Health and Physical Education Commons^™

Core Stability Training And Sports Performance: A Bibliometric Mapping (2000–2025), Mimi Guo, Muhamad Hafiz Bin Ismail, Diyana Z. Abdul Ghani, Qi Liang, Yifei Gao

Baltic Journal of Health and Physical Activity

Background: Core stability training has become an important topic in sports science because of its proposed role in athletic performance enhancement, injury prevention, and neuromuscular control. This study aimed to map the knowledge structure, research trends, and collaboration patterns in this field. Materials and Methods: A bibliometric analysis was conducted using the Web of Science Core Collection. Articles and reviews published between 2000 and 2025 were screened according to predefined eligibility criteria. A total of 559 publications were included and analyzed using Bibliometrix and Biblioshiny. Results: Scientific output increased markedly over time, particularly after 2020. The USA and China were …

Effects Of Eight-Week High Interval Training On The Distance Covered During Small-Sided Games Versus League Match In Youth Soccer Players, Dorota Lewandowska, Zbigniew Jastrzebski

Baltic Journal of Health and Physical Activity

Background: The aim of the study was to demonstrate the effectiveness of an 8-week high-intensity interval training (HIIT) program on the distance covered by young soccer players during small-sided games (SSG) and a league match. Materials and Methods: The study involved 39 players aged 17–18 years old, divided into two groups, each performing SSG on a pitch with a surface of 90 m² per player (G-90, n = 19) and 180 m² per player (G-180, n = 20). Players (5 × 5) in both groups completed four games, once a week on Tuesdays. Each game lasted 5 minutes with a …

Collective High-Intensity Physical Load And Team Performance In The Fifa U-20 World Cup Chile: Match-By-Match Analysis Of Finalists, Khalid El Mouahid, Salim Khairi, Paweł Chmura, Amine Arfaoui

Baltic Journal of Health and Physical Activity

Background: This study aimed to compare the physical and technical-tactical performance profiles of the two finalist teams (Argentina and Morocco) at the FIFA U-20 World Cup 2025 and to examine the relationships between individual physical loads and collective match performance. Materials and Methods: An observational comparative design was applied using official FIFA match reports. Seven matches per team were analyzed. Physical variables included total distance, distances covered in speed zones (Z3–Z5), high-speed running, sprint distance, and maximal speed, while technical-tactical variables described offensive, defensive, and collective behaviors. Between-team comparisons and correlation analyses were conducted using appropriate parametric and non-parametric procedures. …

Benign Jaw Bone Lesions In Athletes Exposed To Craniofacial Trauma: Surgical Treatment And Bone Regeneration Using Biphasic Calcium Sulfate, Damian M. Dudek, Agata Chwarścianek, Izabela Pabin, Łukasz Jaworski, Oliwia Warmusz, Grzegorz Wyrobiec, Ewa Kłodzińska

Baltic Journal of Health and Physical Activity

Benign cystic and tumor lesions of the jaw bones represent relatively frequent pathological conditions encountered in oral and maxillofacial surgery. Although these lesions are often asymptomatic and slow-growing, they may lead to progressive weakening of bone structure. In individuals exposed to repetitive mechanical forces, such as athletes participating in contact sports, the presence of such lesions may significantly increase the risk of pathological fractures of the facial skeleton. The aim of the present study was to present a clinical case series of a benign jaw bone lesion treated surgically using a biphasic calcium sulfate biomaterial and to discuss the potential …

Selected Determinants Of The Health Quality Of The Diet Of Women Practicing Aerobic Sports, Maria Gacek, Paulina Mazur-Kurach

Baltic Journal of Health and Physical Activity

Background: In the context of the importance of nutrition for health and exercise capacity, this study was conducted to assess selected determinants of the health quality of the diet of female athletes training in one of the gymnastics disciplines—aerobic gymnastics. Materials and methods: The study was conducted among 112 women aged 19 to 30 using several research tools, including the Beliefs and Eating Habits Questionnaire KomPAN, the Generalised Self-Efficacy Scale (GSES), and the Satisfaction with Life Scale (SWLS). Statistical analyses were performed using Spearman's correlation coefficients, at a significance level of α = 0.05. Results: The median score for the …

