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Tytuł:
Mothering, Running, and the Renegotiation of Running Identity
Autorzy:
Skinner, Samantha
Powiązania:
https://bibliotekanauki.pl/articles/2119720.pdf
Data publikacji:
2015-07-31
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Running
Mothering
Running Identity
Mothering Identity
Leisure
Identity
Opis:
Qualitative interviews with six female runners shed light on the gender gap in women’s participation in shorter versus longer road races. The interviews reveal that “mother guilt” and “time constraints” play a significant role in the development of a running identity among women. While the running community promotes a discourse centered around a “disembodied” runner — someone totally and unconstrainedly dedicated to running — the participants in this study experienced conflicts between their roles as mothers and their identity as runners. The conflicts led them to engage in challenging the dominant discourse by actively negotiating a mothering and running identity. The findings suggest that women are redefining the boundaries around running and subsequently — running subculture itself.
Źródło:
Qualitative Sociology Review; 2015, 11, 3; 18-39
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sex Differences In Shock Attenuation During Running
Autorzy:
Sinclair, Jonathan
Powiązania:
https://bibliotekanauki.pl/articles/1054784.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
gender
running
shock attenuation
Opis:
The current investigation was conducted to determine whether sex differences in skeletal accelerations and shock attenuation were evident during running. Twelve male and twelve female recreational runners ran at 4.0 m.s-1. Axial accelerations were measured at 1,000 Hz using accelerometers mounted at the tibia and sacrum. Peak tibial and sacrum axial accelerations were obtained and utilized to calculate the extent of shock attenuation. The results showed that peak sacrum accelerations were significantly larger in female runners (5.16 ±0.64 g) compared to males (4.37 ±0.75 g). It was also shown that shock attenuation (31.90 ±19.85%) was significantly lower in female runners in relation to males (47.89 ±11.46%). The findings from the current investigation indicate that female runners experience greater skeletal accelerations which may place greater stress on the musculoskeletal structures required attenuate transients forces which can be detrimental to passive tissues.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2016, 15, 3; 37-42
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relative Age Effect: A Systematic Discrimination against Biologically Younger Athletes
Autorzy:
Gioldasis, Aristotelis
Bekris, Evangelos
Smirniotou, Athanasia
Powiązania:
https://bibliotekanauki.pl/articles/1832358.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
RAE
talent
soccer
running
Opis:
Physical differences associated with birth-date among athletes of the same selection year have been described as the Relative Age Effect (RAE). The aim of this study was to examine whether RAE still exists in soccer and running sport disciplines as well as to evaluate its progress among different gender, age, and sport context and if it has an effect on performance. Using official archives of the international sports’ associations (World Athletics-UEFA), birthdates and performance were collected for 7226 athletes (4033 males; 3198 females) who participated in soccer and running events. A chi-square test was used to assess differences between observed and expected birth date distributions. The study showed an over-representation of athletes born in the first quarter of the selection year for both soccer and running events. RAE is more obvious in younger age groups and in sports that require higher explosive speed, strength, power and anaerobic capacity such as soccer and short distance sprints. It was also found that RAE is associated with performance. In conclusion, athletes of younger age groups with greater biological age have a physical advantage in explosive sports (i.e. soccer and short distance running) that probably does not predict their future development.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2021, 35, 3; 27-40
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of a Carbon Fiber Prosthetic Running Blade for Enhanced Reliability
Autorzy:
Siddiqui, Md Irfanul Haque
Alnaser, Ibrahim Abdullah
Alluhydan, Khalid
Powiązania:
https://bibliotekanauki.pl/articles/28328270.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
mechanical properties
durability
prosthetic design
running blade prosthesis
materials for running blade
reliable
Opis:
This study focuses on the development of a reliable prosthetic running blade primarily composed of carbon fiber. The reliable performance of novel prosthetic running blades has been evaluated by mechanical testing and finite element numerical modeling. Theexperimental analysis confirmed that these blades exhibit superior suitability for high-impact activities, demonstrating reliable load-bearing capacity and effective shock absorption properties. The tensile testing exhibited a linear elastic behavior of the composite material up to a strain of 0.075 mm/mm. Further, it was found that stress concentration areas and fracture points within the blade structure. Furthermore, numerical results revealed a maximum deflection of 29.60 mm that the blade can achieve. The kinetic energy loss during impact demonstrated an 8.5% decrease in blade kinetic energy, with the highest loss occurring at Vy = 30 m/s. Ultimately, this research aims to enhance the reliability, durability, and safety of prosthetic running blades, empowering athletes to reach new heights in sports.
