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Effect of self-modeling and self-controlled feedback on the performance of professional swimmers and waterpolo players

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Sports Medicine and Health Science 2024年第2期6卷 167-172页

作者： Masoud Mirmoezzi Mansour Sayyah Morteza taheri Khadijeh Irandoust Mandana Sangari Fatemeh Mirakhori Ali Seghatoleslami Lee Hill Katja Weiss beat knechtle Amine Ghram Faculty of Physical Education and Sport Science Islamic Azad UniversityTehranIran Kashan University of Medical Sciences KashanIran Department of Behavioral and Cognitive saciences in Sport University of TehranTehranIran Islamic Azad University Chalous BranchMazandaranIran University of Birjand BirjandIran Division of Gastroenterology&Nutrition Department of PediatricsMcMaster UniversityHamiltonCanada Medbase St.Gallen Am Vadianplatz St.GallenSwitzerland Institute of Primary Care University of ZurichZurichSwitzerland Cardiac Rehabilitation Department Heart HospitalHamad Medical CorporationDohaQatar Healthy Living for Pandemic Event Protection(HL-PIVOt)Network ChicagoIllUSA Department of Sport Sciences Imam Khomeini International UniversityQazvinIran

Self-modeling(SM)and self-control(SC)feedback can be presented as two solutions for learning ***,the aim of the present study was to investigate the effects of SM and SC feedback on 100-m freestyle performance of professional swimmers and waterpolo players.25 elite male swimmers and waterpolo players,were randomly assigned to four groups:swimmer group with SM,swimmer group with SM and SC feedback,waterpolo players group with SM,and waterpolo players group with SM and SC feedback.100-m freestyle times and performance were *** and SC feedback for the participants were utilized at the acquisition *** device used included a Lenovo B570 laptop and an Exilim ZR200 canon *** and SC feedback presented to the swimmers and waterpolo players led to improved speed and results,and the effect of presenting SM with SC feedback to swimmers had better *** conclusion,the present study indicates that SC modeling of watching video is a suitable method for professional *** polo trainers can also use SM and SC feedback to enhance their players'swimming technique.

关键词： Feedback Self-control Self-modeling Swimming Water polo

the effect of sex and performance level on pacing in cross-country skiers:Vasaloppet 2004-2017

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Journal of Sport and Health Science 2018年第4期7卷 453-458页

作者： pantelis theodoros nikolaidis Elias Villiger beat knechtle Exercise Physiology Laboratory Nikaia 18450 Greece Institute of Primary Care University of ZurichZurich 9000Switzerland Medbase St.Gallen Am Vadianplatz St.Gallen 9001Switzerland Corresponding author.E-mail address：beat.knechtle@hispeed.ch

Background： Pacing, defined as percentage changes of speed between successive splits, has been extensively studied in running and cycling endurance sports; however, less information about the trends in change of speed during cross-country （XC） ski racing is available. therefore, the aim of the present study was to examine the effect of performance （quartiles of race time （Q）, with Q1 the fastest and Q4 the slowest） level on pacing in the Vasaloppet ski race, the largest XC skiing race in the world. Methods： For this purpose, we analyzed female （n = 19,465） and male （n = 164,454） finishers in the Vasaloppet ski race from 2004 to 2017 using a one-way （2 sexes） analysis of variance with repeated measures to examine percentage changes of speed between 2 successive splits. Overall, the race consisted of 8 splits. Results： the race speeds of Q1, Q2, Q3, and Q4 were 13.6 ± 1.8, 10.6 ± 0.5, 9.2 ± 0.3, and 8.1 ±- 0.4 km/h, respectively, among females and 16.7 ± 1.7, 13.1 ± 0.7, 10.9 ± 0.6, and 8.9 ± 0.7 km/h, respectively, among males. the overall pacing strategy of finishers was variable. A small sex × split interaction on speed was observed （η^2= 0.016, p 〈 0.001）, with speed difference between sexes ranging from 14.9% （Split 7） to 27.0% （Split 1） and larger changes in speed between 2 successive splits being shown for females （p 〈 0.001, η^2=0.004）. A large performance × split interaction on speed, with Q1 presenting the smallest changes of speed between splits, was shown for females （η^2= 0.149, p 〈 0.001） and males （η^2 = 0.169,p 〈 0.001）. Conclusion： Male and fast XC skiers are more even pacers. Coaches and athletes should develop tailored sex- and performance-level pacing strategies; for instance, they should advise fast XC skiers to start fast and maintain their speed, rather than starting slowly and trying to make up time by going faster at times during the race.2018 Published by Elsevier B.V. on behalf of Shanghai University of Sport. this is an open access article

关键词： Endurance exercise Race speed Sex Sport performance Winter sport

Is there stability in the performance of elite half-marathoners?