Exploring The Contextual Relationships Between Match Day Load And Recovery Biomarkers In Professional Soccer Players, Carina Hanson-Evans, Ryland Morgans, Rafael Oliveira, Jule Scholten, Roi Gil, Ben Ryan, Jon Oliver, Piotr Żmijewski, Michael G. Hughes

Baltic Journal of Health and Physical Activity

Background: This study examined the relationship between match-day (MD) load and contextual factors on recovery biomarkers in professional soccer players across the 2024/2025 competitive season. Materials and Methods: Twenty-six male professional soccer players provided blood samples following 38 competitive matches. High-sensitivity C-Reactive Protein (hs-CRP), Free-Oxygen Radicals Test (FORT), Free-Oxygen Radicals Defence Test (FORD) and Oxidative Stress Index (OSI) were analyzed. Physical MD load was measured via a Global Positioning System (GPS). Results: Differences in High-Load vs Low-Load matches did not significantly influence post-match levels of hs-CRP, FORD, FORT or OSI. Increased high-intensity running and elevated inflammation, with non-significant moderate-to-large effects …

Reducing Food Waste Through Education And Community Collaboration, Myeesha Lance, Sharneece Gary

EFNEP

This Land-Grant Press publication explores strategies to reduce food waste through education, innovation, and community engagement. It highlights consumer behaviors, date label confusion, and planning practices that drive waste, while offering practical solutions like meal planning, grocery management, and clearer food labeling. Key takeaways include the importance of behavior change, policy collaboration, and Extension-led outreach. Target audiences include educators, policymakers, community leaders, and households seeking to improve sustainability and food security

Elite Esports Players And Their Physical Health: A Systematic Review Of Injuries, Musculoskeletal Pain, And Fitness-Related Factors, Michal Steffl, Daniel Opelik, Vladimir Hlinka, Grzegorz Mikrut, Petra Hospodkova

Baltic Journal of Health and Physical Activity

Background: The rapid rise of competitive esports has sparked concerns over the physical health of elite players. Prolonged sedentary behaviour, repetitive movements, and poor ergonomic practices may predispose these athletes to injuries, musculoskeletal pain, and unfavourable body composition. Materials and methods: A systematic review following PRISMA guidelines was conducted by searching Pub-Med, Scopus, EBSCOhost, and Web of Science for cross-sectional studies on physical activity (PA), body composition, physical fitness, and musculoskeletal health in elite esports players. Data from 22 peer-reviewed studies involving 5,035 participants aged 16 to 35 were synthesized. Results: Findings consistently show that esports players engage in lower …

Beyond Electromyography: A Systematic Review And Meta-Analysis Of Ai Enabled Wearables For Neuromuscular Assessment In Sports Medicine And Rehabilitation, Dariusz T. Skalski, Michał Spieszny, Łukasz Jaworski, Marcin Żak, Artur Terbalyan, Marlena Stawiarska, Wirginia Likus, Adam Maszczyk

Baltic Journal of Health and Physical Activity

Background: Conventional laboratory based EMG systems constrain neuromuscular assessment to controlled environments, limiting ecological validity in sport and rehabilitation. While AI enabled wearable sensor systems, including surface EMG (sEMG), high density EMG (HD-EMG), inertial measurement units (IMUs), and multimodal configurations, have expanded ambulatory monitoring capabilities, no prior meta-analysis has quantitatively synthesized their agreement with laboratory grade comparators or examined the moderating roles of sensor class and task domain. Objective: To determine the overall agreement between AI enabled wearable neuromuscular systems and laboratory benchmarks; to examine sensor class and task domain as moderators of measurement fidelity; to evaluate multimodal gain over …

Eeg-Emg Coupling And Functional Neuroplasticity In Elite Combat Athletes: Effects Of Neurofeedback Training On Corticomuscular Coherence And Performance, Alicja Markiel, Kinga Łosińska, Marcin Żak, Adam Maszczyk

Baltic Journal of Health and Physical Activity

Background: Neurofeedback training has gained attention as a neuroplasticity based intervention for athletic performance, yet pathways linking cortical oscillatory modulation to neuromuscular adaptation and strength remain poorly characterized in elite combat athletes. Objective: This study examines whether EEG neurofeedback targeting sensorimotor alpha upregulation and frontal theta/delta modulation enhances cortico-muscular coherence, neuromuscular function, and maximal strength in elite MMA athletes. Methods: Thirty elite male MMA athletes (n = 10/arm) were randomized to intensive neurofeedback (E20G, 20 sessions), abbreviated neurofeedback (E15G, 15 sessions), or sham control. EEG spectral indices, EMG parameters (RMS, MF, iEMG, onset latency), beta band CMC, and maximal strength …

