Research quarterly for exercise and sport最新文献

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Impact of Complete Intermittent Blood Flow Restriction in Upper Limbs Strength and Neural Function. 完全间歇性血流限制对上肢力量和神经功能的影响
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-02-02 DOI: 10.1080/02701367.2023.2294092
Fábio Marzliak Pozzi de Castro, Lucas de Paula Oliveira, Rodrigo Aquino, Hugo Tourinho Filho, Enrico Fuini Puggina
{"title":"Impact of Complete Intermittent Blood Flow Restriction in Upper Limbs Strength and Neural Function.","authors":"Fábio Marzliak Pozzi de Castro, Lucas de Paula Oliveira, Rodrigo Aquino, Hugo Tourinho Filho, Enrico Fuini Puggina","doi":"10.1080/02701367.2023.2294092","DOIUrl":"10.1080/02701367.2023.2294092","url":null,"abstract":"<p><p><b>Purpose:</b> We aimed to investigate the chronic effects of low-load strength training (LT) with complete intermittent blood flow restriction (IBFR) on neural adaptations and strength in biceps brachii. <b>Methods:</b> Nineteen volunteers were randomly assigned into two different 9-week training protocols consisting of three assessment weeks and six training weeks: (a) LT with complete IBFR (LT-IBFR; n = 10) and (b) LT without complete IBFR (LT; n = 9). Strength was evaluated by predicted 1 repetition maximum (1RM) at weeks 1, 5, and 9 and neural function by root mean square (RMS) and median frequency (MDF) at sessions 1, 7, and 12 during the first three and last three repetitions. Both groups performed three sets of Scott curl with 20% of predicted 1RM interspersed with 90s rest twice a week. <b>Results:</b> No changes were found in predicted 1RM throughout the training protocols nor between groups. LT-IBFR group showed lower RMS in the first set than LT for the first three repetitions and higher RMS in all sets for the last three repetitions with decreases in this value across the sets with no longitudinal changes for both groups. MDF in the first three repetitions did not differentiate between groups, however, in the last three repetitions, MDF were lower for LTIBFR group in all sets and it increased across the sets for this condition with no chronical changes for both groups in both repetitions zones. These results suggest that LT-IBFR may be ineffective for increasing Q5 strength and it did not promote chronic neural adaptations.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"635-645"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139673963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reliability and Validity of Cycling Sprint Performance at Isolinear Mode Without Torque Factor: A Preliminary Study in Well-Trained Male Cyclists. 无扭矩因素的等速模式下自行车短跑成绩的可靠性和有效性:对训练有素的男性自行车运动员的初步研究。
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-02-06 DOI: 10.1080/02701367.2023.2298752
Eduardo Marcel Fernandes Nascimento, Fernando Klitzke Borszcz, Thiago Pereira Ventura, Fabrizio Caputo, Luiz Guilherme Antonacci Guglielmo, Ricardo Dantas de Lucas
{"title":"Reliability and Validity of Cycling Sprint Performance at Isolinear Mode Without Torque Factor: A Preliminary Study in Well-Trained Male Cyclists.","authors":"Eduardo Marcel Fernandes Nascimento, Fernando Klitzke Borszcz, Thiago Pereira Ventura, Fabrizio Caputo, Luiz Guilherme Antonacci Guglielmo, Ricardo Dantas de Lucas","doi":"10.1080/02701367.2023.2298752","DOIUrl":"10.1080/02701367.2023.2298752","url":null,"abstract":"<p><p><b>Purpose:</b> This study aimed to compare the performance-derived parameters utilizing isolinear (ISO<sub>LIN</sub>) and isovelocity (ISO<sub>VEL</sub>) sprint cycling modes. <b>Method:</b> For that, 20 male trained cyclists performed 2 sprints of 7 s on an electromagnetically braked cycle ergometer in ISO<sub>LIN</sub> and six sprints in ISO<sub>VEL</sub> mode with cadences between 90 and 180 rpm, each separated by 3-min. A linear function modeled the sprints within each mode to extrapolate maximal cadence (C<sub>MAX</sub>) and torque (T<sub>MAX</sub>), and a quadratic function was used to extrapolate the apex defined as optimal cadence power (OPT<sub>CAD</sub>) and peak power output (P<sub>MAX</sub>). Fifteen subjects performed another 4 sprints at ISO<sub>LIN</sub> mode on different days to verify the reliability. <b>Results:</b> The measures from the power-cadence relationship