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Tytuł:
Wpływ witaminy D na stężenie testosteronu, kompozycję sylwetki i siłę mięśniową u sportowców – przegląd aktualnych doniesień
The effect of vitamin D on concentration of testosterone, body composition and muscular strength in athletes – overview
Autorzy:
Matras, Arkadiusz
Nowak, Maja
Parol, Damian
Śliż, Daniel
Powiązania:
https://bibliotekanauki.pl/articles/2129001.pdf
Data publikacji:
2018-03-26
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
witamina D
testosteron
kompozycja sylwetki
siła mięśniowa
vitamin D
testosterone
body composition
muscle strength
Opis:
Prawidłowe stężenie testosteronu, odpowiednia kompozycja składu ciała i siła mięśniowa w wielu dyscyplinach odgrywają znaczącą rolę w procesie optymalizacji formy sportowej. Osoby charakteryzujące się niedoborem witaminy D mają wyższe ryzyko występowania hipogonadyzmu. Suplementacja witaminy D przy niskich, wyjściowych stężeniach testosteronu może zwiększyć stężenie testosteronu u mężczyzn. Z uwagi na lipofilność witaminy D, nadmiernie rozwinięta tkanka tłuszczowa zwiększa ryzyko niedoborów witaminy D poprzez wiązanie jej w adipocytach. Sportowcy o wyższym wskaźniku BMI (ang. Body Mass Index – wskaźnik masy ciała), nawet mieszczącym się w granicach normy (18,5-24,9 kg/m2) mogą wymagać wyższych dawek suplementacyjnych witaminy D. Odkrycie VDR (ang. Vitamin D Receptor – receptor witaminy D) w obrębie tkanki mięśniowej dało podstawy by sądzić, że witamina D ma wpływ na siłę mięśniową. Stężenie 25 (OH) D jest dodatnio skorelowane z siłą mięśniową. Suplementacja witaminy D3 zwiększa siłę mięśniową od 1,37% do 18,75%. Suplementacja witaminy D2 nie zwiększa siły mięśniowej. Istnieje ograniczona liczba publikacji naukowych traktujących o wpływie witaminy D na stężenie testosteronu, kompozycji sylwetki i siłę mięśniową, jednak przeprowadzone badania jednoznacznie wskazują na korzyści wynikające z odpowiedniego odżywienia witaminą D. Optymalne stężenie w surowicy krwi 25 (OH) D wynosi 30-50 ng/ml. W okresie od września do kwietnia zalecana jest suplementacja dla ogółu społeczeństwa w dawce 800-2000 UI witaminy D3 dziennie.
The testosterone concentration, body composition and muscular strength in play a significant role in the process of optimizing the sports form. People with vitamin D deficiency have a higher risk of hypogonadism. Vitamin D supplementation at low initial testosterone levels can increase testosterone levels in men. Due to lipophilicity of vitamin D, excessively developed adipose tissue increases the risk of vitamin D deficiency by binding it in adipocytes. Athletes with a higher BMI (Body Mass Index), even within the normal range (18.5-24.9 kg / m2) may require higher doses of vitamin D supplementation. The discovery of VDR (Vitamin D The receptor – the vitamin D receptor) within the muscle tissue gave grounds to believe that vitamin D has an effect on muscle strength. Concentration 25 (OH) D is positively correlated with muscular strength. Vitamin D3 supplementation increases muscle strength from 1.37% to 18.75%. Vitamin D2 supplementation does not increase muscle strength. There are a limited number of scientific publications regarding the influence of vitamin D on testosterone concentration, silhouette composition and muscular strength, however, conducted research clearly indicate the benefits of adequate nutrition with vitamin D. Optimal blood serum concentration 25 (OH) D is 30-50 ng / ml. In the period from September to April, supplementation is recommended for the general public at a dose of 800-2000 UI of vitamin D3 per day.