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Sports Medicine and Health Science 2022年第2期4卷 101-104页

作者： Mabliny thuany beat knechtle pantelis theodoros nikolaidis thayse Natacha Gomes Faculty of Sports University of PortoPortoPortugal Institute of Primary Care University of ZurichZurichSwitzerland School of Health and Caring Sciences University of West AtticaAthensGreece Department of Physical Education Federal University of SergipeSao CristovaoBrazil

the purpose of this study was to investigate the performance stability of elite half-marathoners of both *** study was composed of 24 elite athletes(12 female and 12 male),ranked among the Senior World tOP20 halfmarathoners,who completed a half-marathon race for at least three consecutive *** was tested using autocorrelations and Kappa *** revealed a significant association,but a decrease in correlation among the years in both *** overall weighted kappa showed lower stability in performance for both sexes(K=0.191 and K=-0.245)than for *** findings suggest that both female and male elite halfmarathoners showed low stability in performance during three *** that,athletes with a better performance tended to present the highest performance *** is recommended that coaches track the developmental trajectories of the athletes to comprised the changes in performance across the years,as to provide environmental characteristics that can influence performance.

关键词： tracking Endurance Running Elite athletes

Does wet-cupping therapy improve repeated sprint ability,perceived wellness,and rating of perceived exertion in young active males?

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Sports Medicine and Health Science 2024年第4期6卷 378-384页

作者： Ismail Dergaa Amine Ghram Mohamed Romdhani Amine Souissi Achraf Ammar Ramadan Abdelmoez Farahat Mohamed Saifeddin Fessi Khadijeh Irandoust Morteza taheri tasnim Masmoudi Mohamed Amine Dergaa Nizar Souissi Omar Hammouda Katja Weiss Karim Chamari Helmi Ben Saad beat knechtle Primary Health Care Corporation(PHCC) DohaP.O.Box 26555Qatar Research Unit Physical Activity Sportand HealthUR18JS01National Observatory of SportTunis 1003Tunisia High Institute of Sport and Physical Education University of SfaxSfaxTunisia Department of Cardiac Rehabilitation Heart HospitalHamad Medical CorporationDohaQatar Universite de Sousse Faculte de Medecine de SousseHopital Farhat HACHEDLaboratoire de Recherche(Insuffisance CardiaqueLR12SP09)SousseTunisia Healthy Living for Pandemic Event Protection(HL-PIVOt)Network ChicagoILUSA Interdisciplinary Laboratory in Neurosciences Physiology and Psychology:Physical ActivityHealth and LearningUFR STAPSUPLParis Nanterre UniversityNanterreFrance Department of training and Movement Science Institute of Sport ScienceJohannes Gutenberg-University Mainz55128 MainzGermany Research Laboratory Molecular Bases of Human PathologyLR19ES13Faculty of Medicine of SfaxUniversity of SfaxSfax 3029Tunisia Faculty of Medicine Kafrelsheikh UniversityKafrelsheikh33511Egypt Department of Behavioral and Cognitive Sciences in Sport Faculty of Sport Sciences and HealthUniversity of TehranIran University of Sousse Farhat HACHED HospitalForensic ServiceSousseTunisia Medbase St.Gallen Am Vadianplatz St.GallenSwitzerland Aspetar Orthopaedic and Sports Medicine HospitalFIFA Medical Centre of ExcellenceDohaP.O.Box 29222Qatar Institute of Primary Care University of ZurichZurichSwitzerland

