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Hideki Takagi

Biographic Data

ID3747326
NAMEHideki Takagi
GIVEN NAMESHideki
FAMILY NAMETakagi
SIGNATURETAKAGI H
AFFILIATIONSUniversity of Tsukuba
ORCID0000-0001-8797-7014
VERIFIEDYes
TOTAL WORKS6
TOTAL CITATIONS2
AUTHOR COUNT6
EDITOR COUNT0
FIRST PUBLICATION YEAR2022
LATEST PUBLICATION YEAR2026
H-INDEX1
  • Foot kinematic and kinetic differences associated with eggbeater kick technique: A time-series analysis in water polo players

    Open Access•Eisuke Kawai, Daiki Koga et al.•ARTICLE•Frontiers in Sports and Active…•2026

    Eggbeater kicking is essential for maintaining body position and supporting technical actions in water polo, yet the time-specific biomechanical characteristics associated with higher performance remain unclear. This study aimed to identify the characteristics of water polo players with higher eggbeater kicking performance by comparing foot kinematics and kinetics using time-series analysis. Twenty-two male university players performed continuous…

  • Prevalence and Factors Associated with Poor Subjective Sleep Quality Among Electronic Sports Players: A Cross-Sectional Study

    Open Access•Takafumi Monma, Takashi Matsui et al.•ARTICLE•SAGE Open•2026

    Sleep plays a crucial role in cognitive ability and electronic sports (esports) performance. Although gamers are often known for having poor sleep conditions, few studies have investigated sleep quality among electronic sports players. This study aimed to clarify the prevalence of poor subjective sleep quality among esports players, including the differences between professionals and amateurs, as well as the associated factors in esports activiti…

  • Effect of different breathing frequencies with breath-holding on muscle activity and coordination during butterfly swimming in national-level female swimmers

    Open Access•Keisuke Yamakawa, Yasuo Sengoku et al.•ARTICLE•Frontiers in Sports and Active…•2025•References: 1

    The aim of this study was to clarify the effect of different breathing frequencies with breath-holding on muscle activity and coordination during butterfly swimming in competitive swimmers. Eight national-level female swimmers participated in this study. They performed 25-m maximal butterfly swims with two breathing frequencies (task 1: swimming with the frontal breathing action for every stroke, and task 2: swimming while alternating the cycles …

  • Cognitive decline with pupil constriction independent of subjective fatigue during prolonged esports across player expertise levels

    Open Access•Takashi Matsui, Shion Takahashi et al.•ARTICLE•Computers in Human Behavior•2024

    Cognitive fatigue, a transient cognitive decline stemming from extended mental and physical activity, is well established in conventional contexts. However, its manifestation and self-awareness during digital pursuits, as an integrated style of mental and physical activity, notably in electronic sports (esports), remain underexplored. Here we show that, using virtual football as a representative model for esports, prolonged esports cause cognitiv…

  • Changes in Kinematics and Muscle Activity With Increasing Velocity During Underwater Undulatory Swimming

    Open Access•Keisuke Kobayashi Yamakawa, Keisuke Yamakawa et al.•ARTICLE•Frontiers in Sports and Active…•2022•Cited by: 1•References: 27

    This study aimed to investigate the changes in kinematics and muscle activity with increasing swimming velocity during underwater undulatory swimming (UUS). In a water flume, 8 male national-level swimmers performed three UUS trials at 70, 80, and 90% of their maximum swimming velocity (70, 80, and 90%V, respectively). A motion capture system was used for three-dimensional kinematic analysis, and surface electromyography (EMG) data were collected…

  • Relationship Between Hand Kinematics, Hand Hydrodynamic Pressure Distribution and Hand Propulsive Force in Sprint Front Crawl Swimming

    Open Access•Daiki Koga, Takaaki Tsunokawa et al.•ARTICLE•Frontiers in Sports and Active…•2022•Cited by: 1•References: 25

    PurposeThis study investigated the relationship between hand kinematics, hand hydrodynamic pressure distribution and hand propulsive force when swimming the front crawl with maximum effort.MethodsTwenty-four male swimmers participated in the study, and the competition levels ranged from regional to national finals. The trials consisted of three 20 m front crawl swims with apnea and maximal effort, one of which was selected for analysis. Six small…

  • Changes in Kinematics and Muscle Activity With Increasing Velocity During Underwater Undulatory Swimming

    Open Access•Keisuke Kobayashi Yamakawa, Keisuke Yamakawa et al.•ARTICLE•Frontiers in Sports and Active…•2022•Cited by: 1•References: 27

    This study aimed to investigate the changes in kinematics and muscle activity with increasing swimming velocity during underwater undulatory swimming (UUS). In a water flume, 8 male national-level swimmers performed three UUS trials at 70, 80, and 90% of their maximum swimming velocity (70, 80, and 90%V, respectively). A motion capture system was used for three-dimensional kinematic analysis, and surface electromyography (EMG) data were collected…