Źródło:
Polish Journal of Sports Medicine; 2018, 34(1); 1-7
1232-406X
2084-431X
Pojawia się w:
Polish Journal of Sports Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Virtual-Based Aquatic Plyometric Training: How it Effects Lower Extremity Muscle Strength?
Autorzy:
Simanjuntak, Viktor
Setiawan, Edi
Yanti, Novi
Lalu Moh, Yudha Isnaini
Winarno, Mashuri Eko
Powiązania:
https://bibliotekanauki.pl/articles/28761971.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
virtual-based plyometric aquatic
lower extremity
muscle strength
mixed methods research
Opis:
The low achievement of long jump athletes and the limited virtual-based aquatic plyometric exercises to increase lower extremity muscle strength are the gaps in this study. This study aims to increase lower extremity muscle strength of long jump athletes through virtual-based plyometric aquatic training. This research adopted a mixed methods research. This study involved participants from long jump athletes at the University of Tanjung Pura in Indonesia (n = 20). Participants were divided into two groups, namely an experimental group (n = 10) and control group (n = 10). The quantitative instrument involved a leg dynamometer for measuring lower extremity muscle strength. While, the qualitative instrument used in-depth interview. Quantitative data analysis was carried out through IBM SPSS to calculate descriptive statistics and normality, while the paired sample t-test to test differences in lower extremity muscle strength values in the experimental and control groups. Qualitative analysis was carried out through recording, describing and coding stages, which categorized into three themes. Based on quantitative results, it showed that virtual-based plyometric aquatic training was proven significantly increase lower extremity muscle strength (ps0.05), but there was no significant effect in the control group (p & 0.05). Qualitative results found out that most of the participants gave a positive opinion regarding virtual-based plyometric aquatics. Thus, this study confirms that virtual-based plyometric aquatic training can be used to increase lower extremity muscle strength.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2023, 44; 95-105
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Age and Type of Force on Muscle Strength Capabilities in Women
Autorzy:
Tokarski, T.
Roman-Liu, D.
Kamińska, J.
Powiązania:
https://bibliotekanauki.pl/articles/90634.pdf
Data publikacji:
2012
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
muscle
strength
ageing
women
Opis:
The aim of this study was to assess handgrip and 5 other types of force in 52 women and to determine if handgrip force reflected general upper limb force capabilities correlated with age. The women were divided into subgroups according to age: 20–25, 45–50 and 55–65 years. Maximum forces of the right upper limb were measured in 6 types of force activities. In most tests the values of force showed statistically significant differences between the 20–25 group and the groups aged 45–50 and 55–64 years. The results did not show any differences related to age or to force activities that involved the small muscles of the forearms and hands. Thus handgrip force cannot always be considered an indicator of total force capabilities.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2012, 18, 1; 47-57
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effects of Pilates Exercises on Some Elements of Physical Fitness and Body Composition
Autorzy:
Lipko-Kowalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/1390690.pdf
Data publikacji:
2016
Wydawca:
Wyższa Szkoła Bankowa w Poznaniu
Tematy:
Pilates
physical activity
flexibility
trunk muscle strength
general balance
Opis:
The primary goal of this paper is to assess the effects of Pilates exercises on some elements of physical fitness, such as flexibility, trunk muscle strength, general balance, and body composition during a 6-month observation period. The experimental method was used in the study. The variables were verified using selected elements of an internationally used test called “Eurofit” for adults, namely, trunk muscle strength, flexibility, and general balance. The study was comprised of 17 women with an average age of 50.65±13.74, who met the inclusion criteria. Average study results show that class participants made the greatest progress with regard to flexibility and trunk muscle strength. The study results show that Pilates classes are an effective training method, especially as far as improving flexibility and trunk muscle strength is concerned.