were not different between the ISO<sub>LIN</sub> and ISO<sub>VEL</sub> modes. Although significant differences were detected in the T-C relationship, T<sub>MAX</sub> was greater at ISO<sub>LIN</sub> than ISO<sub>VEL</sub> (<i>p</i> = .006). On the other hand, C<sub>MAX</sub> was higher at ISO<sub>VEL</sub> than ISO<sub>LIN</sub> (<i>p</i> < .001). The correlation between parameters was <i>large</i> to <i>very large</i> (<i>r</i> = 0.51 to 0.89). However, high limits of agreement were verified. The ISO<sub>LIN</sub> presented consistency during the trials, and the random errors were acceptable (CV = 5.3% to 11.5%). <b>Conclusion:</b> Using the power-cadence relationship, P<sub>MAX</sub> and OPT<sub>CAD</sub> could be detected similarly between the two sprint modes (ISO<sub>LIN</sub> and ISO<sub>VEL</sub>). Thus, the findings demonstrated that a single ISO<sub>LIN</sub> sprint test could be a suitable tool for quantifying the time course of muscle fatigue during and after cycling exercises in well-trained male cyclists.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"722-729"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139693772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Match-Play Running Performance in Professional Male Soccer Players: The Role of Anaerobic Speed Reserve. 职业男子足球运动员的比赛跑步表现:无氧速度储备的作用。
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-01-30 DOI: 10.1080/02701367.2023.2294102
Jaelson Gonçalves Ortiz, Ricardo Dantas De Lucas, Anderson Santiago Teixeira, Pedro Augusto Mohr, Luiz Guilherme Antonacci Guglielmo
{"title":"Match-Play Running Performance in Professional Male Soccer Players: The Role of Anaerobic Speed Reserve.","authors":"Jaelson Gonçalves Ortiz, Ricardo Dantas De Lucas, Anderson Santiago Teixeira, Pedro Augusto Mohr, Luiz Guilherme Antonacci Guglielmo","doi":"10.1080/02701367.2023.2294102","DOIUrl":"10.1080/02701367.2023.2294102","url":null,"abstract":"<p><p><b>Purpose:</b> This study aimed to compare match-play running performance between players with a high (H<sub>ASR</sub>) and low (L<sub>ASR</sub>) anaerobic speed reserve (ASR) profile in professional soccer players. <b>Method:</b> Thirty-six male players from the same club (age: 23.3 ± 5.4 years) took part in this study. Match data were collected from 43 home matches of the first and second division of the Brazilian National Championship over two consecutive seasons. Players had their maximal sprinting (MSS) and aerobic speeds (MAS) determined during field test-based assessments. ASR was defined as MSS minus MAS. Total distance (TD), sprinting distance, number of accelerations and decelerations, absolute peak (PMS<sub>(abs)</sub>) and mean match sprint speed (MMSS<sub>(abs)</sub>) and its relative values expressed as a percentage of MSS (PMS<sub>(rel)</sub> and MMSS<sub>(rel)</sub>), distance covered > 100% MAS<sub>(abs)</sub> and > 50% MSS<sub>(abs)</sub> were compared between the groups and halves. <b>Results:</b> H<sub>ASR</sub> presented greater sprint demand (<i>d</i> > 0.80), PMS<sub>(abs)</sub> (<i>d</i> = 1.57), and MMSS<sub>(abs)</sub> (<i>d</i> = 0.99) than the L<sub>ASR</sub> group. The opposite was observed for PMS<sub>(rel)</sub> and MMSS<sub>(rel)</sub>. The TD and amount of high-intensity accelerations and decelerations were moderately (0.77<<i>d</i> < 0.90) and largely (1.21<<i>d</i> < 1.63) reduced between halves for H<sub>ASR</sub> and L<sub>ASR</sub>, respectively. L<sub>ASR</sub> players also had their distance >MAS<sub>(abs)</sub> and > 50% MSS<sub>(abs)</sub> decreased between halves (<i>d</i> = 0.72 and 0.77), while the H<sub>ASR</sub> did not (<i>d</i> < 0.10). <b>Conclusion:</b> Our findings indicated that players with larger ASR had greater sprint demand, with a lower relative running intensity, and covered longer distances above MAS. The amplitude of ASR also affected the player's running ability between halves.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"680-687"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139643679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Menstrual Cycle and Situational Match Variables: Effects on Well-Being in Professional Female Soccer Players. 月经周期和比赛情境变量:月经周期和比赛情境变量:对职业女足运动员幸福感的影响》(Effects on Well-Being in Professional Female Soccer Players.
