Shin-Ichiro Moriyama

@u-gakugei.ac.jp

Department of Health and Sports Sciences
Tokyo Gakugei University

Shin-Ichiro Moriyama


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https://researchid.co/shinichiromoriyama0306

RESEARCH, TEACHING, or OTHER INTERESTS

Multidisciplinary, Physiology, Education
10

Scopus Publications

124

Scholar Citations

6

Scholar h-index

4

Scholar i10-index

Scopus Publications

  • Does The Menstrual Cycle Phase Influence Physical Fitness Performance In Athletes And Non-athlete Female University Students With Mild Menstrual-Related Symptoms?
    Shin-Ichiro Moriyama, Daniel A. Marinho, Henrique P. Neiva, Ana R. Alves, Ricardo Ferraz, et al.
    Open Sports Sciences Journal, 2026
    Introduction Previous studies have explored the influence of the menstrual cycle on various aspects of exercise performance. However, associations between menstrual cycle phases and fitness performance in women remain inconclusive. This study aimed to examine the effects of the menstrual cycle and premenstrual symptoms on physical fitness test outcomes among female university students with and without regular exercise habits. Methods Eighteen female athletes and 13 female non-athlete university students volunteered for this study. Only those who completed all test sessions were included in the final analysis, resulting in the analysis of data from eight athletes (height: 1.66 ± 0.04 m; weight: 57.1 ± 2.9 kg) and eight non-athletes (height: 1.62 ± 0.05 m; weight: 58.0 ± 6.7 kg). Basal body temperature was used to categorize the menstrual cycle into three phases: menstrual, follicular, and luteal. A validated questionnaire assessed physical and mental symptoms related to menstruation. Fitness tests included handgrip strength, number of sit-ups, sit-and-reach, number of side-steps, 1000-m run, 50-m sprint, and standing long jump. Results In both groups, physical symptoms differed significantly between the menstrual phase and other phases. Mental symptoms showed no significant changes in athletes, whereas three mental symptoms varied significantly in non-athletes. No significant interaction was observed between the group and menstrual cycle phase in any physical fitness measure. Athletes outperformed non-athletes in all tests, except for handgrip strength, regardless of the menstrual cycle phase. Discussion These findings suggest that among women with mild premenstrual symptoms, the menstrual cycle may have a limited impact on physical fitness, regardless of training status. These outcomes might be relevant for physical fitness professionals and researchers, improving the understanding of the effects of menstrual cycle phases on physical fitness and psychological symptoms in women. Conclusion The menstrual cycle appears to have a minimal impact on physical fitness test performance among female university students with mild menstrual symptoms, regardless of training status.
  • Swimming speed comparison between two distinct arm pulls during the butterfly swim stroke
    Jorge E Morais, Daniel A Marinho, Henrique P Neiva, Shin-Ichiro Moriyama, Tiago M Barbosa
    International Journal of Sports Science and Coaching, 2025
    The aim of this study was to compare the butterfly swimming speed during the insweep phase of two distinct arm pull patterns. Ten national-level swimmers (5 males with 17.5 ± 0.8-years and 5 females with 16.8 ± 0.9-years) were analyzed while performing butterfly all-out trials based on two distinct arm-pull patterns (“bent” and “straight”). The “bent” arm-pull refers to the stroke kinematics they use to swim. The “straight” arm-pull refers to a more extended elbow than they used to swim. Based on discrete variables, swimming speed was faster in the “straight” than the “bent” arm-pull, but not significantly ( p = 0.546). Non-significant differences were also noted for the remaining discrete variables. Conversely, Statistical Parametric Mapping (SPM, continuous analysis) identified significant differences in swimming speed between ∼42% and ∼60% (insweep phase and the beginning of the upsweep phase; p = 0.001), and ∼83% and ∼87% (halfway through the release and recovery, respectively; p = 0.043) of the stroke cycle. SPM was more sensitive in identifying differences in swimming speed between arm pulls. Swimmers were faster while performing the “straight” arm pull than with the “bent” arm pull, predominately based on a faster swimming speed during the insweep phase.
  • Comparison of swimming velocity between age-group swimmers through discrete variables and continuous variables by Statistical Parametric Mapping
    Jorge E. Morais, Tiago M. Barbosa, Tiago Lopes, Shin-Ichiro Moriyama, Daniel A. Marinho