Źródło:
Studia Periegetica; 2016, 16(2); 183-192
1897-9262
2658-1736
Pojawia się w:
Studia Periegetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effects of 6-month physical training conducted during hemodialysis in ESRD patients
Autorzy:
Chojak-Fijałka, Katarzyna
Smoleński, Olgierd
Miłkowski, Andrzej
Piotrowski, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/1935839.pdf
Data publikacji:
2006
Wydawca:
Akademia Wychowania Fizycznego im. Bronisława Czecha w Krakowie
Tematy:
haemodialysis
ESRD
muscle strength
Physical training
physical capacity
hemodializa
schyłkowa niewydolność nerek
siła mięśniowa
trening fizyczny
wydolność fizyczna
Opis:
Background: The aim of this study was to evaluate the effects of exercise training during hemodialysis treatment in patients with end-stage renal disease.Methods: Fourteen maintenance hemodialysis patients participated in a six-month program of exercise training. The exercise was performed during the hemodialysis treatment on a stationary bicycle three times per week. Compliance of exercise program was about 80% of the possible sessions. Sit-to-stand-to-sit test was used to evaluate legs muscle strength at baseline, after 3, and 6 months of exercise training. Exercise capacity was assessed on the treadmill test according to Bruce’s protocol at the beginning and at the end of the intervention.Results: After the six-months of exercise program, the patients showed: a significant increase in the number of repetitions performed in sit-to-stand-to-sit test after 3 months as compared to baseline (from 23,46 to 31,67) and an increase after 6 months of exercise program (from 23,46 to 36,50); a significant increase in treadmill test time (from 6,69 to 10,20 min); a significant increase in exercise capacity in treadmill test (from 4 to 6,21 METs).Conclusion: Exercise training during the hemodialysis treatment using stationary bicycle is technically feasible and safe for the screened patients and may increase exercise capacity and leg muscles strength. Physical exercise therapy should constitute an important part of treatment of patients undergoing haemodialysis.
Założenia i cele: Przebieg przewlekłej niewydolności nerek wiąże się ze stopniowym zmniejszaniem wydolności wysiłkowej chorych. Celem pracy było ocenienie skuteczności treningu wysiłkowego prowadzonego w czasie leczenia hemodializą u osób ze schyłkową niewydolnością nerek. Materiał i metoda: 14 przewlekle hemodializowanych pacjentów uczestniczyło w 6-miesięcznym programie aerobowego interwałowego treningu wytrzymałościowego. Ćwiczenia wykonywane były przy użyciu ergometru rowerowego trzy razy w tygodniu. Pacjenci uczestniczyli średnio w 80% zaplanowanych sesji treningowych. Siłę mięśni kończyn dolnych oceniano za pomocą testu „Wstań i siądź” trzykrotnie: na początku, po trzech miesiącach i na końcu programu. Tolerancja wysiłku oceniana była na początku i na końcu programu na podstawie wyników testu wysiłkowego wykonywanego na bieżni ruchomej zgodnie ze zmodyfikowanym protokołem Bruce’a. Wyniki: Po 6 miesiącach programu treningowego pacjenci wykazali: poprawę wyników testu „Wstań i siądź” (po trzech miesiącach średnio z 23,46 do 31,67 powtórzeń, a po sześciu miesiącach do 36,50 powtórzeń); poprawę tolerancji wysiłku, czego miarą było wydłużenie czasu trwania testu wysiłkowego (z 6,69 do 10,20 min.) oraz szacowanego pochłaniania tlenu w przeliczeniu na kg masy ciała (z 4 do 6,21 METs). Nie stwierdzono powikłań spowodowanych uczestniczeniem w treningu. Wnioski: Aerobowy interwałowy trening wytrzymałościowy w czasie hemodializy przy użyciu ergometru rowerowego jest technicznie możliwy i bezpieczny. 6-miesięczny trening fizyczny z zastosowaniem ergometru rowerowego poprawia siłę mięśni kończyn dolnych i ogólną tolerancję wysiłku. Terapia ruchowa powinna być ważną częścią leczenia osób przewlekle hemodializowanych.