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-02-02 DOI: 10.1080/02701367.2023.2298443
Will Abbott, Zoe Exall, Lisa Walsh, Tom Clifford
{"title":"Menstrual Cycle and Situational Match Variables: Effects on Well-Being in Professional Female Soccer Players.","authors":"Will Abbott, Zoe Exall, Lisa Walsh, Tom Clifford","doi":"10.1080/02701367.2023.2298443","DOIUrl":"10.1080/02701367.2023.2298443","url":null,"abstract":"<p><p><b>Purpose:</b> We examined whether the situational match factors (location, result, and opposition quality), as well as playing position and menstrual cycle phase, influenced self-reported well-being in female soccer players. <b>Methods:</b> Twenty-two professional players (25 ± 5 years) from a squad in the Women's Super League in England self-reported their menstrual cycle phase via an online survey, and their soreness, sleep, stress, mood, and fatigue on a 1 (positive) to 5 (negative) scale on the morning of match day (MD) and for the next 3 days (referred to as MD + 1, MD + 2, MD + 3, respectively). Data was collected for 26 matches across the 2021-2022 season. Session rate of perceived exertion (sRPE) and total distance covered (measured with GPS) were measured on match and training days. <b>Results:</b> Menstrual cycle phase and the situational match factors had no influence on distance covered during matches and sRPE (<i>p</i> > .05). Sleep was worse on MD + 1 (<i>p</i> < .001; <i>g</i> = 1.59) and MD + 2 (<i>p</i> = .005; <i>g</i> = 0.98) after away matches. Stress and mood were > 28% worse after playing top vs. mid and bottom table opposition at MD + 1, and significantly worse when losing compared to winning and drawing (<i>p</i> > .05). Playing position and menstrual cycle phase has no influence on self-reported well-being (<i>p</i> > .05). <b>Conclusion:</b> Sleep quality was worse after away matches and losing matches negatively affects stress and mood for 2 days post-match, but menstrual cycle phase does not influence post-match well-being.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"688-696"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139673964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Meaning of Physical Education Practice in Students with Attention-Deficit Hyperactivity Disorder (ADHD). 注意力缺陷多动障碍 (ADHD) 学生体育锻炼的意义。
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-01-30 DOI: 10.1080/02701367.2023.2294097
Daniel Bores-García, Domingo Palacios-Ceña, Carmen Jiménez-Antona, Romain Marconnot
{"title":"The Meaning of Physical Education Practice in Students with Attention-Deficit Hyperactivity Disorder (ADHD).","authors":"Daniel Bores-García, Domingo Palacios-Ceña, Carmen Jiménez-Antona, Romain Marconnot","doi":"10.1080/02701367.2023.2294097","DOIUrl":"10.1080/02701367.2023.2294097","url":null,"abstract":"<p><p><b>Purpose</b>: This study seeks to describe the perspective of students with attention-deficit hyperactivity disorder (ADHD) and physical education (PE) teachers concerning physical activity practice in high school. <b>Methods</b>: A qualitative descriptive study based on an interpretative framework was conducted with secondary school students with ADHD, and their teachers of physical education. In-depth interviews and researchers' field notes were used to collect the data. Purposive sampling and inductive thematic analysis were applied. <b>Results</b>: Results show that ADHD is not experienced as