    Sports Biomechanics, 2024
    The aim of this study was to compare the swimming velocity in front-crawl between age-group swimmers using discrete variables against Statistical Parametric Mapping (SPM). The sample consisted of 30 young male swimmers divided into three groups (each with 10 swimmers) based on their age (group #1: 13.60 ± 0.84 years; group #2: 15.40 ± 0.32 years; group 3: 16.39 ± 0.69 years). Swimmers performed three maximal trials in front-crawl. The best performance was used for analysis. Comparison of swimming velocity between groups was analysed using discrete variables and as a continuous variable (SPM). As a discrete variable, the mean swimming velocity showed a significant difference between groups (p < 0.05). Moreover, when analysed by SPM, swimming velocity showed a significant difference (p = 0.021) between the ~ 44% and ~ 51% of the stroke cycle (transition of the propulsion phases between sides). Post-hoc comparison revealed a significant difference between group #1 and group #3 only in SPM analysis. Researchers, coaches, and practitioners should know that both measurement approaches can be used simultaneously. However, SPM offers more sensitive and accurate results about the swimmers' stroke cycle.
  • Does a jammer-type racing swimsuit improve sprint performance during maximal front-crawl swimming?
    Shin-Ichiro Moriyama, Hirotoshi Mankyu, Takaaki Tsunokawa, Tsubasa Kurono, Hayato Mizukoshi, et al.
    Sports Biomechanics, 2024
    We investigated the effects of jammer-type racing swimsuits (RS) on swimming performance during arm-stroke-only (pull) and whole-body stroke (swim) in 25-m front-crawl with maximal effort. Twelve well-trained male collegiate swimmers wore RS and a conventional swimsuit (CS) and performed three tests: pull, swim, and pull using the system to measure active drag (MAD pull). Swimming velocity and intra-abdominal pressure (IAP) were determined in all tests. Stroke indices during pull and swim and drag-swimming velocity relationship and maximum propulsive power during MAD pull were also determined. Swimming velocities during pull and swim while wearing an RS (1.59 ± 0.13 and 1.77 ± 0.09 m·s-1, respectively) were significantly higher than those wearing a CS (1.57 ± 0.14 and 1.74 ± 0.08 m·s-1, respectively). Stroke length during pull and swim was significantly greater while wearing an RS (1.68 ± 0.12 and 1.83 ± 0.13 m, respectively) than wearing a CS (1.63 ± 0.10 and 1.81 ± 0.13 m, respectively). However, no significant differences were confirmed between the other variables in all tests. In conclusion, swimming performance is improved when wearing an RS compared with a CS.
  • Effect of resisted sled sprint with different loads on running velocity, step frequency, and step length in trained collegiate track and field athletes
    Motricidade, 2023
  • How does 11-week detraining affect 11-12 years old swimmers’ biomechanical determinants and its relationship with 100 m freestyle performance?
    Jorge E. Morais, Vitor P. Lopes, Tiago M. Barbosa, Shin-Ichiro Moriyama, Daniel A. Marinho
    Sports Biomechanics, 2022
    The aim of this study was to analyse the detraining process that occurs during a season break, and its influence on the performance, anthropometrics, and biomechanics of young swimmers. The sample included 54 young swimmers (22 boys: 12.79 ± 0.71 years; 32 girls: 11.78 ± 0.85 years). Performance for the 100 m freestyle and anthropometric and biomechanical variables were evaluated as main determinants. Performance impaired significantly for boys (2.17%) and girls (1.91%). All anthropometric variables increased between moments of assessment for boys and girls. Overall, the boys enhanced all biomechanical variables during the detraining period, and girls showed mixed results. For both sexes, the stroke index was the variable with the highest increase (boys: Δ = 16.16%; d = 0.89; p = 0.001; girls: Δ = 19.51%; d = 1.06; p = 0.002). Hierarchical linear modelling showed that the height retained the amount of impairment in the performance. One unit of increase in the height (cm) led to less 0.41 s impairment in the performance. Present data indicated that during an 11-weeks detraining period, young swimmers impaired their performance, but the determinant factors showed an impaired relationship. This increase in the determinant factors is mainly related to the increase in the swimmers’ anthropometrics. Moreover, the increase in height was responsible for retaining the performance impairment.
  • The Impact of Assisted Swimming on Front Crawl Performance
    Shin-Ichiro Moriyama, Yasunori Watanabe, Kosuke Masuda, Yugo Toyoda, Jorge E. Morais, et al.
    Journal of Men S Health, 2022