Źródło:
Medical Rehabilitation; 2006, 10(2); 25-36
1427-9622
1896-3250
Pojawia się w:
Medical Rehabilitation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of prolonged hanging test to grip strength, changes in muscle mass and imunoekspresi IGF-1r in bicep muscle of mice (Swiss Webster)
Autorzy:
Fadhilah, Fitry
Hassan, Abdul Hadi
Herman, Herry
Lesmana, Ronny
Ihsan, Bagus Muhammd
Powiązania:
https://bibliotekanauki.pl/articles/1164127.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Grip strength
igf-1r
muscle mass
Opis:
Resistance training increases strength and stamina without enlarging muscle. Jaras ifg1 responsible for the proliferation and differentiation of muscle tissue in response to the exercise. Post-allocation of adaptation 36 research subjects were randomly allocated to the control group and the test. The purpose of this study to determine the effect of prolonged hanging test of grip strength, muscle mass changes and IGF-1r imunoekspresi the bicep muscles of mice. The uniqueness differences in physiological mechanisms increase the strength after resistance exercise through changes in the dynamics of unknown IGF1 receptors , so this time we did the study increased expression of IGF1 receptors (Igf1r) after resistance exercise, using new method is prolonged hanging test. Grip strength, muscle mass and score imunoekspresi igf1r in bicep muscles will be tested in the mice model (Swiss webster) using pre and posttest design. Examination of grip strength, muscle mass, muscle fiber cross-sectional diameter and imunoekspresi IGF-1r have done at day 28 in the Laboratory of Pathology in Dr. Hasan Sadikin Hospital, Bandung. Our results showed there were effect of prolonged hanging test to grip strength in the final test on mice and igf1r Imunoekspresi on mice. This research concluded that resistance exercise using hanging prolonged test increases grip strength and receptor expression igf1r without increasing muscle mass or muscle fiber cross-sectional diameter.
Źródło:
World Scientific News; 2018, 108; 215-223
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strength training in the treatment of degeneration of lumbar section of vertebral column
Autorzy:
Gasiorowski, A.
Zagorski, J.
Powiązania:
https://bibliotekanauki.pl/articles/50704.pdf
Data publikacji:
2013
Wydawca:
Instytut Medycyny Wsi
Tematy:
strength training
treatment
degeneration
lumbar section
vertebral column
life quality
absenteeism
intervertebral disc
spine muscle
human disease
Źródło:
Annals of Agricultural and Environmental Medicine; 2013, 20, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stabilometric indicators as an element of verifying rehabilitation of patients before and after reconstruction of anterior cruciate ligament
Autorzy:
Ogrodzka-Ciechanowicz, K.
Czechowska, D.
Chwała, W.
Ślusarski, J.
Gądek, A.
Powiązania:
https://bibliotekanauki.pl/articles/306953.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ACL
kontrola postawy ciała
siła mięśni
rehabilitacja
body posture control
stabilometric indicators
muscle strength
rehabilitation
Opis:
The aim of the study was to evaluate effectiveness of rehabilitation in patients before and after rACL, based on stabilographic indicators. Methods: The research group was comprised of 31 men aged 20–57 with anterior cruciate ligament injury, qualified for reconstruction surgery. A measurement of static stabilometric indicators and muscle strength was taken twice for each patient – before surgery and after 6 months. To assess stabilographic indicators the stabilographic platform was used and to asses muscle strength a dynamometer was used. In order to assess knee function the Lysholm scale and VAS scale were used. Results: The rehabilitation programme improved static stability of the knee in the frontal plane, which is manifested by a significant shortening of the SPML path length. Rehabilitation proceedings should focus on improving static stability of the knee joint in the sagittal plane, because the results obtained indicate only a slight shortening of the SPAP length. The results of the Lysholm and VAS scales point to a positive influence of the applied rehabilitation. Conclusion: Inclusion into rehabilitation diagnostic tools to assess stabilometric indicators enables for effective verification of rehabilitation proceedings focused on restoring body posture control before and after the rACL.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 1; 101-107