limiting the practice of PA and PE by students, except in motor activities that require concentration such as tactical games. On the contrary, PA and PE helps them feel better. Teachers have not had to make extensive methodological modifications in their teaching styles with students with ADHD in relation to other situations or incidents. <b>Conclusions</b>: Students with ADHD do not seem to show significant difficulties in PE lessons or in the practice of extracurricular PA. PE teachers do not need to make significant adaptations with these students.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"656-663"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139643680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Combined Training Improves Gene Expression Related to Immunosenescence in Obese Type 2 Diabetic Individuals. 综合训练可改善肥胖的 2 型糖尿病患者与免疫衰老相关的基因表达。
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-02-06 DOI: 10.1080/02701367.2023.2299716
Diego T Brunelli, Ivan L P Bonfante, Vinicius O Boldrini, Pedro G Scolfaro, Renata G Duft, Keryma Mateus, Raphael F Fatori, Mara P T Chacon-Mikahil, Alessandro S Farias, Ana M Teixeira, Cláudia R Cavaglieri
{"title":"Combined Training Improves Gene Expression Related to Immunosenescence in Obese Type 2 Diabetic Individuals.","authors":"Diego T Brunelli, Ivan L P Bonfante, Vinicius O Boldrini, Pedro G Scolfaro, Renata G Duft, Keryma Mateus, Raphael F Fatori, Mara P T Chacon-Mikahil, Alessandro S Farias, Ana M Teixeira, Cláudia R Cavaglieri","doi":"10.1080/02701367.2023.2299716","DOIUrl":"10.1080/02701367.2023.2299716","url":null,"abstract":"<p><p><b>Purpose:</b> The aim of this study was to investigate the effects of moderate combined training (CT) on both the gene expression of pro- and anti-inflammatory markers and senescence in the immune system in peripheral blood mononuclear cells (PBMCs) and subcutaneous adipose tissue (SAT) of obese middle-aged individuals with type 2 diabetes (T2D). <b>Methods:</b> Thirty obese individuals (50.2 ± 9.4 years; body mass index: 31.8 ± 2.3 kg/m²) with T2D underwent 16 weeks of a CT group [CT; aerobic (50-60% of VO2<sub>max</sub>) plus resistance (50-75% of 1RM) training; 3 times/week, 70 min/session; <i>n</i> = 16)] or a control group (CG, <i>n</i> = 14). Nutritional patterns, muscle strength (1RM), cardiorespiratory fitness (VO2<sub>max</sub>), waist circumference (WC), body composition (Air Displacement Plethysmograph) and blood collections for biochemical (serum leptin, IL-2, IL-4, IL-6, IL-10, TNF-α and anti-CMV) and molecular (gene expression of leptin, IL-2, IL-4, IL-6, IL-10, TNF-α, PD-1, P16<sup>ink4a</sup>, CCR7, CD28 and CD27 in PBMCs and SAT) analyses were assessed before (Pre) and after (Post) the 16 weeks of the experimental period. <b>Results:</b> Significant decreases were observed in WC and IL4, TNF-α, PD-1 and CD27 expression in PBMCs for CT. Furthermore, significant increases were observed in 1RM and VO2max for CT after the experimental period. <b>Conclusion:</b> Moderate CT contributed to a reduction in the gene expression of markers associated to chronic inflammation and immunosenescence in PBMCs of obese middle-aged individuals with T2D.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"730-739"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139693771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Is Anticipation Skill Learning Bayesian? 预期技能学习是贝叶斯的吗?