  • Effect of Additional Buoyancy Swimsuits on Performance of Competitive Swimmers
    Shin-Ichiro Moriyama, Yasunori Watanabe, Tsubasa Kurono, Jorge E. Morais, Daniel A. Marinho, et al.
    Open Sports Sciences Journal, 2021
    Background: When in water, the Centers of Buoyancy (CoB) and Mass (CoM) of the human body are positioned cranially and caudally, respectively. With increasing distance between these centers, the sinking torque of the lower limbs increases, with a subsequent decrease in swimming performance due to increased drag. Objective: To clarify the effect of additional buoyancy swimsuits on swimming performance. Methods: The subjects were eight competitive male swimmers of mean ±SD age 21±2 years. Swimming performance was compared between Conventional (CS) and Additional Buoyancy Swimsuits (ABS). CoM and CoB were identified on land and in water, respectively, with the swimmers maintaining a horizontal posture. CoM was measured by the reaction board method. CoB was calculated as the force exerted in the vertical direction accompanied by changes in inspiratory volume. Swimming velocity and Blood Lactate (BL) concentration value during 200 m front crawl in trials at four different speeds (curve test) were recorded as swimming performance. Results: No significant difference in inspiratory volume was observed between CS and ABS (small effect size, d=0.28). The distance between CoM and CoB was significantly shorter for CS than ABS (p &lt; 0.001; large effect size, d=1.08). Both swimming velocity at BL of 4 mmol·L-1 and maximal effort were significantly faster for ABS (p &lt; 0.042; 0.008), with large effect size (d=0.91; 0.98). However, there was no significant difference in maximal BL between CS and ABS (small effect size, d=0.37). Conclusion: ABS improves swimming performance by streamlining the horizontal posture.
  • The effect of the start and finish in the 50 m and 100 m freestyle performance in elite male swimmers
    Daniel A Marinho, Tiago M Barbosa, Henrique P Neiva, Shin-Ichiro Moriyama, António J Silva, et al.
    International Journal of Performance Analysis in Sport, 2021
    The aim of this study was to: (1) verify differences between swimmers of the same competitive level in variables related to the start and finish (50 m and 100 m freestyle); (2) verify if starting and finish variables are responsible for faster race time, and which starting variables are responsible for the start performance in such events. For the 50 m and 100 m freestyle race at the junior European Championships 2019, 86 and 88 male swimmers were analysed, respectively. A set of starting and finishing variables were used for analysis. Both races (50 m: p < 0.001; 100 m: p < 0.001) presented a significant level effect for the final race time. The same trend was observed for the start and finish performances. For both races, hierarchical linear modelling retained the 15 m mark time and finish speed as predictors. The 50 m start retained the reaction time and underwater speed, and the 100 m start retained the reaction time and the water break distance. This indicates the underwater phase of the start is of substantial importance to improve the 15 m mark time. Coaches and swimmers are advised to enhance the start underwater phase, and finish segments to improve the swimmers’ performance.
  • Intra-abdominal pressure during swimming
    S. Moriyama, F. Ogita, Z. Huang, K. Kurobe, A. Nagira, et al.
    International Journal of Sports Medicine, 2014
    The present study aimed to determine the intra-abdominal pressure during front crawl swimming at different velocities in competitive swimmers and to clarify the relationships between stroke indices and changes in intra-abdominal pressure. The subjects were 7 highly trained competitive collegiate male swimmers. Intra-abdominal pressure was measured during front crawl swimming at 1.0, 1.2 and 1.4 m · s−1 and during the Valsalva maneuver. Intra-abdominal pressure was taken as the difference between minimum and maximum values, and the mean of 6 stable front crawl stroke cycles was used. Stroke rate and stroke length were also measured as stroke indices. There were significant differences in stroke rate among all velocities (P<0.05). However, there was no significant difference in stroke length by velocity. Significant within-subject correlations between intra-abdominal pressure and stroke rate or stroke length (P<0.01) were observed, although there were no significant correlations between intra-abdominal pressure and stroke indices when controlling for swimming velocity. These findings do not appear to support the effectiveness of trunk training performed by competitive swimmers aimed at increasing intra-abdominal pressure.