Źródło:
Eksploatacja i Niezawodność; 2023, 25, 4; art. no. 172668
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of energy boost and springblade footwear on running economy and substrate oxidation
Autorzy:
Sinclair, Jonathan
Dillon, Stephanie
Powiązania:
https://bibliotekanauki.pl/articles/1055239.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
Running
VO2
economy
footwear
Opis:
The current study aimed to investigate the influence of energy boost, spring and conventional footwear on running economy and substrate usage. Ten male runners completed 5 min steady state runs in energy boost, spring and conventional footwear. Running economy and percent contribution of carbohydrate to total calorie expenditure were assessed. Participants also subjectively indicated which shoe condition they preferred for running. Differences between footwear were examined using repeated measures ANOVA. The results showed firstly that running economy was significantly improved in the energy return (33.36 ml.kg.min -1) compared to spring (34.83 ml.kg.min -1) and conventional footwear (34.65 ml.kg.min -1). In addition, percent carbohydrate was significantly lower in the energy return (74.51%) in comparison to the spring (78.56%) and conventional (78.52%) footwear. As running economy was improved and carbohydrate utilization reduced in the energy return footwear, this study indicates that they may be associated with improvements in running performance.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2016, 16, 4; 77-84
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expansion of didymosphenia geminata (Lyngbe) M. Schmidt (Bacillariophyceae) in running Waters in S-E Poland: new records in the Podkarpacie Region
Autorzy:
Noga, T
Stanek-Tarkowska, J.
Pajączek, A
Peszek, Ł.
Kochman, N
Powiązania:
https://bibliotekanauki.pl/articles/123394.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Didymosphenia geminata
running waters
ecology
Opis:
Nowadays Didymosphenia geminata is one of the most frequently studied diatoms in the world, due to its massive development in most continents. In Poland, up to the 1990’s only a small number of specimens were recorded, from streams in the Tatra Mountains and the Dunajec River. D. geminata was found in 2007–2008 in the middle and upper sections of the Wisłok River, while in 2009 and 2011 it was also found in the Wisłoka, Ropa, Bielcza and San. The cells belonged to one morphotype “geminata” and were characterized by high variability of size. It develops in mesotrophic, well-oxygenated, upper parts of flowing waters with rapid currents. It was most abundant below reservoirs on the San, Wisłok and Wisłoka.
Źródło:
Journal of Ecological Engineering; 2014, 15, 2; 31-39
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contemporary methods of designing rail vehicle running systems with the use of CAD and CAM solutions
Autorzy:
Antkowiak, Tomasz
Kruś, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/952285.pdf
Data publikacji:
2020
Wydawca:
Instytut Kolejnictwa
Tematy:
running system
design
CAD
CAM
Opis:
The article discusses the process of designing the running system of a rail vehicle using CAD and CAM tools as the solutions supporting the process. It describes the particular stages of design taking its final shape: from a preliminary design, through a detailed design, ending with the stage of production. Each stage includes a presentation of how CAD and CAM tools are used to support design engineers in their practice.
Źródło:
Problemy Kolejnictwa; 2020, 187; 75-80
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A modified independent component analysis-based fault detection method in plant-wide systems
Autorzy:
Teimoortashloo, M.