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Respiratory performance and occlusal strength of soccer players: an approach after training and detraining during the lockdown due to coronavirus disease 2019 (COVID-19)
Autorzy:
Prandi, Marcos Vinicios Ribeiro
Palinkas, Marcelo
Wanshi Arnoni, Veridiana
Gomes, Guilherme Gallo Costa
Silva, Adriana Wanshi
Fabrin, Saulo Cesar Vallin
Regalo, Isabela Hallak
Siéssere, Selma
Regalo, Simone Cecilio Hallak
Powiązania:
https://bibliotekanauki.pl/articles/2152255.pdf
Data publikacji:
2021-12-17
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
soccer
detraining
muscle strength
SARS-CoV-2
Opis:
Background. The aim of the study was evaluate the strength of the respiratory muscles, bite force, and occlusal force distribution of professional soccer players after training and detraining resulting from the lockdown that occurred during the coronavirus disease 2019 pandemic. Material and methods. Twelve male soccer players (age, 19-34 years) were subjected to respiratory muscle strength analysis by examining the maximal inspiratory and expiratory pressures, maximum molar bite force (right and left sides), and occlusal force distribution of the first permanent molars. Comparisons of variables after training and detraining were analyzed using the paired-sample t-test (p < 0.05), and the correlation between respiratory variables was measured using the Pearson test (p < 0.05). Results. There were no significant differences in the bite force and occlusal force distributions after training and detraining. The correlation results showed moderate positivity between the maximal inspiratory and expiratory pressures during the training period. Conclusions. The results suggest that when soccer players strengthen the inspiratory muscles, they also strengthen the expiratory muscles and that detraining does not impact the athlete's organic function, especially the respiratory muscle function and the forces of the occlusal contact of the first permanent molars.
Źródło:
Polish Journal of Sports Medicine; 2021, 37(4); 201-206
1232-406X
2084-431X
Pojawia się w:
Polish Journal of Sports Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protein intake among healthy adults undertaking regular muscle strength training
Autorzy:
Musiał, K.
Wiski, M.
Lipert, A.
Powiązania:
https://bibliotekanauki.pl/articles/2087946.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Opolski. Instytut Nauk o Zdrowiu
Tematy:
protein
nutrition
amateur athletes
muscle strength training
Opis:
Background: Protein is a basic macronutrient supplied to the body via food intake and one of the key dietary elements of physically-active populations. Aim of the study: The aim of the study was to analyze the protein intake of healthy adults undertaking regular muscle strength training. Material and methods: This study was conducted on 168 healthy adults: 84 women (25.9±6.1 years) and 84 men (25.5±5.4 years) performing strength training on a regular basis (~4 times a week). Protein intake was determined using a structured questionnaire to quantify the amount, source, and frequency of protein consumed. Results: The participants declared an average daily protein intake of 153.8±50.2 g, with women reporting lower intake (115.9±28.3 g) than men (184.8±42.2 g) (p<0.001). The main sources of protein were poultry meat, dairy products (e.g. milk, eggs), and protein supplements. 79% of participants declared using protein supplements, but no differences between women (79%) and men (80%) were found (p> 0.05). The amount of protein supplied by supplementation was, on average, 37.3±21.5 g with a lesser amount reported by women (28.6±13.2 g) than men (45.5±24.5 g) (p<0.001). 62.9% of participants consumed supplements in the form of whey protein concentrate and 42.6% took protein supplements immediately after training. Conclusions: The study participants consumed an excess amount of protein in comparison to the recommended daily intake. Protein supplementation accounted for a ¼ of daily protein intake, most often consumed immediately after training and generally in the form of whey protein concentrate. Nutritional education is necessary to align the eating habits and supplemental intake of physically active adults, relative to strength-training demands.
