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EN
The problem of evaluating and defining physical endurance of athletes has been the subject of a great body of research and scientific discussion. In team sports, especially football, the energy protection of working muscles in players requires the use of almost all metabolic pathways: aerobic, anaerobic and aerobic-anaerobic. Because of the varying pace of action, the share of energy conversions in muscle cells changes rapidly during a match. Another concern voiced by scientists and football coaches is the question of whether fitness training should always be performed with football balls. The aim of this paper was to present the necessity of monitoring the development of aerobic fitness in football players, and also to answer the question of whether motoric training in football may be performed with balls.
Human Movement
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2013
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vol. 14
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issue 4
360-365
EN
Purpose. The aim of the study was to assess lactate and glucose concentrations as indicators of anaerobic capacity in a highlyranked female junior swimmer. Methods. Ten trials of a 5 × 200 m backstroke step test were performed between December 2008 and July 2011. Each trial was video-recorded and blood samples were drawn from the ear lobe 1 min after completion of each step to measure lactate and glucose concentrations. Results. During maximal effort, lactate concentrations of 5.1 to 13.1 mmol · l-1 were recorded, while glucose concentration varied from 6.6 to 8.1 mmol · l-1. Correlations between lactate and glucose concentrations were significant in most tests. The shape of lactate and glucose curves revealed an improvement in the swimmer’s endurance ability during subsequent tests. Conclusions. Analysis of fluctuations in lactate and glucose concentrations appears to be a relevant indicator of the anaerobic capacity of experienced swimmers.
EN
Purpose. The aim of the study is to characterize physical activity and physical inactivity of the inhabitants of the Liberec region in their common life. Basic procedures. The research sample consisted of 818 males and 831 females aged 15-69, which were either systematically or randomly drawn from throughout the region. Physical activity and its correlates were assessed using the IPAQ questionnaire. Main findings. According to self-reported data, 10% of the inhabitants are insufficiently physically active, 30% are sufficiently physically active, and 60% are highly physically active. The median of performed physical activity in the inhabitants in Liberec region expressed in MET · min-1 · week-1 was 3822 MET · min-1 · week-1 (IQR = 4371). On average, men spent sitting 393 min and women 415 min in total during a working day. Out of the total sample of respondents, 58% of the inhabitants in the Liberec region were of normal weight, 9% were underweight, 23% were overweight and 10% obese. Conclusions. These facts point to the necessity of increasing knowledge about the negative impacts of inactive behavior and emphasizing the advantages of performing regular physical activity along with the need to establish such conditions that would contribute to physical activity performance.
EN
A tennis player has a very limited time to hit an incoming ball; however, the ball delivery time is affected by playing on different surfaces. Consequently, the playing surface can affect also other match characteristics as players can reach more incoming balls or can move on the court with different intensity (cover more distance). Aim of Study: The aim is to analyze the rally pace characteristics and the frequency of rally shots in men's matches in the Australian Open, French Open and Wimbledon in 2017. Material and Methods: We analyzed 24 male matches in the Australian Open, French Open and Wimbledon in 2017. Analysis of variance including post-hoc tests and Cohen d were used to compare the point duration, number of rally shots, time between the points, rally pace and work to rest ratio among these tournaments. Results: The rally pace (mean ball flight time between the opponents) was the fastest in the Australian Open (1.22 s) and was significantly faster (p=0.003) compared to the French Open (1.35 s). The rally pace in the Wimbledon reached 1.27 s and Cohen d showed large effect between the rally pace in the Wimbledon and French Open or moderate effect between the Australian Open and Wimbledon. There were other differences among the tournaments, but the lowest number of rally shots (4.07), point duration (5.30 s) and time between points (18.82 s) was reached in the Wimbledon. More than 50 % of all points were finished within the first four shots (most in the Wimbledon - 66%). Conclusion: These findings show and endorse the impact of surface differences on the game performance in professional tennis and can be used to shape specific training sessions on different surfaces.
EN
Regular moderate-intensity exercise provides health benefits. The aim of this study was to examine whether the selected exercise intensity and physiological responses during exergaming in a single and multiplayer mode in the same physical space were game-dependent. Ten males (mean ±SD, age: 23 ±5 years, body mass: 84.2 ±15.6 kg, body height: 180 ±7 cm, body mass index: 26.0 ±4.0 kg·m−2) played the games Kinect football, boxing and track & field (3 × ~10 min, ~ 2 min rest periods) in similar time sequence in two sessions. Physiological responses were measured with the portable Cosmed K4b2 pulmonary gas exchange system. Single play demands were used to match with a competitive opponent in a multiplay mode. A within-subjects crossover design was used with one-way ANOVA and a post-hoc t-test for analysis (p<0.05). Minute ventilation, oxygen uptake and the heart rate were at least 18% higher during a multiplayer mode for Kinect football and boxing but not for track & field. Energy expenditure was 21% higher during multiplay football. Single play track & field had higher metabolic equivalent than single play football (5.7 ±1.6, range: 3.2-8.6 vs 4.1 ±1.0, range: 3.0-6.1, p<0.05). Exergaming in a multiplayer mode can provide higher physiological demands but the effects are game-dependent. It seems that exergaming with low intensity in a multiplayer mode may provide a greater physical challenge for participants than in a single play mode but may not consistently provide sufficient intensity to acquire health benefits when played regularly as part of a programme to promote and maintain health in young adults.