Analyzing Cultural Alignment In Rwandan Sexual And Reproductive Health Education, Amit Gerstein

Journal of Critical Global Issues

Rwandan education cannot be understood outside the context of colonization. This study investigates the cultural alignment of Rwandan sexual and reproductive health (SRH) education. Using existing literature on indigenous sexuality and reflective practice from teaching in a Rwandan secondary school, this paper analyzes three SRH curricula to examine the extent to which they incorporate local knowledge versus Western scripts. The analysis focuses on four key areas: the definition of sex, contraception, consent, and female anatomy.

The findings reveal significant disconnects, where Western narratives regarding sex and sexuality appear to overwrite or displace indigenous sexual knowledge and practice. This study concludes …

Female Athletes With Differences Of Sex Development (Dsd): A Christian Perspective On Fairness And Compassion, Angela M. Robles

Movement and Being: The Journal of the Christian Society for Kinesiology, Leisure and Sports Studies

One of the most significant controversies in elite women’s sport relates to the participation of female athletes with differences of sex development (DSD), as demonstrated by recent Olympic debates surrounding athletes like Imane Khelif and Caster Semenya. Today, a complex challenge continues to evolve at the intersection of DSD and competitive sports, and it requires careful consideration. The central argument of this paper is that DSD athletes are worthy of compassionate treatment grounded in their inherent dignity, and is founded on the understanding of what it means for humans to be created in the image of God (imago Dei). The …

A Holistic Christian Perspective On Wellness For College Students - A Qualitative Analysis, Shari L. Jurgens, Deb Majewski, Jessica Clevering

Movement and Being: The Journal of the Christian Society for Kinesiology, Leisure and Sports Studies

Aim: This study sought to explore the impact of a Christ-centered, holistic wellness course on college-aged students’ understanding of key wellness principles. The goal was to gain insight into how students comprehend and apply these principles considering their spiritual and personal development.

Background: Wellness education for undergraduate students is both timely and essential, especially within Christian higher education, where nurturing the whole person is a core value. A common misconception is that wellness pertains only to physical and mental health. However, Scripture affirms that human flourishing involves a harmony of body, mind, and spirit. A holistic, biblically informed approach to …

The Virtue Of Hope In Sports Through Spe Salvi And Its Role In Faith, Resilience, And Character Formation In Student-Athletes, Hansson G. Labisig, Arvin D. Eballo

Movement and Being: The Journal of the Christian Society for Kinesiology, Leisure and Sports Studies

Pope Benedict XVI, in Spe Salvi, presents hope as a transformative and redemptive virtue that enables believers to live and suffer differently, rooted in faith in God. He writes, “The one who has hope lives differently.” This study develops a theological-pastoral framework for integrating the virtue of hope into the faith formation of student-athletes within Catholic educational institutions, positioning sport as a genuine locus theologicus for Religious Education and evangelization. Employing the See–Judge–Act methodology, it draws from Spe Salvi, Aquinas’s Summa Theologiae, and the Vatican document Giving the Best of Yourself, in dialogue with C. R. Snyder’s psychological theory …

Exercise-Induced Gene Expression Profiles In Adults With Obesity: A Systematic Review Of Molecular Adaptation, Brandon Galvan, Luis Alberto Flores, Flor Isela Torres-Rojo, Natanael Cervantes-Hernández, Cinthia Verónica Villegas-Balderrama, Liliana Aracely Enríquez-Del-Castillo

Baltic Journal of Health and Physical Activity

Background: Obesity is a multifactorial and chronic condition characterized by excess adiposity and systemic low-grade inflammation. Exercise exerts metabolic and anti-inflammatory effects partly mediated through gene expression modulation in skeletal muscle and adipose tissue. However, heterogeneous responses among obese individuals suggest that genetic and epigenetic mechanisms shape exercise adaptation. Objective: This systematic review aimed to identify the genes and molecular pathways modulated by physical exercise in adults with obesity, and to classify them according to their biological functions across different exercise modalities. Methods: Following PRISMA guidelines, randomized controlled trials were searched in PubMed, SpringerLink, Science Direct, Cochrane, LILACS, Web of …