Sedigh, A. K.
Powiązania:
https://bibliotekanauki.pl/articles/205999.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
DICA
fault detection
running time
orthogonalization
Opis:
This paper presents a modified Independent Component Analysis (ICA)-based Fault Detection Method (FDM). The proposed FDM constructs a set of matrices, revealingthe trend of the variable samples and execute ICA algorithm for each set of matrices in contrast to the FDM based on dynamic ICA (DICA) which constructs the high dimensional augmented matrix. This paper shows that the proposed FDM decreases the matrix dimensions and as a result compensates for some disadvantages of using the high dimensional matrix discussed in previous articles. Furthermore, other advantages of the proposed FDM are the decreases in the running time, computational cost of the algorithm and the orthogonalization estimation errors. Moreover, the proposed method improves the detectability for a class of faults compared to DICA-based FDM. This class of fault occurs when two or more consecutive samples of fault source signal have opposite signs and cancel out each other. Simulation results are provided to show the effectiveness of the proposed methodology.
Źródło:
Control and Cybernetics; 2015, 44, 2; 287-310
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Women as leaders of organising running events teams
Autorzy:
Waśkowski, Zygmunt
Powiązania:
https://bibliotekanauki.pl/articles/11364540.pdf
Data publikacji:
2022-09-30
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
Leadership
sport events
running
woman leader
Opis:
Running is one of the most popular methods of spending time in active form in the world. The vast majority of managers who organise runs are former or actual runners. It is interesting to note that more men are leaders of teams which organise running events, while women as leaders are very rare. The main purpose of the research was to find the influence of sex of leader on the style of leadership, decision process and atmosphere in team. The author of this article conducted quality research using individual deep interview method. Data were collected from 23 individual deep interviews with managers of big running events organised in Poland, and 14 with the members of their teams. Currently, effective leaders should have competences different than what were prevalent 20–30 years ago. More important is, for example, emotional intelligence, empathy and interpersonal skills. Organisations operating in the amateur sport market have to build networking with many partners from the public and business sector, so leaders should concentrate on cooperating with stakeholders representing different expectations. Competences that women possess over men are required. Unlike other industries, in the running market there are very few women as leaders. Several reasons abound for this, some of which include economic and sociological grounds.
Źródło:
Marketing Instytucji Naukowych i Badawczych; 2022, 45, 3; 17-26
2353-8414
Pojawia się w:
Marketing Instytucji Naukowych i Badawczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical Description of Arrival Sequences in Amateur Long-Distance Races
Autorzy:
Białek, Beata
Powiązania:
https://bibliotekanauki.pl/articles/1031732.pdf
Data publikacji:
2017
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
amateur races
long-distance run
running
Opis:
In this paper, we analyze data sets, collected from the public web sites, containing the finishers arrival times in five different half marathons. We focus on finding patterns in the arrival times distributions as well as on studying the differences between the female and male runners’ arrival times distributions. The main statistical tools used are Analysis of Variance and Kolmogorov - Smirnov test for identifying underlying distributions and for comparing distributions of two samples. The obtained results indicate that the dynamics of groups of female runners is different than that of male runners. Also, a meaningful factor for the sha pe of the distribution is time limit set by the races organizers.
Źródło:
Physical Activity Review; 2017, 5; 44-53
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
What does post-exercise proteinuria tell us about kidneys?