EN
On children, HIIT program is being used by coaches as a way of rapid improvement. The values of the intervals vary from the target of the period. The study’s purpose was to find out if HIIT in different interval protocols improves children’s swimming performance. In the study participated 18 rookie swimmers (9 boys and 9 girls), aged 11.6 ±1.5. The HIIT protocol in both groups included the set of 2 * 4 * 17.5 m (freestyle and freestyle kick, respectively). The first group (HIIT 1) had a 10 sec interval while the second (HIIT 2) - a 1 min between the HIIT reps. Swimmers performed in 35 m freestyle (35F) and 2 min free kick (2’ FK) trials at maximum effort. The performance (T), the number of strokes (SN) and the stroke length (SL) were measured at 35F, the covered distance at 2' FK and the heart rate (HR), the rated perception of exertion (RPE) at 35F and 2’ FK. Regarding the results, all parameters improved significantly (p = 0.01). The use of a 4-week swimming program with training 4 times per week, in which two were HIIT, improved children’s performance and efficiency in swimming. Intervals of 10 sec or 1 min did not alter the improvement.
EN
Feed greatly affects the growth and health of fish, however it also functions to increase the value of the color intensity when specific additional ingredients are added. One of the important ingredients, marigold-meal is one of the natural carotenoid sources. This research aims to determine the optimum concentration of marigold-meal in the artificial feed to increase the intensity color of koi fish, specifically the kohaku strain. The method used was an experimental Completely Randomized Design, consisting of five treatments and four replications. Parameters observed were color intensities analyzed using Kruskal-Wallis analysis, if there were significant differences, Z test would be performed. Research results were the color intensity enhancement of koi fish tails and head until the 40th day showed the highest value in the treatment concentration of 0.0% marigold-meal (positive control) with an average score of 8.00 and 10.00. This value was not different from the treatment concentration of 2.0% marigold-meal and concentration 1.5% marigold-meal. However, this value was not significantly different from concentration of 1.5% marigold-meal. The lowest average score on the tail and head was treatment concentration of 0.0% marigold-meal (negative control). The optimum concentration of the addition of marigold-meal resulting the best color intensity increase was in 1.5% concentration of marigold-meal with the color intensity value of 5.97 in the tail and 6.50 in the head of koi fish Kohaku strain.
EN
Introduction: Lateral epicondylitis, commonly referred to as tennis elbow, is one of the most common lesions of the arm. There are many treatment options available for tennis elbow; taping techniques and splints are commonly used. Purpose: The objective of this research is to compare the impact of the diamond taping technique and counterforce elbow bands on pain and handgrip strength in patients with lateral epicondylitis. Materials and methods: Forty male patients with lateral epicondylitis (tennis elbow), aged between 30 and 40 years, took part in this study. They were randomly assigned to one of two equivalent groups. Group A received the diamond taping intervention in addition to physical therapy, while group B was treated using an elbow band orthosis along with physical therapy. The JAMAR dynamometer and Visual Analog Scale (VAS) were used to assess handgrip strength and pain intensity respectively, before and following 4 weeks (12 sessions) of treatment. Results: Group A demonstrated significant improvement of both handgrip strength and pain intensity, while group B showed significant improvement of pain only. Conclusion: Diamond taping demonstrated a strong impact upon pain and handgrip strength in individuals with lateral epicondylitis. It is suggested that the diamond taping technique can be valuable in the treatment of lateral epicondylitis.
PL
Wprowadzenie: Zapalenie nadkłykcia bocznego, potocznie nazywane łokciem tenisisty, jest jedną z najczęstszych zmian chorobowych ramienia. Istnieje wiele opcji leczenia łokcia tenisisty; powszechnie stosowane są techniki tapingu i unieruchomienia stawu (przy pomocy ortez). Cel: Celem pracy jest porównanie wpływu techniki tapingu metodą McConnell w kształcie rombu i przeciwstawnych ortez łokcia na ból i siłę chwytu u pacjentów z zapaleniem nadkłykcia bocznego. Materiały i metody: W badaniu wzięło udział 40 mężczyzn w wieku od 30 do 40 lat z zapaleniem nadkłykcia bocznego (łokciem tenisisty). Zostali oni losowo przydzieleni do jednej z dwóch równoważnych grup. Grupa A oprócz fizjoterapii została poddana zabiegowi tapingu metodą McConnell w kształcie rombu, podczas gdy grupa B była leczona ortezą stawu łokciowego wraz z fizjoterapią. Do oceny siły chwytu i intensywności bólu przed i po 4 tygodniach leczenia (12 sesjach) zastosowano odpowiednio Dynamometr JAMAR i wizualną skalę analogową (VAS). Wyniki: Grupa A wykazała znaczną poprawę zarówno siły chwytu, jak i intensywności bólu, podczas gdy grupa B wykazała znaczną poprawę tylko w zakresie bólu. Wniosek: Wykazano wpływ tapingu metodą McConnell w kształcie rombu na ból i siłę chwytu u osób z zapaleniem nadkłykcia bocznego. Sugeruje się, że technika plastrowania metodą McConnell może być cenna w leczeniu zapalenia nadkłykcia bocznego.
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