Problem with the use of total distance travelled and average speed as measures of postural sway

1990 ◽  
Vol 28 (6) ◽  
pp. 601-602 ◽  
Author(s):  
M. H. Granat ◽  
C. A. Kirkwood ◽  
B. J. Andrews
Keyword(s):  
Postural Sway ◽  
Average Speed ◽  
Total Distance

scholarly journals The influence of athletic performance on the highest positions of the final ranking during 2017/2018 Serie A season

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Umile Giuseppe Longo ◽  
Francesco Sofi ◽  
Vincenzo Candela ◽  
Laura Risi Ambrogioni ◽  
Giuditta Pagliai ◽  
...  
Keyword(s):  
Athletic Performance ◽  
The Other ◽  
Lower Percentage ◽  
Average Speed ◽  
Total Distance ◽  
High Level

Abstract Background Our previous study on the 2016/2017 Serie A season showed that a greater likelihood of reaching the top positions in the Italian league “Serie A” seemed to be mainly related to sprint activity, goal attempts, total throws, target shots and assists. Therefore, we aim to evaluate the following season data in the same league to compare, confirm, and improve these results. Methods The data of all the matches played during the “Serie A” 2017–2018 season were obtained from the Italian soccer league. The teams’ analysis was performed in terms of total distance covered in km, jogging, running and sprint activities, average speed, and match statistics (total shots, shots on target, goal attempts, assists, turnovers, and steals). Results Teams that reached the first four positions revealed a lower percentage of running (65.98 ± 1.51 vs. 66.84 ± 2.18; p < 0.001), a higher percentage of jogging (25.61 ± 1.71 vs. 25.30 ± 1.97; p = 0.037) and sprint activities (8.41 ± 1.04 vs. 7.86 ± 0.82; p < 0.001). Match statistics seem to be statistically different between the first four teams the other teams. The total goals are strongly associated both with the total score at the end of the championship (R = 0.906; p < 0.001) and with the position in the final ranking (R = 0.850; p < 0.001). Conclusions Our results suggest that high-level teams have a lower running rate and a higher percentage of jogging and sprinting than other teams.

Intermittent exercise alters endurance in an eight-legged ectotherm

1992 ◽  
Vol 262 (5) ◽  
pp. R852-R859 ◽  
Author(s):  
R. B. Weinstein ◽  
R. J. Full
Keyword(s):  
Intermittent Exercise ◽  
Fold Increase ◽  
Muscle Lactate ◽  
Average Speed ◽  
Terrestrial Locomotion ◽  
Continuous Exercise ◽  
Total Distance ◽  
Exercise Period ◽  
Rate Of Oxygen Consumption ◽  
Continuous Running

Most animals move intermittently, yet many proposed performance limitations of terrestrial locomotion are based on steady-state measurements and assumptions. We examined the effect of work-rest transitions by exercising the ghost crab, Ocypode quadrata (28.1 +/- 8.1 g), intermittently on a treadmill at 0.30 m/s, a supramaximal speed [i.e., greater than the speed that elicits the maximal rate of oxygen consumption (VO2)]. Duration of the exercise and pause periods, ratio of exercise to pause, and speed during the exercise period were varied to determine the effect on performance. Crabs fatigued after 7.5 min of continuous running, a distance capacity (i.e., total distance traveled before fatigue) of 135 m. When the task was done intermittently with 2-min exercise and 2-min pause periods, the crabs fatigued after 87 min (a total distance of 787 m), representing an 5.8-fold increase in distance capacity compared with continuous exercise at the same absolute speed (0.30 m/s) and a 2.2-fold increase in distance capacity compared with continuous exercise at the same average speed (0.15 m/s). Pause periods less than 30 s did not result in greater distance capacity compared with continuous exercise at the same average speed. Longer (3-5 min) and shorter exercise periods (less than or equal to 30 s) decreased distance capacity. Leg muscle lactate increased 10-fold to 15 mumol/g leg during intermittent exercise. However, significant amounts of lactate were cleared from the leg during the brief pause periods.(ABSTRACT TRUNCATED AT 250 WORDS)

scholarly journals Will Next Match Location Influence External and Internal Training Load of a Top-Class Elite Professional European Soccer Team?