Źródło:
Medical Science Pulse; 2020, 14, 2; 23-29
2544-1558
2544-1620
Pojawia się w:
Medical Science Pulse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimizing the load for peak power and peak velocity development during resisted sprinting
Autorzy:
Matusiński, Aleksander
Gołaś, Artur
Zając, Adam
Nitychoruk, Magdalena
Maszczyk, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1933035.pdf
Data publikacji:
2021-06-30
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
developing strength
muscle power
sprint training
sprinting speed
Opis:
Introduction: Resistance towing is perhaps the most specific form of developing strength and power in muscles involved directly during the start, acceleration and at maximum speed. Resisted sprint training may involve towing a sled which provides an overload through the friction between the sled and ground surface or a modern advanced training device which uses drag technology to provide fully controlled resistance during the movement, such as the 1080 Sprint. The main objective of the study was to evaluate the optimal loading for the development of power in the engine assisted drag technology system SPRINT 1080. Material and methods: We evaluated the changes in running velocity and the generated force and power during resisted sprints over 30m with a load of 1, 3, 6, 9, 12 and 15 kg. Seven male sprinters with national and international experience participated in the study. Their average age, body mass and body height were 22.2 ± 2.4 years, 77.43 ± 4.63 kg, and 178.6 ± 3.2 cm, respectively. All athletes performed six 30 m sprints with 5 min rest intervals in between. The first sprint was performed without additional resistance, while the remaining 5 were performed in an random order with additional resistance of 3, 6, 9, 12 and 15 kg. After receiving a verbal signal, the participant started at will from a semi crouched position. During the resisted sprint trials, the time [s] and the following variables were recorded in peak values: power output [W], generated force [N], and sprinting velocity [m/s]. Results: Our results show that loading with 6 kg decreased sprinting velocity by 9.37% while the generated horizontal power increased by 31,32%. The 6 kg loading on the Sprint 1080device corresponded to 8% body mass, yet as mentioned before the baseline results were not fully free sprinting as the tested athletes reached velocities 0.5-0.6 m/s greater without the harness. Conclusion: Taking into account this fact, our results seem to confirm previous findings, that external loads between 8 and 13% may be optimal for improving power and sprinting speed at the same time.
Źródło:
Physical Activity Review; 2021, 1, 9; 128-134
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MUSCULAR ENDURANCE AND STRENGTH IN BOYS AGED FROM 11 TO 13 YEARS
Autorzy:
Wojciechowska–Maszkowska, Bożena
Wieloch, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/449214.pdf
Data publikacji:
2015
Wydawca:
Politechnika Opolska. Wydział Wychowania Fizycznego i Fizjoterapii
Tematy:
motor skills
strength skills
muscle endurance
puberty
Opis:
The psychophysical development of humans is genetically determined and influenced by a number of external factors. Nowadays, impacts on the physical development and physical ability of young men are caused by such phenomena as acceleration and civilizational or urban changes. Monitoring of changes in development and the influence of different factors seems to be justified as it is related to the understanding of processes and the introduction of preventive measures in the field of health and physical fitness for future generations. New concepts for testing human physical abilities seem to focus on utilitarian targets related to health needs and daily human activities. The study was performed on a group of 211 boys from an urban area, including 75 at the age of 11, 74 at the age of 12 and 62 at the age of 13. The study examined the strength of abdominal and trunk muscles (sits-up from a lying position), shoulder girdle and lower extremity muscles (overhang on a bar), and explosive strength of upper limbs (forward and backward medicine ball throw). Boys at the age of 11 years achieved the shortest distances, and boys at the age of 13 the longest distances in forward medicine ball throws. The results of the attained distances in backward medicine ball throws were also better in older boys compared to younger ones. The results of the muscle endurance tests were different. In both attempts, boys at the age of 12 attained better results than their younger and older colleagues. The development of strength abilities in boys between the age of 11 and 13 years has stable progress, while the observed differences in muscle endurance in boys at the age of 13 require further monitoring and further examination of their impact in terms of quality and quantity in boys of prepubertal age.
