Katarzyna Kochan
Biographic Data
| ID | 86341 |
|---|---|
| NAME | Katarzyna Kochan |
| GIVEN NAMES | Katarzyna |
| FAMILY NAME | Kochan |
| SIGNATURE | KOCHAN K |
| AFFILIATIONS | Wroclaw University of Health and Sport Sciences |
| ORCID | 0000-0003-2632-3556 |
| VERIFIED | Yes |
| TOTAL WORKS | 7 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 7 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2018 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 0 |
Which Age Matters? Comparing Chronological and Biological Age in Adolescent Adaptation to School-Based Physical Activity Interventions (Wrocław Peer-Heart Study)
Background/Objectives: Relative age differences within the same school year may influence adolescents' physiological adaptations to physical activity programs. While biological maturity (maturity offset, MO) is often considered a more relevant indicator than chronological age (CA), empirical evidence from school-based interventions remains limited. This study aimed to compare the predictive value of CA and MO in explaining health-related adaptati…
Association between expression level of the miR-320, miR-182, miR-223 and miR-486 and body composition among young Polish female volleyball players
The expression of circulating microRNAs appears to be a promising indicator of physical strength. The objective of this study was to determine whether there is an association between the expression level of four selected microRNAs and body composition over time among young female volleyball players. Blood samples and body composition measurements were taken from 7 females who are Polish volleyball players before and after 5 matches played out bet…
Socioeconomic inequalities in health-related fitness gradient shifts between 2001 and 2022 in young Polish adults
Background This study aimed to assess the importance of socioeconomic status (SES) on health-related fitness (H-RF) measurements in young adults and determine the impact of SES over 20 years of substantial social and economic changes in Poland. Material and methods The study compared H-RF differences between 2001 (P 1 ) and 2022 (P 2 ) in 252 volunteers aged 18 to 28 years who were grouped into quartiles based on SES and gender. The variables mea…
Level of oxytocin prior to rugby and handball matches
The aim of the present exploratory study was to assess the changes in urinary oxytocin (OT) concentration during the period between five days before, and on the day of match, among rugby and handball players. Nine male rugby players with a mean age of 27.62 years (SD = 4.21) and 18 male handball players with a mean age of 17.03 years (SD = 0.57) participated. Urinary oxytocin level was measured by ELISA immunoassay as a ratio to the concentration…
Changes in Anthropometric Measurements and Physical Fitness of Polish Students in 20-Year Period
Despite young adults claiming to have similar physical activity levels to those observed in the past, they demonstrate poorer physical performance and higher body fat levels. The observed changes can be considered negative
Sex Differences in Body Composition Changes after Preseason Training in Elite Handball Players
The purpose of this study was to evaluate changes in the estimated body composition of elite female and male Polish handball players during a five-week preseason training camp. Height and weight were measured, while body composition was estimated with bioelectrical impedance in 18 male and 17 female handball players before and after the five-week training protocol. Components of body composition included total body water (TBW), fat-free mass (FFM…
Sex differences in relationship between body composition and digit length ratio (2D
It is believed that the second to fourth finger length ratio is an indirect indicator of fetal testosterone levels. It is pointed out that there is a relationship between the 2nd to 4th finger length ratio and the body structure in women and men. Studies on the relationship between body composition and 2D:4D finger length among military students have not been carried out so far. The work aims to determine the dependence of body composition and th…
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Sex differences in relationship between body composition and digit length ratio (2D
It is believed that the second to fourth finger length ratio is an indirect indicator of fetal testosterone levels. It is pointed out that there is a relationship between the 2nd to 4th finger length ratio and the body structure in women and men. Studies on the relationship between body composition and 2D:4D finger length among military students have not been carried out so far. The work aims to determine the dependence of body composition and th…
Sex Differences in Body Composition Changes after Preseason Training in Elite Handball Players
The purpose of this study was to evaluate changes in the estimated body composition of elite female and male Polish handball players during a five-week preseason training camp. Height and weight were measured, while body composition was estimated with bioelectrical impedance in 18 male and 17 female handball players before and after the five-week training protocol. Components of body composition included total body water (TBW), fat-free mass (FFM…
Changes in Anthropometric Measurements and Physical Fitness of Polish Students in 20-Year Period
Despite young adults claiming to have similar physical activity levels to those observed in the past, they demonstrate poorer physical performance and higher body fat levels. The observed changes can be considered negative
Socioeconomic inequalities in health-related fitness gradient shifts between 2001 and 2022 in young Polish adults
Background This study aimed to assess the importance of socioeconomic status (SES) on health-related fitness (H-RF) measurements in young adults and determine the impact of SES over 20 years of substantial social and economic changes in Poland. Material and methods The study compared H-RF differences between 2001 (P 1 ) and 2022 (P 2 ) in 252 volunteers aged 18 to 28 years who were grouped into quartiles based on SES and gender. The variables mea…
Level of oxytocin prior to rugby and handball matches
The aim of the present exploratory study was to assess the changes in urinary oxytocin (OT) concentration during the period between five days before, and on the day of match, among rugby and handball players. Nine male rugby players with a mean age of 27.62 years (SD = 4.21) and 18 male handball players with a mean age of 17.03 years (SD = 0.57) participated. Urinary oxytocin level was measured by ELISA immunoassay as a ratio to the concentration…
Association between expression level of the miR-320, miR-182, miR-223 and miR-486 and body composition among young Polish female volleyball players
The expression of circulating microRNAs appears to be a promising indicator of physical strength. The objective of this study was to determine whether there is an association between the expression level of four selected microRNAs and body composition over time among young female volleyball players. Blood samples and body composition measurements were taken from 7 females who are Polish volleyball players before and after 5 matches played out bet…
Which Age Matters? Comparing Chronological and Biological Age in Adolescent Adaptation to School-Based Physical Activity Interventions (Wrocław Peer-Heart Study)
Background/Objectives: Relative age differences within the same school year may influence adolescents' physiological adaptations to physical activity programs. While biological maturity (maturity offset, MO) is often considered a more relevant indicator than chronological age (CA), empirical evidence from school-based interventions remains limited. This study aimed to compare the predictive value of CA and MO in explaining health-related adaptati…
Medicine (6 works) · Body mass index (5 works) · Internal Medicine (5 works) · Biology (4 works) · Anthropometry (3 works) · Body weight (3 works) · Demography (3 works) · Obesity, Physical Activity, Diet (3 works) · Physical therapy (3 works) · Psychology (3 works)