Autorzy:
Wołyniec, Wojciech
Ratkowski, Wojciech
Zorena, Katarzyna
Januszczyk, Jacek
Kuźbicka, Karolina
Urbański, Robert
Tkachenko-Rita, Patrycja
Renke, Marcin
Rachoń, Dominik
Powiązania:
https://bibliotekanauki.pl/articles/1054979.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
albuminuria
chronic kidney disease
health
running
Opis:
Objectives. Post exercise proteinuria (PEP) is found in about 20–40% of sportsmen after intensive exercise. Urinary NGAL is a new marker of tubulointerstitial kidney damage. The relationship between PEP and uNGAL has not been defined yet. In presented study a resting uNGAL as a predictor of PEP was analyzed. The changes of albuminuria after exercise were monitored to estimate a frequency and range of PEP. Methods. 40 amateur healthy runners (mean age 36.65 ±10.61 years) participating in 10-km run took part in the study. Before and after the competition urine was collected. NGAL, albumin and creatinine were subsequently measured in urine. uNGAL to creatinine ratio (NCR) and albumin to creatinine ratio (ACR) were calculated. Results. 28 participants (mean age 37.9 ±11.46, 19 M, 9 F) with uNGAL below 15 ng/ml before competition were analyzed. The increase of ACR was observed in every case. Mean post-exercise ACR was 104.55 ±123.1 mg/g and was significantly higher than pre-exercise ACR 6.33 ±5.86 mg/g (p < 0.0005). The positive correlation was found between resting NCR and post-exercise ACR (r = 0.60, p < 0.05). Conclusions. Resting uNGAL positively correlated with PEP. The possible explanation of these findings is that persons with PEP had some early, occult tubulointersitial kidney damage. It is speculated that those runners have higher risk of chronic kidney disease.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2016, 14, 2; 93 - 100
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the ways to identify rail running surface defects by means of vibration signals
Autorzy:
Licow, Roksana
Tomaszewski, Franciszek
Powiązania:
https://bibliotekanauki.pl/articles/214971.pdf
Data publikacji:
2020
Wydawca:
Instytut Kolejnictwa
Tematy:
vibroacoustics
squat
spalling
running surface defect
Opis:
The article discusses a preliminary concept of a method enabling the identification of chosen rail running surface defects, such as squats, spalling, and running surface defects, by analysing the parameters of vibration signals. It features a description of the methodology of the conducted tests, the scope thereof, and the selection of the measurement points with specific defect types. The article covers selected results of vibration tests, the results of analyses of recorded signals for defective track sections and those for control track sections. The presented measurement results have been obtained for the technical–operating conditions occurring on railway line no. 213 Reda – Hel and line no. 131 Chorzów Batory – Tczew. The preliminary test results and conclusions included in the article show that it is reasonable to pursue further research into the phenomena involving the utilisation of vibroacoustics in rail performance diagnostics.
Źródło:
Problemy Kolejnictwa; 2020, 186; 119-124
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the running preparation on the aerobic and anaerobic threshold in a year ́s training cycle at the cross triathlet
Autorzy:
Lipárová, Svetlana
Broďáni, Jaroslav
Powiązania:
https://bibliotekanauki.pl/articles/1031944.pdf
Data publikacji:
2016
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
aerobic threshold
anaerobic threshold
running preparation
triathlon
Opis:
Triathlon is dev eloping very quickly nowadays. In our paper we are interested in cross triathlon. The road bike is replaced by the mtb mountain bike and the run is also done in the mountain. Triathlon is the endurance kind of sport where the AeT’s (aerobical threshold) a nd AnT’s (anaerobical threshold) level is the basic indicator of a sports performance. The curve of the both thresholds changes under the influence of a lot of factors during the year. We studied the influence of the running preparation on the aerobic and anaerobic threshold at the cross triathlon specialist during one year. We monitored the level, especially the changes in the sports performance during the ATC (annual training cycle). We valued the training proccess, the quantization of the training load and its influence on the triathlet’s performance with the intraindividual analysis.We gained the necessary data from the training diary and with help of the tests realized in the laboratory conditions .We detected the speed at the aerobic and anaerobic thr eshold by the running belt. Then we corelated them with the training parameters and we found out the addaction. We followed their actual influence on the performace and the influence of the training paramaters in the time intervals.