Źródło:
Journal of Physical Education & Health - Social Perspective; 2015, 4, 6; 23-30
2084-7971
Pojawia się w:
Journal of Physical Education & Health - Social Perspective
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Muscle torque of healthy individuals and individuals with spastic hemiparesis after passive static streching
Autorzy:
Freitas, S. T. T.
Abreu, E. M. C.
Reis, M. C.
Cunha, B. S.
Prianti, T. S. M.
Lima, F. P.
Lima, M. O.
Powiązania:
https://bibliotekanauki.pl/articles/306898.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mięśnie
siła mięśni
rozciąganie
muscle hypertonia
muscle strength
passive stretching
Opis:
Spasticity is one of the main causes of contracture, muscle weakness and subsequent functional incapacity. The passive static stretching can be included as having the purpose of increasing musculoskeletal flexibility, however, it also can influence the muscle torque. The objective is to verify the immediate effect of passive static stretching in the muscle strength of healthy and those who present spastic hemiparesis. There were assessed 20 subjects, 10 spastic hemiparetic (EG) and 10 healthy individuals (CG), including both sexes, aged between 22 and 78 years. The torque of extensor muscles of the knee was analyzed using isokinetic dynamometer. Results have shown that EG has less muscle torque compared to CG ( p < 0.01). In addition, EG presented a decrease in significance of muscle torque after stretching ( p < 0.05), however, it has not shown significant alteration in muscle torque of CG after performing the program that was prescribed. Immediately after the passive stretch, a significant torque decrease can be seen in hypertonic muscle; it is believed that this reduction may be associated with the physiological overlap between actin and myosin filaments and so preventing the muscle to develop a maximum contraction.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 1; 35-39
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lower extremity muscle strength, postural stability and functional movement screen in female basketball players after ACL reconstruction : Preliminary report
Autorzy:
Wrzesień, Zuzanna
Truszczynska-Baszak, Aleksandra
Rzepka, Remigiusz
Powiązania:
https://bibliotekanauki.pl/articles/307162.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
koszykówka
ACL
siła mięśni
basketball players
ACL reconstruction
functional stability
muscle strength
Opis:
The anterior cruciate ligament (ACL) tear is a common injury in basketball. Its consequence is a long absence from training, resulting from surgical treatment and long physiotherapy. The aim of the study was to assess muscle strength, postural stability and functional movements in female basketball players, who returned to professional sport careers after anterior cruciate ligament reconstruction. Methods: The study population consisted of 10 female basketball players after surgical reconstruction of anterior cruciate ligament. The control group consisted of 10 players without ACL injury. We used the Biodex System 4 Pro dynamometer to assess the muscle strength of the knee. We used it to conduct the test of flexors and extensors of the knee in isokinetic conditions. We also used Keiser Power Squat A300 in the single leg squat to measure power and the Biodex Balance SD dynamographic platform to assess balance in single leg stance. Results: We found deficits in both movement patterns and in muscle strength in the study population, compared to control group. Conclusions: The basketball players after ACL reconstruction had significant differences between the operated and non-operated limb. The differences may predispose them towards repeated ACL injuries.
Źródło:
Acta of Bioengineering and Biomechanics; 2019, 21, 2; 71-81
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Is there any relationship between decrease in bone mineral density in women, and deterioration in quality of life?
Czy istnieje związek pomiędzy zmniejszeniem gęstości masy kostnej u kobiet a pogorszeniem jakości życia?
