period in sprinters. Material and methods. Twelve sprinters of the national team were examined twice: at the and of the general preparation subphase and just after the competitve subphase (immediately after indoor competition). An incremental exercise protocol for endurance capacity was conducted on the treadmill. Before and after the test, capillary (fingertip) and venous (elbow vein) blood was taken. The antioxidant potential of plasma, i. e. ferric reducing ability of plasma (FRAP) and thiobarbituric acid-reactive substances in serum (TBARS), were measured by means of enzymatic method on spectrophotometer. The concentration of allantoin (All) was determined using HPLC-method. Results. In the competitive period, examined sprinters showed lower average level of maximal oxygen uptake and longer time of reaching anaerobic threshold than in the preparatory period. In the competitive period, pre-exertion concentrations of TBARS and All were lower and pre-exertion concentration of FRAP were higher than in the preparatory period. Conclusions. The executed speed-power training was brought about the decline of aerobic capacity in sprinters as well as resulted in a distinct shift of the anaerobic threshold towards higher test loads. The changes in biochemical parameters during the test exertion indicate that the specific training had a positive effect on the antioxidative potential of examined athletes in the competitive period.
    Polish Journal of Sports Medicine. 01/2008; 24(4):213-223.
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    ABSTRACT: The aim of the study was to assess pulmonary function in patients after spinal fusion combined with thoracoplasty in comparison with subjects in whom thoracoplasty was not performed, but who underwent intensive rehabilitation. MATERIAL NA DMETHODS: The study population consisted of two groups of adolescent girls about two years after surgical correction of scoliosis by Cotrel-Dubousset method. The subjects in the first group (thoracoplasty group) underwent spinal fusion in combination with thoracoplasty, which consisted in subperiosteal resection of deformed segments of six ribs on top of the rib hump. Patients in the second group (rehabilitation group) had no thoracoplasty, but participated in a 4-week rehabilitation programme based on endurance training. Pulmonary function was assessed in all subjects with resting spirometry. Additionally, maximal oxygen uptake was determined using an indirect method. Spirometric parameters at rest were significantly higher in subjects participating in the rehabilitation program compared to the thoracoplasty patients. VO2max values were similar in both groups, indicating relatively good exercise capacity. Comprehensive motor rehabilitation based on endurance training has a favorable influence on pulmonary function in patients after surgical correction of scoliosis. A rehabilitation program should be included in the management of patients after spinal fusion combined with thoracoplasty.
    Ortopedia, traumatologia, rehabilitacja 11(6):513-9.
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    ABSTRACT: The aim of study was to investigate the association between oxidative stress and anthropometric and metabolic parameters in middle-aged, overweight or obese women. Venous blood samples were taken from each subject after an overnight fast, and the following parameters were assessed: plasma total antioxidant status (TAS), plasma concentrations of thiobarbituric acid reactive substances (TBARS), serum levels of antibodies against oxidized low density lipoproteins (oLAB), serum lipid profiles, and serum glucose and insulin concentrations. Additionally, serum low density lipoprotein (LDL) cholesterol and insulin resistance indices and atherogenic index of plasma (AIP) were calculated. Correlations were noted between plasma thiobarbituric reactive substances (TBARS), antibodies to oxidized LDL (oLAB), and total antioxidant status (TAS); and blood pressure (BP), insulin resistance parameters and lipids profile. The levels of antibodies to oxidatively modified low-density lipoproteins oLAB correlated with systolic and diastolic BP, TAS correlated negatively with the atherogenic index of plasma (AIP). An association was found between oxidative stress and BP, and lipid risk factors in obese and overweight women.