2021 ◽  
Vol 18 (10) ◽  
pp. 5229
Author(s):  
Rafael Oliveira ◽  
João Paulo Brito ◽  
Nuno Loureiro ◽  
Vítor Padinha ◽  
Hadi Nobari ◽  
...  
Keyword(s):  
High Speed ◽  
Muscle Soreness ◽  
Perceived Exertion ◽  
Training Load ◽  
Rating Of Perceived Exertion ◽  
Soccer Players ◽  
Average Speed ◽  
Total Distance ◽  
Soccer Team ◽  
Match Location

Background: The purpose of this study is to compare training load (TL) preceding a home versus away match in a top-class elite European team during the 2015–2016 season. Methods: Twenty elite outfield soccer players with a mean ± SD age, height and body mass of 25.9 ± 4.6 years, 183.1 ± 6.6 cm and 78.6 ± 6.6 kg, respectively, participated in this study. Total distance covered, high-speed running distance (HSRD), average speed (AvS), rating of perceived exertion (RPE) multiplied by training duration (s-RPE) and Hooper index (HI) were collected. Data from 24 weeks were analyzed through match-day minus/plus approach (MD-5, -4, -3, -2, -1, MD + 1). Results: All external TL variables indicated a decrease from MD-5 until MD-1 and then an increase to MD + 1 (p < 0.01). HI decreased from MD-5 to MD-1, but s-RPE increased until MD-3 and then decreased until MD + 1. When comparing TL data that preceded home matches versus away matches, for MD-5, HSRD and muscle soreness exhibited higher values when away match neared (p < 0.05). For MD-4 and MD-3, total distance, HSRD and AvS exhibited higher values closer to an away match than a home match (p < 0.05). For MD-1, total distances covered were higher closer to a home match than an away match (p < 0.01). For MD + 1, all HI items and AvS were higher when an away match was played (p < 0.05). Conclusions: This study confirms and provides evidence regarding the influence on internal and external TL data preceding home and away matches from a team that played in European competitions.

scholarly journals Participation to the first Cybathlon: an overview of the FREEWHEELS team FES-cycling solution

2017 ◽  
Vol 27 (4) ◽  
Author(s):  
Benoît Sijobert ◽  
Charles Fattal ◽  
Anne Daubigney ◽  
Christine Azevedo-Coste
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Lesion ◽  
Special Issue ◽  
Commercial Products ◽  
Average Speed ◽  
Total Distance ◽  
One Year ◽  
Cord Lesion

This article is a contribution to a special issue aiming at collecting data and documenting the different specificities of the teams which participated into Cybathlon 2016 FES-bike discipline. Our team prepared one paraplegic pilot over one year and developed a FES-cycling device based on existing commercial products. Our pilot (47 y.o, spinal cord lesion T3 AIS A since year 1995) was qualified for the final race and finished in 6th position over 12 participants in the discipline, covering a total distance of 750m at an average speed of 5.71km/h, propelled by his own quadriceps and hamstrings muscles.

scholarly journals Signals from predators, injured conspecifics, and pesticide modify the swimming behavior of the gregarious tadpole Rhinella dorbignyi (Anura: Bufonidae)

2021 ◽  
Author(s):  
Lucila Marilén Curi ◽  
Ana Paula Cuzziol Boccioni ◽  
Paola Mariela Peltzer ◽  
Andres Maximiliano Attademo ◽  
Agustin Bassó ◽  
...  
Keyword(s):  
Software Tool ◽  
Sublethal Concentration ◽  
Chemical Signals ◽  
Video Tracking ◽  
Swimming Behavior ◽  
Alarm Cues ◽  
Environmental Signals ◽  
Average Speed ◽  
Total Distance ◽  
Global Activity

Tadpoles detect chemical signals released from predators and conspecifics, and those present in the environment, and adjust their behavioral responses. This study evaluated the swimming activity of Rhinella dorbignyi (Duméril and Bibron, 1941) tadpoles exposed to chemical signals, including cues from a predator fish Synbranchus marmoratus Bloch, 1975 and an injured conspecific; sublethal concentration of insecticide cypermethrin; and their combination. Swimming behavior (total distance moved, average speed, global activity, number of contacts between tadpoles) was evaluated in an individual (1) and groups of different size (3, 5, 7 and 10 tadpoles) using a video-tracking software tool. Predator exposure modified behavioral parameters, reducing encounters with predators and, therefore, mortality. Total distance moved and average speed increased in trials involving 1 tadpole and 3 interacting tadpoles exposed to injured conspecifics, whereas global activity increased in all group sizes, showing that gregarious tadpoles may be affected by alarm cues and their behavior may be disrupted. The insecticide treatments (alone and combined) increased parameters in all group sizes, causing hyperactivity due to its neurotoxic effect. The different responses observed after exposure to alarm cues and environmental signals in the different group sizes modified the normal behavior and the ecological dynamics of gregarious tadpoles.