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-02-07 DOI: 10.1080/02701367.2023.2294100
Nicholas J Smeeton, Johannes Meyer, Matyas Varga, Stefanie Klatt
{"title":"Is Anticipation Skill Learning Bayesian?","authors":"Nicholas J Smeeton, Johannes Meyer, Matyas Varga, Stefanie Klatt","doi":"10.1080/02701367.2023.2294100","DOIUrl":"10.1080/02701367.2023.2294100","url":null,"abstract":"<p><p><b>Purpose</b>: The aims of this study were to examine the learning of anticipation skill in the presence of kinematic and outcome probabilities information, and to see if this learning exhibited characteristics of Bayesian integration. <b>Method</b>: Participants with no competitive tennis playing experience watched tennis player stimuli playing forehand tennis shots and were tasked with predicted shot outcomes. Accuracy, response times and perceived task effort were recorded, pre, post and during four acquisition blocks where outcome feedback was provided. In both Experiment 1 and 2, kinematic information about shot direction was either present in the training group stimuli or absent. In Experiment 1, left/right shot probability information remained equi-probable for both groups. In Experiment 2, both groups also trained with a bias in the shot outcome probability toward one shot direction on 80% of the trials across acquisition blocks (and were not told about this manipulation). <b>Results</b>: Pre-to-post anticipation performance improved in the presence of kinematic (EXP 1) or both information sources (EXP 2). Pre-to-post improvements in the presence of shot outcome probability information were congruent with the bias in the shot direction trained (EXP 2). Superior anticipation performance was found when both information sources were present. The presence of kinematic information resulted in increased perceived effort during early training (EXP 1 & 2). Bayesian odds ratios indicated that shot direction probabilities and kinematic information were integrated during anticipation skill learning. <b>Conclusion</b>: Learning with shot direction probabilities and kinematic information shows characteristics of Bayesian integration.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"664-679"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139704313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Selection-Dependent Differences in Youth Elite Basketball Players' Relative Age, Maturation-Related Characteristics, and Motor Performance. 青少年精英篮球运动员的相对年龄、成熟度相关特征和运动表现的选拔差异。
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-02-13 DOI: 10.1080/02701367.2024.2311644
Daniel Leyhr, David Rösch, Sean P Cumming, Oliver Höner
{"title":"Selection-Dependent Differences in Youth Elite Basketball Players' Relative Age, Maturation-Related Characteristics, and Motor Performance.","authors":"Daniel Leyhr, David Rösch, Sean P Cumming, Oliver Höner","doi":"10.1080/02701367.2024.2311644","DOIUrl":"10.1080/02701367.2024.2311644","url":null,"abstract":"<p><p><b>Purpose</b>: The aim of the present study was to investigate the influence of players' relative age, maturation-related characteristics, and motor performance tests on two different stages of talent selection (regional and national level) in youth elite basketball. <b>Methods</b>: Relative age, maturation-related variables (height, weight, maturity offset, maturity timing) and motor performance (Countermovement jump, Standing long jump, Modified agility T-test, Linear sprint 20 m) of <i>N</i> = 68 male youth basketball players (<i>M</i><sub><i>age</i></sub> = 14.39 ± 0.28 years) were assessed during the initial selection tournament for the German U15 national team. Pre-selection biases regarding relative age and maturity timing on the regional level were investigated utilizing one-sample <i>t</i>-tests. Differences in relative age, maturation-related characteristics and motor performance between players selected (<i>n</i> = 27) and non-selected (<i>n</i> = 41) for the youth national team were examined via independent samples' <i>t</i>-tests and logistic regression analyses. <b>Results</b>: Strong pre-selection biases toward early-born and early-maturing players were confirmed on the regional level. Significant advantages in height and weight and higher values in maturity offset and maturity timing were found for selected players. Among the motor variables, only Countermovement jump performance was significantly better in selected players. When controlling for relative age and biological maturation regression models including motor performance variables did not significantly discriminate players' selection status. <b>Conclusion</b>: Coaches working in national, but also preceding selection stages (regional and club level) should raise their awareness to relative age and biological maturation when evaluating players' potential and current (motor) performance.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"775-788"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139731288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nocturnal Melatonin Ingestion Improves Soccer Players' Short-Term Maximal Performances on the Following Day. 夜间摄入褪黑素可提高足球运动员翌日的短期最大表现。