The Effects Of Ballistic Resistance Training On Upper-Limb Power And Reaction Time In Youth Épée Fencers, Mahmoud Sallam, Mazin Hasan Alhasany, Hachin Chani, Ghofran Bashir, Bushra Al-Hammashi, Gaffar Saad, Hussein Hashos, Amr Hamza, Mariola Gepfert

Baltic Journal of Health and Physical Activity

Background: Explosive power and rapid reaction time are crucial in fencing. Ballistic resistance training (BRT) may improve these qualities but is rarely applied in fencing. Materials and methods: To assess the effects of an eight-week BRT program on upper-limb power and reaction time in youth Egyptian épée fencers, nineteen male fencers (aged 16.6 ± 1.5) were randomly divided into a BRT group (n = 10) and a control group (n = 9). The BRT group added three weekly 30-minute sessions of "Ballistic Six" exercises to regular fencing training. Tests before and after included: tennis ball throw (power), armed …

Are Combat Athletes Different Sleepers? A Pittsburgh Sleep Quality Index-Based Comparative Survey Across Athletic Populations, Zofia Tkocz, Małgorzata Hołda Dr, Michał Spieszny, Adam Zając, Robert Trybulski, Aleksandra Filip-Stachnik

Baltic Journal of Health and Physical Activity

Background: Sleep plays an important role in athletic performance, recovery, and cognitive function. The aim of this study was to compare sleep quality and selected sleep-related  variables in combat sports athletes and athletes from other sport disciplines . Materials and Methods: Ninety-eight competitive athletes participated in the study, including 52 combat sports athletes and 46 athletes  representing other sport disciplines. Sleep quality was assessed using the modified Pittsburgh Sleep Quality Index (PSQI) with a weekly recall period, global PSQI score and additional  variables, such as sleep duration, sleep latency, and habitual sleep-wake times, were analyzed using general linear models adjusted …

Objectively And Subjectively Measured Physical Activity Levels Among Children And Adolescents In Poland (2012–2022): A Systematic Review, Jarosław Herbert, Vasylyna Petrovets

Baltic Journal of Health and Physical Activity

This article aims to provide a comprehensive review of research on physical activity levels among children and adolescents in Poland from 2012 to 2022, considering both objective and subjective assessment methods. A systematic review of the literature was conducted in accordance with the PRISMA reporting recommendations. PubMed, Scopus, Web of Science, Google Scholar databases, as well as Polish scientific databases were searched. The review included studies published from 2012 to 2022, on children and adolescents aged 3–18 living in Poland, assessing physical activity levels using objective and/or subjective methods. This analysis of the selected studies showed that physical activity levels …

Influence Of Peak Height Velocity On The Level Of Motor Skills And Anthropometric Features In Young Male Footballers, Dariusz Tadeusz Skalski, Magdalena Prończuk, Artur Terbalyan, Kinga Łosińska, Adam Maszczyk, Robert Krzysztof Roczniok

Baltic Journal of Health and Physical Activity

Background: This study examines the influence of Peak Height Velocity (PHV) on motor abilities and anthropometric characteristics of young male football players aged 12–16. The research aimed to determine whether PHV significantly affects motor performance beyond the chronological age, providing insights for talent identification and training optimization. Materials and methods: A total of 248 male football players from four professional academies were assessed and categorized into three maturation groups: Pre-PHV (n = 95, 38.3%), Mid-PHV (n = 98, 39.5%), and Post-PHV (n = 55, 22.2%) Anthropometric measurements included height, body mass, BMI, and leg length, while motor tests …

Urban Indian Parents' Occupational Perceptions Of Play And Governance Of Children's Excessive Screen Time Preferences And Behaviours In This Digital Era, Joanna Priyadarshini Udaykumar, Tony Sam George

International Journal of Playwork Practice

Abstract

Children’s innate urge to engage in joyous, self-directed, meaningful, iterative activities embodies their unique play experiences and facilitates their holistic development. However, the exponential growth of digital technology in an urbanized world has transformed their social landscape by offering them a plethora of novel play opportunities that ‘pushes children away from the outdoors and pulls them indoors’. Moreover, the radical transition from nature-based recreation to media-centric activity insinuates the surge of a global pandemic characterized by low physical activity, sleep deprivation and sedentary, lifestyle diseases. This emerging trend reflects children’s predilection for videophilia over biophilia due to the dominance …