Źródło:
Physical Activity Review; 2016, 4; 139-146
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparison of two aerobic training methods (running vs rope jumping) on health-related physical fitness in 10 to 12 years old boys
Autorzy:
Arazi, Hamid
Jalali-Fard, Aliakbar
Abdinejad, Hamzeh
Powiązania:
https://bibliotekanauki.pl/articles/1031947.pdf
Data publikacji:
2016
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
aerobic power
physical fitness
rope-jump
running
Opis:
The purpose of this study was to compare of two aerobic training methods on health-related physical fitness in 10 to 12 years old boys. Thirty-three male students (age 11.27±0.64 year, weight 40.58±9.03 kg, height 151.45±6.34 cm) were recruited from preliminary school and randomly were assigned into rope-jump training (n=12), running training (n=11) and control (n=10) groups. Due to the grouping, each for 8 weeks did the rope jumping or running. Before and after the 8-week training period, factors of health-related fitness, including flexibility, muscular endurance, aerobic power and fat Percentage of the subjects were measured. The results indicated a significant positive effect of rope-jumping training on aerobic power, muscular endurance and body composition and meaningful improvement of aerobic power and body composition by running training (p≤0.05). Due to increasing urbanization and lack of space in homes and schools, rope-jump training can be a good alternative rather than running for physical fitness promotion.
Źródło:
Physical Activity Review; 2016, 4; 9-17
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes of Cardiac Biomarkers in Ultramarathon Runners
Autorzy:
Nosek, Martin
Balko, Stefan
Chytry, Vlastimil
Adamec, Jan
Partlova, Dagmar
Powiązania:
https://bibliotekanauki.pl/articles/1922058.pdf
Data publikacji:
2019-05-22
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
extreme terrain running
heart
physical load
troponin
Opis:
The aim of this study is to examine and evaluate the effects of long-term stress on muscle and heart biomarkers after completing a 100 km ultramarathon. Material and Methods: Venous blood samples of nine runners (average age 38.8±10.2 years), who successfully finished a 100 km ultramarathon at an elevation of 3130 m, were examined before the start, at the finish line immediately after the run, one day after the run and then after 5 and 10 days. Clinical, laboratory, and somatometric data were obtained from all measurements, and biomarkers: aspartate aminotransferase (AST), cortisol (COR), troponin T (cTnT), creatine kinase (CK) and C-reactive protein (CRP). Also, their training experience and ultramarathon experience was monitored. Discovered values were further analyzed with the use of t-test a ω2 (ω2≥0.1), and Spearman's rank correlation coefficient (r) at the significance level of p<0.05. Results: The average finish time of the runners was 13:55:40 (min: 12:12:35, max: 16:52:02). After finishing the ultramarathon, runners showed an average weight loss of 2.4 kg (p<0.05). The results show that hematological changes were caused by physiological stress and long-term physical load. The values of all monitored biomarkers showed a significant exceeding of the normal values immediately after the race in 8 competitors out of 9. The values of cTnT showed an increase of more than 50 % (pre -race: 8.2±2.3, post-race: 34.22±25.9 ng/l, max=98 ng/l). After 24 hours, however, this condition had returned to the normal values for all participants. The results show that the AST hepatic enzymes significantly correlated with the training experience (r=-0.41, p=0.043), the total number of kilometers run per year (r=-0.45, p=0.04) and the achieved finish time (r=0.67, p=0.001). At the same time, athletes who had the best finish time achieved lower CRP values (r=0.74, p=0.023) and cTnT values (r=0.49, p=0.040). The study found that the competitors who had the longest experience with ultramaraton had the lowest cTnT (r=0.44, p=0.050). Conclusion: Long-term physical stress is associated with metabolic and cardiovascular changes. Blood abnormalities found in our study suggest that due to long-lasting extreme stress, heart exhaustion may occur. However, these changes did not last long and after a few days they returned to the normal values for all runners.
Źródło:
Physical Activity Review; 2019, 7; 89-95
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 100

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