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-02-08 DOI: 10.1080/02701367.2024.2303457
Kais Ghattassi, Mohamed Amine Farjallah, Ahmed Graja, Mohamed Romdhani, Nahla Boudhina, Alexandre Guimard, Tarak Driss, Nizar Souissi, Hamdi Chtourou, Omar Hammouda
{"title":"Nocturnal Melatonin Ingestion Improves Soccer Players' Short-Term Maximal Performances on the Following Day.","authors":"Kais Ghattassi, Mohamed Amine Farjallah, Ahmed Graja, Mohamed Romdhani, Nahla Boudhina, Alexandre Guimard, Tarak Driss, Nizar Souissi, Hamdi Chtourou, Omar Hammouda","doi":"10.1080/02701367.2024.2303457","DOIUrl":"10.1080/02701367.2024.2303457","url":null,"abstract":"<p><p><b>Purpose:</b> Exogenous melatonin has been proven to have beneficial effects on sleep. A good sleep quality promotes recovery and improves physical performance. In this sense, the present study aimed to explore the potential effect of nocturnal melatonin ingestion on psycho-cognitive and short-term maximal performances, in the following morning. <b>Method:</b> Twelve professional soccer players (22.9 ± 1.3 years, 1.80 ± 0.05 m, and 72.0 ± 8.8 kg) volunteered to perform two separate testing sessions after either nocturnal melatonin or placebo ingestion. The next morning, participants performed the following psycho-cognitive and physical tests: Hooper's index, reaction time, vigilance, handgrip strength (HG), squat jump (SJ), modified agility T-test (MAT) and Wingate anaerobic test (WanT). Rating of perceived exertion (RPE) and blood lactate [La] were recorded, respectively, immediately and 3 min after the WanT. Blood glucose [GL] was measured before and 3 min after WanT. <b>Results:</b> Compared with placebo, melatonin improved subjective sleep quality, short-term maximal performances (HG and SJ), reaction-time, as well as peak and mean WanT powers and decreased fatigue index and RPE scores. However, [La] and [GL] were not affected by melatonin ingestion. <b>Conclusion:</b> Nocturnal melatonin intake before sleep has beneficial effects on cognitive and physical performances the following day.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"751-758"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139704358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Promoting Exploration During Learning: Effect of Imposed and Self-Controlled Practice Schedules on Learners' Behavioral Flexibility. 促进学习过程中的探索:强制和自我控制的练习计划对学习者行为灵活性的影响。
Research quarterly for exercise and sport Pub Date : 2024-09-01 Epub Date: 2024-02-07 DOI: 10.1080/02701367.2023.2300967
Guillaume Hacques, John Komar, Ludovic Seifert
{"title":"Promoting Exploration During Learning: Effect of Imposed and Self-Controlled Practice Schedules on Learners' Behavioral Flexibility.","authors":"Guillaume Hacques, John Komar, Ludovic Seifert","doi":"10.1080/02701367.2023.2300967","DOIUrl":"10.1080/02701367.2023.2300967","url":null,"abstract":"<p><p><b>Purpose:</b> Enriching learners' motor repertoires in a complex pluri-articular task, such as climbing, could help learners' adaptation to various sets of task constraints. Promoting exploration with variable practice conditions is one solution recurrently proposed. However, recent studies have shown that a too elevated exploration-exploitation ratio during practice could impair learning. A proposed solution is to give learners some control over their practice schedule, which appeared to better respect the individual learning dynamic in comparison to the usual experimenter-imposed practice schedule. Thus, the aim of this study is to investigate whether giving learners the possibility of controlling when to confront to new climbing routes would result in greater flexibility in their motor repertoire compared to giving them an imposed schedule of climbing routes or a constant practice condition. <b>Method:</b> Participants were assigned to either a constant practice group (CPG), an imposed-variability group (IVG) or a self-controlled variability group (SVG) to carry out a climbing task. To assess participants' behavioral flexibility, a scanning procedure was conceived by manipulating the route design and the instructions. <b>Results:</b> Participants showed an initial lack of flexibility as they strongly relied on a single coordination pattern. At posttest and retention, the three groups more frequently used a new hand coordination pattern and more often showed coordination patterns associated with high climbing fluency. Results suggest that the individualized rate of exploration in the self-controlled practice condition may have helped the learners improve their flexibility, whereas forcing exploration did not seem more beneficial than constant practice in this complex pluri-articular task.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"740-750"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139704359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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