Autorzy:
Mika, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1934241.pdf
Data publikacji:
2005
Wydawca:
Akademia Wychowania Fizycznego im. Bronisława Czecha w Krakowie
Tematy:
Osteoporosis
Physical activity
muscle strength
Spine
range of motion
osteoporoza
aktywność fizyczna
siła mięśni
kręgosłup
zakres ruchomości
Opis:
Background: Osteoporosis is a chronic metabolic bone disease leading to progressive destruction of bone microarchitecture and loss of function. Osteoporosis as a chronic disease can contribute to psychosocial disorders like changes in quality of life. The aim of our study was to assess if quality of life, especially such factors like pain, emotional status, physical fitness, are related to functional state of the spine of evaluated patients?Methods:189 female subjects aged 50 to 80 years were evaluated in this study. All were evaluated for: bone mineral density (BMD), the thoracic kyphosis, range of spinal thoracic motion in sagittal plane, strength of the back extensors and the physical activity level. Quality of life was assessed by SF–36 questionnaire.Results: Physically active subjects assessed their quality of life significantly better in all evaluated categories than sedentary subjects (p<0.01). When the cohort was divided according to their back extensor strength value there were significant differences in 5 from among 8 categories of quality of life (p<0.001), where stronger subjects assessed their quality of life better than sedentary. Subjects with a greater range of sagittal spinal motion assessed better their quality of life in 2 categories (p<0.001). There were no significant differences in quality of life both when the cohort were divided according to their BMD (p>0.05) and to thoracic kyphosis (p>0.05).Conclusion: The decrease in quality of life is influenced by pain, restriction in spinal range of motion, and decrease in back muscle strength. It was also observed that sedentary subjects assessed their quality of life worse in comparison to people who were physically active.
Cel: Osteoporoza jako uogólniona choroba szkieletu skutkuje wystąpieniem złamań, którym często towarzyszy ból i utrata sprawności. Efektem tych często przewlekłych dolegliwości są zaburzenia natury psycho-społecznej wpływające na jakość życia. Celem pracy jest stwierdzenie czy samoocena jakości życia, czyli czynniki takie jak ból, stan emocjonalny, sprawność fizyczna wykazują związek ze stwierdzonym u pacjentów stanem funkcjonalnym kręgosłupa oraz gęstością mineralną kości? Materiał i Metoda: Badaniami objęto 189 kobiet w wieku 50–80 lat. U każdego pacjenta wykonano następujące pomiary, na podstawie których podzielono badaną populację na podgrupy: pomiar gęstości tkanki kostnej (BMD), pomiar kąta kifozy piersiowej, pomiar zakresu ruchomości w płaszczyźnie strzałkowej odcinka piersiowego kręgosłupa, pomiar siły mięśni prostowników kręgosłupa oraz ocena poziomu aktywności fizycznej. Do oceny jakości życia pacjentów zastosowano kwestionariusz samooceny SF–36. Wyniki: Osoby aktywne fizycznie wykazywały statystycznie istotnie lepszą samoocenę jakości życia w zakresie wszystkich analizowanych kategorii w porównaniu z pacjentami prowadzącymi siedzący tryb życia (p<0,01). W przypadku, gdy siła mięśni stanowiła kryterium grupujące stwierdzono statystycznie istotne różnice w 5 z 8 analizowanych kategorii samooceny jakości życia (p<0,001) – osoby silniejsze oceniały jakość swojego życia lepiej niż słabsze. Osoby, u których zakres ruchomości kręgosłupa w płaszczyźnie strzałkowej był większy wykazywały lepszą samoocenę w 2 kategoriach (p<0,001). Nie stwierdzono statystycznie istotnych różnic zarówno, gdy analizowano zmienność w samoocenie jakości życia w zależności od stwierdzonej u pacjentów gęstości masy kostnej (p>0,05), jak i w zależności od wielkości kąta kifozy piersiowej (p>0,05). Wnioski: Na pogorszenie jakości życia wpływa ograniczenie ruchomości kręgosłupa i spadek siły mięśniowej. Zaobserwowano też gorszą samoocenę u osób prowadzących siedzący tryb życia w porównaniu z osobami aktywnymi fizycznie.
Źródło:
Medical Rehabilitation; 2005, 9(2); 15-19
1427-9622
1896-3250
Pojawia się w:
Medical Rehabilitation
Dostawca treści:
Biblioteka Nauki
Artykuł
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