scholarly journals Comparison of Running Distance Variables and Body Load in Competitions Based on Their Results: A Full-Season Study of Professional Soccer Players

2021 ◽  
Vol 18 (4) ◽  
pp. 2077
Author(s):  
Hadi Nobari ◽  
Rafael Oliveira ◽  
João Paulo Brito ◽  
Jorge Pérez-Gómez ◽  
Filipe Manuel Clemente ◽  
...  
Keyword(s):  
Performance Measures ◽  
High Speed ◽  
Total Duration ◽  
Soccer Players ◽  
Average Speed ◽  
Total Distance ◽  
Professional Soccer ◽  
Premier League ◽  
Maximal Speed ◽  
Body Load

The aims of this study were to compare the external workload in win, draw and defeat matches and to compare first and second halves in the Iranian Premier League. Observations on individual match performance measures were undertaken on thirteen outfield players (age, 28.6 ± 2.7 years; height, 182.1 ± 8.6 cm; body mass, 75.3 ± 8.2 kg; BMI, 22.6 ± 0.7 kg/m2) competing in the Iranian Premier League. High-speed activities selected for analysis included total duration of matches, total distance, average speed, high-speed running distance, sprint distance, maximal speed and GPS-derived body load data. In general, there were higher workloads in win matches when compared with draw or defeat for all variables; higher workloads in the first halves of win and draw matches; higher total distance, high-speed running distance and body load in the second half in defeat matches. Specifically, lower average speed was found in matches with a win than with draw or defeat (p < 0.05). Sprint distance was higher in the first half of win than defeat matches and high-speed running distance was lower in draw than defeat matches (all, p < 0.05). In addition, first half presented higher values for all variables, regardless of the match result. Specifically, high-speed running distance was higher in the first half of matches with a win (p = 0.08) and total distance was higher in the first half of matches with a draw (p = 0.012). In conclusion, match result influences the external workload demands and must be considered in subsequent training sessions and matches.

Using Multiple Representations to Improve Conceptions of Average Speed

2002 ◽  
Vol 27 (1) ◽  
pp. 147-166 ◽  
Author(s):  
Stephen K. Reed ◽  
Linda Jazo
Keyword(s):  
Learning Environment ◽  
Visual Feedback ◽  
Multiple Representations ◽  
Weighted Average ◽  
Round Trip ◽  
Average Speed ◽  
Computer Based Learning ◽  
Total Distance ◽  
Computer Based ◽  
Conceptual Explanation

We evaluated a computer-based learning environment that uses multiple representations to improve students' conception of the average speed of a round trip. The instruction explained that average speed is a weighted average of the component speeds in which the weights reflect the amount of time spent traveling at each speed. Students then improved their estimates of average speed by using visual feedback provided by a simulation. Correct answers and estimates were plotted on a graph to encourage students to discover the principle that average speed cannot be greater than twice the slower speed. A conceptual explanation (average speed as the ratio of total distance to total time) and an algebraic explanation (the limit of a function) helped integrate the multiple representations of the concept. Students' responses during the instruction and to a questionnaire provided useful information for improving the program, which was then reevaluated in a second study. The concluding discussion summarizes how the multiple representations were used in the instruction and examines the different functions of the representations based on Ainsworth's (1999) taxonomy.

scholarly journals Performance Activities and Match Outcomes of Professional Soccer Teams during the 2016/2017 Serie A Season

Medicina ◽  
2019 ◽  
Vol 55 (8) ◽  
pp. 469
Author(s):  
Umile Giuseppe Longo ◽  
Francesco Sofi ◽  
Vincenzo Candela ◽  
Monica Dinu ◽  
Matteo Cimmino ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Logistic Regression Analysis ◽  
Athletic Performance ◽  
Average Speed ◽  
Total Distance ◽  
Professional Soccer ◽  
Significant Difference ◽  
The World ◽  
Soccer Teams