Wet-cupping therapy(WCt)is one of the oldest known medical techniques,used as a traditional and complementary therapy with a wide application all around the world for general *** on the effects of WCt on sports performance are sparse and ***,we aimed to explore the effects of WCt on repeated sprint ability,wellness,and exertion in young active ***-nine active adult males(age:[28±5]years;body height[177±8]cm;body mass:[79±7]kg;body mass index:[25.4±1.8]kg/m^(2))were selected for the *** participants performed a running-based sprint test on two separate occasions(Control and Post-WCt).WCt was performed 24 h before the testing *** completed the Hooper questionnaire to assess their well-being(i.e.,sleep,stress,fatigue,and soreness)before each *** rating of perceived exertion(RPE)was collected after each testing session.A higher maximum power(pt size[ES]=0.6),mean power(pt-WCt as compared to Control session along with a better perceived sleep(ptress(pthe post-WCt compared to the Control *** present findings demonstrated that WCt moderately enhanced repeated sprint ability and had positive effects on perceived sleep,stress,and *** may be an effective ergogenic aid to improve repeated sprint ability and general wellbeing in young adult *** large-scale multicentric clinical studies are paramount to confirm the results of our study.

关键词： Alternative medicine Complementary medicine Hijama Short-term maximal performance Sports medicine

An analysis of the Sao Silvestre race between 2007-2021:An increase in participation but a decrease in performance

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Sports Medicine and Health Science 2023年第4期5卷 277-282页

作者： Mabliny thuany Douglas Vieira Elias Villiger thayse Natacha Gomes Katja Weiss pantelis t.nikolaidis Caio Victor Sousa Volker Scheer beat knechtle CIFI2D Faculty of SportsUniversity of Porto4200-450PortoPortugal Post-Graduation Program of Physical Education Federal University of SergipeSao Cristovao-SEBrazil Institute of Primary Care University of Zurich8091ZurichSwitzerland Department of Physical Education and Sport Sciences University of LimerickLimerickIreland School of Health and Caring Sciences University of West AtticaAthens12243AthensGreece Bouve College of Health Sciences Northeastern UniversityBostonMA02115USA Ultra Sports Science Foundation 109 Boulevard de l'Europe69310Pierre-BeniteFrance Medbase St.Gallen Am Vadianplatz St.GallenSwitzerland

this study aimed to investigate the trends of finishers in the Sao Silvestre race in Brazil,taking into account sex,age,and performance levels.A total of 31775 runners(women,n=13847;men,n=17928),aged(45.2±16.8)years,finishers in the Sao Silvestre race between 2007 and 2021,were considered in the present ***(event year,date of birth,sex,and race times)were downloaded from the official race *** man-Whitney U test,Spearman correlation,and robust regression model were *** increased over time for both *** age groups,“31-40 years”(women)and“>60 years”(men)were those with the highest number of *** found a decrease in performance across the years(β=2.45;pt differences in race times for both sexes(U=42.844;pth men presenting better performances than *** time,it was observed an increase in the performance gap between the sexes,but in general,the performance decreased(β=1.76;ptakeholders should consider improving the strategies to improve women and young people's participation in running events.

关键词： Endurance Performance Sex differences

Alternative Method to Evaluate Performance Improvement Rate in Athletics Middle Distance Events

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Journal of Science in Sport and Exercise 2022年第2期4卷 128-134页

作者： Lucas Pinheiro Barbosa Patrick Aguiar Santos Samuel Silva Aguiar Herbert Gustavo Simões pantelis theodoros nikolaidis beat knechtle Caio Victor Sousa Graduate Program in Physical Education Catholic University of BrasíliaBrasíliaDFBrazil Exercise Physiology Laboratory NikaiaGreece School of Health and Care Sciences University of West AtticaAthensGreece Medbase St.Gallen Am Vadianplatz Vadianstrasse 269001 St.GallenSwitzerland Institute of Primary Care University of ZurichZurichSwitzerland Bouve College of Health Sciences Northeastern UniversityBostonMAUSA