The Readiness Reset: Sleep, Stress, And Pain Management For Tactical Performance, Lauren Fried

Tactical & Occupational Performance Conference

Tactical professionals operate in high-demand environments where sleep disruption, chronic stress, and persistent pain are often normalized, but these factors significantly affect readiness, resilience, and long-term performance. This session explores how sleep, stress, and pain interact at the physiological and neurological levels to influence decision-making, recovery, injury risk, and operational effectiveness in first responders and military personnel.

Participants will gain a deeper understanding of how nervous system regulation, circadian rhythms, and pain perception affect both physical and cognitive performance under stress. Drawing on current research and applied human performance principles, this session highlights practical, field-applicable strategies that tactical professionals and …

The Effect Of Weight Training With Blood Flow Restriction On Muscle Strength Development In Mma, Tomáš Kozák, Marek Kokinda, Pavel Ružbarský

Baltic Journal of Health and Physical Activity

Background: This study aimed to elucidate the effect of weight training with blood flow restriction (BFR) on explosive power and isokinetic strength in combat athletes. Materials and methods: The sample included 12 male MMA fighters divided into a control (19.50±0.50 years) and an experimental (18.00±1.00 years) group. Participants trained twice weekly for 8 weeks, with BFR in the experimental group. Explosive power was assessed using following tests by Optogait: countermovement push-up, kneeling countermovement push-up and kneeling squat push-up for upper limbs and countermovement jump, countermovement jump with free arms and squat jump for lower limbs. Isokinetic strength was measured by …

Whose Game Is It? Re-Centering Athlete Voice In Interscholastic Sports: A Literature Review, Nick Pocius

Essays in Education

Interscholastic athletics have long been positioned as educational spaces that support the holistic development of young people. However, an increasing emphasis on outcomes such as winning, advancement, and visibility has shifted the experience away from its intended purpose. This article examines the growing disconnect between what athletes report valuing in their sport experience and the expectations imposed by adults and broader societal pressures. Drawing on motivational frameworks such as Self-Determination Theory and achievement goal theory, alongside practitioner experience, the article identifies four key elements that athletes consistently prioritize: belonging, growth, autonomy, and meaningful engagement. It then explores how external influences, …

Granular Phenotyping Of Neuromuscular And Cortical Adaptation In Elite Judo Athletes: A Three-Group Experimental Analysis Using Eeg And Emg Markers, Magdalena Prończuk, Dariusz Tadeusz Skalski, Wirginia Likus, Łukasz Jaworski, Adam Maszczyk, Kinga Łosińska

Baltic Journal of Health and Physical Activity

Background: Inter-individual variability in neuromuscular and cortical adaptation presents a significant challenge for the personalization of neurofeedback protocols in elite sports, particularly in judo. Objective: This study aimed to identify distinct adaptation phenotypes in elite Polish judo athletes by integrating electrophysiological and performance-based measures following an EEG biofeedback intervention. Materials and methods: Twenty-four male athletes from the Polish national judo team completed a 15-session EEG biofeedback protocol targeting frontal alpha asymmetry. Post-intervention assessments included surface EMG amplitude (RMS), median frequency (MF), percentage EMG change, composite EEG indices (EEG_SUM), and normalized lower-limb strength. A composite Global Adaptation Index (GAI) was used …

Determinants Of Corporal Punishment And Severe Physical Punishment In Egypt: A Mixed-Methods Analysis For Child Protection Policy, Marwa Moustafa Nassef

Theses and Dissertations

Corporal punishment (CP) and severe physical punishment (SPP) remain a major public health, child rights, and child protection policy concern. In Egypt, despite legislative reforms, survey-weighted analysis of the 2021 Egypt Family Health Survey (EFHS) 2021 (CAPMAS, 2022) reveals prevalence rates of 60.5% for CP and 27.4% for SPP among children aged 1–14 (author’s calculations using EFHS-2021, n=7623), yet evidence distinguishing the determinants of routine corporal punishment from escalation to severe physical punishment remains limited in low- and middle-income contexts. Guided by Bronfenbrenner’s ecological framework, this mixed-methods study identifies key drivers of CP and its escalation to SPP among Egyptian …