Background and Objectives: Soccer is the most popular sport in the world. To describe athletic performance, match statistics, and their relationships with the probability of achieving the first positions of the final ranking in the Italian football league “Serie A”, season 2016/2017. Materials and Methods: Analyses comprised all the matches played by the 20 teams of the “Serie A” championship during the season 2016–2017. Indicators of athletic performance (total distance covered in km, jogging, running and sprint activities, and average speed) and match statistics (total shots, shots on target, goal attempts, assists, turnovers, and steals) were obtained from the Italian football league. Results: Analyses of performance activities according to the final ranking showed no significant differences for the total distance covered and speed, while a statistically significant difference (p < 0.05) among teams was observed for jogging, running and sprint activities. In regard to match statistics, all the parameters investigated were significantly different among the teams. By grouping teams into four subgroups (those who qualified for the Champions League, those who qualified for the Europe League, those who ranked intermediate positions and those who relegated from the “Serie A” league), the percentage of jogging, running and sprint activities, as well as match statistics were significantly different among groups, with a downward trend for total shots, shots on target, goal attempts, assists, and turnovers. The logistic regression analysis revealed that sprint activities as well as total shots, shots on target, goal attempts, and assists higher than the 3rd tertile of their distribution were associated with a higher probability of reaching the first three positions of the final ranking. Conclusions: An increased probability to achieve the first positions of the final ranking in the Italian football league “Serie A” seemed to be mainly related to sprint activity, goal attempts, total shots, shots on target and assists.

scholarly journals Evaluation of the Super League Team’s Competition Analysis before and after the COVID-19 Outbreak Is Given

2021 ◽  
Vol 7 (1) ◽  
pp. 45
Author(s):  
M. Onur Sever ◽  
Ömer Zambak
Keyword(s):  
High Intensity ◽  
High Speed ◽  
Football Players ◽  
Competition Analysis ◽  
Average Speed ◽  
Total Distance ◽  
Significant Difference ◽  
Before And After ◽  
Paired T Test ◽  
Super League

The paper is aimed to determine whether there is a loss of performance by comparing the competition values of the Super League team before and after the COVID-19 epidemic. In order to reduce the performance losses of the athletes due to lack of training, 60-75 minutes of self-weight training was applied during the quarantine period. Paired t test was used for statistical analysis. A statistically significant difference was found in the Total Distance, High Intensity Distance, Sprint Distance, High Speed Distance, Number of High Intensity Runs, Number of Sprints, Number of High Speed Runs, Average Speed, Total Distance in Possession, Total Distance Out of Possession, Total Distance Ball Out of Play, High Intensity Distance in Possession, High Intensity Distance Out of Possession, High Intensity Distance Ball Out of Play, Sprint in Possession, Sprint Out of Possession, Sprint Ball Out of Play, High Speed Distance in Possession, High Speed Distance Out of Possession, High Speed Distance Ball Out of Play values of the athletes compared to p < 0.05. As a result, it has been observed that the training of super league football players with their own body weight during the quarantine period positively affects their performance during the season.

scholarly journals Effect of specific endurance on the physical responses of young athletes during soccer small-sided games

Kinesiology ◽  
2020 ◽  
Vol 52 (2) ◽  
pp. 258-264
Author(s):  
Júlio César Lemes ◽  
Renato Carvalho Guerreiro ◽  
Victor Alberice de Oliveira Rodrigues ◽  
Sarah da Glória Teles Bredt ◽  
Laura Beatriz Faleiro Diniz ◽  
...  
Keyword(s):  
Effect Size ◽  
Large Effect Size ◽  
Average Speed ◽  
Total Distance ◽  
Moderate Effect Size ◽  
Adequate Stimulus ◽  
Group 2 ◽  
Gps Devices ◽  
Physical Responses ◽  
Test Level

This study aimed to compare the physical responses of soccer players with different levels of specific endurance during SSG performed by teams balanced according to athletes’ specific endurance. Eighteen U-17 athletes from a team that participated in national competitions took part in this study. The Yo-Yo Intermittent Recovery Test Level 2 (YIRT2) was used to measure the athletes’ specific endurance. Then, athletes were allocated to two groups balanced according to their positional status and YIRT2 scores: in Group1 players with the highest results in the YIRT2 and in Group 2 with the lower YIRT2 scores. Athletes played two four-minute bouts of 3vs.3 small-sided games with goalkeepers with four minutes of passive rest. Total distance covered, average speed, and accelerations were obtained by GPS devices carried by each player. Group 1 presented higher total distance covered (large effect size), higher average speed (large effect size), and higher total distance covered in accelerations above 1 m·s-2 (moderate effect size), compared to Group 2. We concluded that specific endurance can partially influence physical responses of young soccer athletes during small-sided games. This information is important to appropriately prescribe small-sided games during the training process, possibly by grouping together athletes with similar specific endurance and, therefore, promoting an adequate stimulus to better-conditioned athletes.

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