Purpose the aims of this study were to propose an alternative method to assess an optimal performance improvement rate(PIR)that would be used as a tool for coaches and elite athletes willing to reach their personal best,mainly those seeking for national,continental or even world record(WR)in middle-distance *** further compared the improvement rate of women *** of the top-10 ranked athletes in the IAAF running these middle-distance events Method the top 10 athletes in the IAAF ranking of 800 m,1500 m,and 3000 m events for each sex were assessed for their history of race times before achieving their personal record(PR).the difference between PR(‘actual’season)and the best race time in the last season was defined as the 1st season improvement rate(1-SIR),whereas the average improvement rate in the last and preceding seasons was the multi-season improvement rate(M-SIR).1-SIR and M-SIR were calculated for each *** there were sex differences in the 1500 m with a large effect size(d=−0.746)in 1-SIR(P=0.001)and very large(d=−2.249)in M-SIR(P=0.001).Women improved more than men before the PR/WR achievements in the 800 m and 1500 m events(P=0.001)and had similar improvement rates before performing PR/WR in 3000 m events(P=0.533).Conclusion Women improve more before PR/WR achievement in 800 m and 1500 m ***,in the 3000 m men and women have similar improvement rates in previous seasons before the PR/WR achievement.

关键词： Performance Running track-and-field Middle-distance Athletics

Physical exercise and COVID-19 pandemic in PubMed:two months of dynamics and one year of original scientific production

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Sports Medicine and Health Science 2021年第2期3卷 80-92页

作者： Rodrigo L.Vancini Marília S.Andrade Ricardo B.Viana pantelis.t.nikolaidis.beat knechtle Cassia R.V.Campanharo Alexandre A.de Almeida Paulo Gentil Claudio A.B.de Lira Centro de Educaçao Física e Desportos(CEFD) Universidade Federal do Espírito Santo(UFES)Espírito Santo(ES)Brazil Departamento de Fisiologia Universidade Federal de Sao Paulo(UNIFESP)Sao Paulo(SP)Brazil Setor de Fisiologia Humana e do Exercício Faculdade de Educaçao Física e DançaUniversidade Federal de Goias(UFG)GoianiaGoias(GO)Brazil School of Health and Caring Sciences University of West AtticaGreece Medbase St.Gallen Am Vadianplatz St.Gallen and Institute of Primary CareUniversity of ZurichZurichSwitzerland Escola Paulista de Enfermagem(EPE) UNIFESPSao Paulo(SP)Brazil Instituto Federal de Educaçao Ciencia e Tecnologia do Tocantins(IFTO Araguatins)Campus Araguatins.Povoado Santa TerezaKm 05 S/N Zona RuralAraguatinsTocantins(TO)Brazil

Our aim was to conduct a narrative review about physical exercise and Corona Virus Disease 2019(COVID-19).A literature search was completed crossing the keywords“COVID-19”and“physical exercise”,for a narrative re-view,and physical activity(PA),physical exercise,physical training,sport,physical fitness,for a systematic re-view;search strategy(Randomized Controlled trial,in the last 1 year,English).the first search date was closed on 04/26/2020 and 06/26/*** strategy was chosen to assess the dynamics of scientific information production for the *** two months,an increase of 76%,from 12(19.4%)to 50(80.64%)COVID-19 articles(n=62,100%)was *** main types of articles published were editorial articles(16.13%,n=10 of 62 articles)and commentary(9.68%,n=6 of 62 articles).the most frequent country of origin of the scientific production was the United States(12.90%,n=8 of 62 articles),the United Kingdom(12.90%,n=8 of 62 arti-cles),and Brazil(11.29%,n=7 of 62 articles).However,in 2020,there were only 2 relevant randomized controlled trials on the COVID-19 topic in the context of physical *** information production shows the concern of the PA science community to bring a solution to the increase in physical inactivity generated by the COVID-19 *** findings show the dynamics of scientific production on the COVID-19,in a situation so unique such as a pandemic,denotes that the practice of PA is essential to improve and/or maintain physical and mental health.