  • Relationship Between Hand Kinematics, Hand Hydrodynamic Pressure Distribution and Hand Propulsive Force in Sprint Front Crawl Swimming

    Open Access•Daiki Koga, Takaaki Tsunokawa et al.•ARTICLE•Frontiers in Sports and Active…•2022•Cited by: 1•References: 25

    PurposeThis study investigated the relationship between hand kinematics, hand hydrodynamic pressure distribution and hand propulsive force when swimming the front crawl with maximum effort.MethodsTwenty-four male swimmers participated in the study, and the competition levels ranged from regional to national finals. The trials consisted of three 20 m front crawl swims with apnea and maximal effort, one of which was selected for analysis. Six small…

  • Changes in Kinematics and Muscle Activity With Increasing Velocity During Underwater Undulatory Swimming

    Open Access•Keisuke Kobayashi Yamakawa, Keisuke Yamakawa et al.•ARTICLE•Frontiers in Sports and Active…•2022•Cited by: 1•References: 27

    This study aimed to investigate the changes in kinematics and muscle activity with increasing swimming velocity during underwater undulatory swimming (UUS). In a water flume, 8 male national-level swimmers performed three UUS trials at 70, 80, and 90% of their maximum swimming velocity (70, 80, and 90%V, respectively). A motion capture system was used for three-dimensional kinematic analysis, and surface electromyography (EMG) data were collected…

  • Relationship Between Hand Kinematics, Hand Hydrodynamic Pressure Distribution and Hand Propulsive Force in Sprint Front Crawl Swimming

    Open Access•Daiki Koga, Takaaki Tsunokawa et al.•ARTICLE•Frontiers in Sports and Active…•2022•Cited by: 1•References: 25

    PurposeThis study investigated the relationship between hand kinematics, hand hydrodynamic pressure distribution and hand propulsive force when swimming the front crawl with maximum effort.MethodsTwenty-four male swimmers participated in the study, and the competition levels ranged from regional to national finals. The trials consisted of three 20 m front crawl swims with apnea and maximal effort, one of which was selected for analysis. Six small…

  • Cognitive decline with pupil constriction independent of subjective fatigue during prolonged esports across player expertise levels

    Open Access•Takashi Matsui, Shion Takahashi et al.•ARTICLE•Computers in Human Behavior•2024

    Cognitive fatigue, a transient cognitive decline stemming from extended mental and physical activity, is well established in conventional contexts. However, its manifestation and self-awareness during digital pursuits, as an integrated style of mental and physical activity, notably in electronic sports (esports), remain underexplored. Here we show that, using virtual football as a representative model for esports, prolonged esports cause cognitiv…

  • Effect of different breathing frequencies with breath-holding on muscle activity and coordination during butterfly swimming in national-level female swimmers

    Open Access•Keisuke Yamakawa, Yasuo Sengoku et al.•ARTICLE•Frontiers in Sports and Active…•2025•References: 1

    The aim of this study was to clarify the effect of different breathing frequencies with breath-holding on muscle activity and coordination during butterfly swimming in competitive swimmers. Eight national-level female swimmers participated in this study. They performed 25-m maximal butterfly swims with two breathing frequencies (task 1: swimming with the frontal breathing action for every stroke, and task 2: swimming while alternating the cycles …

  • Foot kinematic and kinetic differences associated with eggbeater kick technique: A time-series analysis in water polo players

    Open Access•Eisuke Kawai, Daiki Koga et al.•ARTICLE•Frontiers in Sports and Active…•2026

    Eggbeater kicking is essential for maintaining body position and supporting technical actions in water polo, yet the time-specific biomechanical characteristics associated with higher performance remain unclear. This study aimed to identify the characteristics of water polo players with higher eggbeater kicking performance by comparing foot kinematics and kinetics using time-series analysis. Twenty-two male university players performed continuous…

  • Prevalence and Factors Associated with Poor Subjective Sleep Quality Among Electronic Sports Players: A Cross-Sectional Study

    Open Access•Takafumi Monma, Takashi Matsui et al.•ARTICLE•SAGE Open•2026

    Sleep plays a crucial role in cognitive ability and electronic sports (esports) performance. Although gamers are often known for having poor sleep conditions, few studies have investigated sleep quality among electronic sports players. This study aimed to clarify the prevalence of poor subjective sleep quality among esports players, including the differences between professionals and amateurs, as well as the associated factors in esports activiti…

Kinematics (4 works) · Medicine (4 works) · Anatomy (3 works) · Physics (3 works) · Sports Performance and Training (3 works) · Biceps (2 works) · Classical mechanics (2 works) · Electromyography (2 works) · Mechanics (2 works) · Muscle activation and electromyography studies (2 works)

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