Evolution Lower Limb Functional Asymmetry In Women's 400 M Hurdles From 1978-2022, Janusz Iskra, Wojciech Paśko, Paweł Gwiazdoń, Magdalena Chanas, Krzysztof Przednowek

Baltic Journal of Health and Physical Activity

Background: Functional asymmetry of the lower limbs in the technique of clearing 10 hurdles in the 400 m hurdles event was the subject of the study. Materials and methods: This study investigates the patterns of hurdle clearance, distinguishing between left and right lead legs by 196 female hurdlers competing in major championship events (including Olympic Games, World Championships, European Championships) from 1978 to 2022. The hurdlers were categorized into three groups based on competition periods: Group A (1978–2000), Group B (2001–2011), and Group C (2012–2022). The share of the left lead leg (assumed by most authors to be the lead …

Remote Hr-Guided High-Intensity Interval Training With Weekly Health Monitoring In Breast Cancer Patients During Chemotherapy: A Moderation Analysis Of Physiological Predictors, Madara Ketlīna Štarka-Rantiņa, Rudolfs Ceseiko, Martins Campa, Maksims Zolovs, Greta Franceska Jermolenko, Kristaps Eglitis, Alicia Llorente, Aija Linē, Aija Klavina

Baltic Journal of Health and Physical Activity

Background: The study aimed to investigate the effects of a six-month remotely monitored heart rate – guided high-intensity interval training (HIIT) program on aerobic capacity, functional performance, and weekly self-reported health outcomes in women with stage II–III breast cancer undergoing neoadjuvant chemotherapy. Materials and methods: Fifty-six women (mean age 47 ± 8 years) were randomly assigned (1:1) to a HIIT group or a control group (CG). Thirty-five participants were included in analyses (HIIT group = 17; CG = 18). HIIT group performed 4 × 4-minute HIIT sessions at the intensity of 85–95% of the peak heart rate, two to three …

Effects Of A 10-Day Remote Ischemic Preconditioning Protocol On Anaerobic And Aerobic Performance And Post-Exercise Cytokine Responses, Paulina Brzezińska, Jan Mieszkowski, Madalena Kochanowicz, Andżelika Borkowska, Jędrzej Antosiewicz, Andrzej Kochanowicz

Baltic Journal of Health and Physical Activity

Background: Remote ischemic preconditioning (RIPC) consists of brief cycles of limb is-chemia and reperfusion and has been proposed as an ergogenic strategy. This study examined whether a 10-day lower-limb RIPC protocol affects anaerobic and aerobic performance and post-exercise cytokine responses in physically active men. Materials and methods: Sixty healthy, physically active men were assigned to anaerobic (Wingate Anaerobic Test (WAnT), n = 29) or aerobic (Bruce treadmill test (BTT), n = 28) protocols and completed a 10-day lower-limb RIPC (220 mmHg) or SHAM (20 mmHg) intervention. Serum IL-6, IL-10, and IL-15 were measured at baseline and immediately post-exercise before and …

An Equity-Based And Culturally Responsive Bill Of Rights For Early Childhood Students Of Color With Exceptionalities, Evette Simmons-Reed, Michelle Frazier Trotman Scott, Gloria Tardash, Mildred Boveda, Donna Y. Ford

Perspectives on Early Childhood Psychology and Education

The COVID-19 pandemic exacerbated existing disparities in early intervention (EI) and early childhood special education (ECSE) services for culturally and linguistically diverse (CLD) disabled children, exposing critical gaps in access, services and support. systemic inconsistencies in implementation, training, and funding, remain barriers limit opportunities for CLD students to benefit, despite the aims of the Individuals with Disabilities Improvement Act (IDEA). To address these inequities, this manuscript proposes an expanded and updated Culturally Responsive Equity-Based Bill of Rights for EI and ECSE. Building upon Ford and colleagues' (2018) work, this revised document extends protections to children aged zero to five, emphasizing …

Guest Editor's Introduction: Methodological Innovations For Advancing Early Childhood Educational And Psychological Research, Anthony Mangino Ph.D.

Perspectives on Early Childhood Psychology and Education

The goal of this special issue is to provide you, the inquisitive reader and developmental scientist, with some of the methodological tools to aid in augmenting your analytic capacity.