关键词： Coronavirus Pandemic COVID-19 Social isolation Quarantine Physical exercise Physical activity Sport

the Matthew Effect in Running:An Analysis of Elite Endurance Athletes Over 23 Years

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Journal of Science in Sport and Exercise 2023年第3期5卷 236-243页

作者： Mabliny thuany beat knechtle Kevin Kipchumba Lee Hill thayse Natacha Gomes Centre of Research EducationInnovation and Intervention in Sport(CIFI2D)Faculty of SportUniversity of Porto4200-450 PortoPortugal Medbase Street Gallen Am Vadianplatz Vadianstrasse 269001 Street GallenGallenSwitzerland Kenyatta University NairobiKenya Division of Gastroenterology&Nutrition Department of PediatricsMcMaster UniversityHamiltonCanada Department of Physical Education Federal University of Sergipe(UFS)São CristóvãoSergipe 49100-000Brazil

Purpose the purpose of this study was to investigate the frequency of countries represented in the tOP20 long-distance elite runners ranking during 1997-2020,taking into account the countries’Human Development Index(HDI),and to verify if the Matthew effect can be observed regarding countries’representativeness in the raking alongside the *** the sample comprised 1852 professional runner athletes,ranked in the Senior World tOP20 half-marathon(403 female and 487 male)and marathon(480 female and 482 male)races,between the years *** about the countries’HDI was included,and categorized as“low HDI”,“medium HDI”,“high HDI”,and“very-high HDI”.Athletes were categorized according to their ranking positions(1st-3rd;4th-10th;>10th),and the number of athletes per country/year was summed and categorized as“total number of athletes 1997-2000”;“total number of athletes 2001-2010”;and“total number of athletes 2011-2020”.the Chi-square test and Spearman correlation were used to verify potential associations and relationships between *** Most of the athletes were from countries with medium HDI,followed by low HDI and very-high ***-square test results showed significant differences among females(χ^(2)=15.52;P=0.017)and males(χ^(2)=9.03;P=0.014),in half-marathon and marathon,*** significant association was verified between HDI and the total number of athletes,but the association was found for the number of athletes alongside the years(1997-2000 to 2001-2010:r=0.60;Pto-2011-2020:r=0.29;Pt of the athletes were from countries with medium HDI,followed by those with low HDI and very-high *** Matthew effect was observed,but a generalization of the results should not be done.

关键词： Endurance High-elite athletes Human development index

the Relationship Between training Volume and BMI in the Expression of Running Performance in Runners: A Mediation Model

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Journal of Science in Sport and Exercise 2023年第2期5卷 142-148页

作者： Mabliny thuany Lee Hill JoséRamón Alvero‑Cruz beat knechtle thayse Natacha Gomes CIFI²D Faculty of SportUniversity of PortoPortoPortugal Division of Gastroenterology and Nutrition Department of PediatricsMcMaster UniversityHamiltonON L8N 3Z5Canada Dpto de Fisiología Humana HistologíaAnatomia Patológica y Educación Física y DeportivaUniversidad de MálagaMálagaSpain Medbase St.Gallen Am Vadianplatz Vadianstrasse 269001 St.GallenSwitzerland Department of Physical Education Federal University of SergipeSão CristóvãoSEBrazil

Purpose the relationships between anthropometric and training variables with running performance were previously ***,it is possible that through the moderating role of anthropometric variables,the magnitude of the relationship between training and performance may be *** purpose of this study was to estimate the mediation role of body mass index(BMI)in the relationship between training volume and running performance among non-professional runners,taking into account sex and age *** the sample comprised 1151 non-professional road runners(61.8%male),aged 18–72 *** about sex,age,body mass(kg),body height(cm),running pace,motivation for running,training volume and frequency were obtained through an online *** into account athletes’age,they were split into two age categories:“until 34 years”(adult runners)and“≥35 years”(master athletes).A mediation analysis was computed in Macro Process(SPSS 26),considering sex and age *** was the mediating variable,while training volume/week was used as independ-ent variable,and running pace was considered as dependent *** For both sexes and age categories,a significant association between training volume on running pace was observed[male adult:β=-0.67;95%CI(-1.04 to-0.53);male master:β=-0.241;95%CI(-0.44 to-0.26);female adult:-0.83;95%CI(-1.25 to-0.41);female master:-0.76;95%CI(-1.09 to-0.44)],as well the association between training volume and BMI;and running BMI and running *** for female adult runners,a mediation effect of BMI was *** the present study showed that BMI mediated the association between training volume and running pace in non-professional runners of different sexes and age *** the other hand,a small influence of training volume on the expression of BMI was found.

关键词： Body mass index Running Mediation model