RECENT SCHOLAR PUBLICATIONS

  • Does the menstrual cycle phase influence physical fitness performance in athlete and non-athlete female university students with mild menstrual-related symptoms?
    SI Moriyama, DA Marinho, HP Neiva, AR Alves, R Ferraz, K Matsuo
    The Open Sports Sciences Journal 18 (1), 1-13 , 2025
    2025
  • Swimming speed comparison between two distinct arm pulls during the butterfly swim stroke
    JE Morais, DA Marinho, HP Neiva, SI Moriyama, TM Barbosa
    International Journal of Sports Science & Coaching 20 (5), 2197-2203 , 2025
    2025
    Citations: 2
  • Proceedings of the CIDESD International Congress 2025
    DA Marinho, J Viana, P Mota
    Motricidade 21 (S2) , 2025
    2025
  • Analysis of upper limb thrust in assisted front-crawl swimming using statistical parametric mapping
    SI Moriyama, Y Watanabe, Y Toyoda, J Morais, H Neiva, D Marinho
    Motricidade 21, 1-2 , 2025
    2025
  • Challenges in the Introduction of the Ecological Approach in School Physical Education and Sports Coaching in Japan: Insights from Information Exchange among Stakeholders …
    M Ohira, T Ogai, J Kuroiwa, SI Moriyama, H Miki
    Motricidade 21, 1-3 , 2025
    2025
  • 日本の水泳指導に関する研究動向と課題の検討
    豊田郁豪， 橋本翔， 森山進一郎
    日本体育・スポーツ・健康学会予稿集 第 75 回 (2025), 553 , 2025
    2025
  • 月経周期における腸内細菌叢由来代謝産物と運動パフォーマンスの関連 月経周期における腸内環境とパフォーマンス
    松生香里， 森山進一郎， 須永美歌子
    日本体育・スポーツ・健康学会予稿集 第 75 回 (2025), 292 , 2025
    2025
  • そりを用いたレジスト走および推進方向からチューブを用いて引っ張るアシスト走を用いた中学校における走運動授業は生徒の意欲を高める
    松村昌紀， 直井清貴， 繁田進， 伊藤信之， 森山進一郎
    日本体育・スポーツ・健康学会予稿集 第 75 回 (2025), 539 , 2025
    2025
  • 知的障害特別支援学校の生徒は水泳授業に何を期待しているか?(発, 教, ア) 高等部生徒を対象とした意識調査より
    岩井祐一， 森山進一郎
    日本体育・スポーツ・健康学会予稿集 第 75 回 (2025), 172 , 2025
    2025
  • 競技の開始時期及びスポーツ経験が大学生アスリートの競技力向上に及ぼす影響
    深見英一郎， 穴井隆将， 小畑治， 金澤翔一， 近藤智靖， 須甲理生， ...
    体育学研究 70, 269-288 , 2025
    2025
    Citations: 1
  • Comparison of swimming velocity between age-group swimmers through discrete variables and continuous variables by Statistical Parametric Mapping
    JE Morais, TM Barbosa, T Lopes, SI Moriyama, DA Marinho
    Sports Biomechanics 23 (12), 3394-3405 , 2024
    2024
    Citations: 7
  • Does a jammer-type racing swimsuit improve sprint performance during maximal front-crawl swimming?
    SI Moriyama, H Mankyu, T Tsunokawa, T Kurono, H Mizukoshi, F Ogita
    Sports Biomechanics 23 (5), 611-623 , 2024
    2024
    Citations: 4
  • Effects of implementating a hybrid teaching model in a basketball didactic unit
    R Ferraz, J Oliveira, AR Alves, P Forte, JE Teixeira, SI Moriyama, ...
    Editura Universitatii din Pitesti , 2024
    2024
    Citations: 10
  • 様々な姿勢や呼吸を体験させる水遊びは水中環境での身体活動に未習熟な子どもの水慣れを促す
    豊田郁豪， 原英喜， 森山進一郎
    日本体育・スポーツ・健康学会予稿集 第 74 回 (2024), 591 , 2024
    2024
  • EFFECT OF RESISTED SLED SPRINT TRAINING ON SPRINTING ABILITIES OF JUNIOR HIGH SCHOOL STUDENTS
    T Hamamichi, K Naoi, S Shigeta, SI Moriyama
    ISBS Proceedings Archive 42 (1), 358 , 2024
    2024
  • Assisted towing does not affect arm stroke coordination in front-crawl swimming
    SI Moriyama, Y Watanabe, Y Toyoda, T Hamamichi, JE Morais, HP Neiva, ...
    International Society of Biomechanics in Sports , 2024
    2024
  • Effect of resisted sled sprint with different loads on running velocity, step frequency, and step length in trained collegiate track and field athletes
    T Hamamichi, K Naoi, S Shigeta, J Morais, DA Marinho, SI Moriyama
    Motricidade 19 (4), 435-442 , 2023
    2023
  • 大学生野球未熟練者における 4 週間のパラボリックスロートレーニングが制球力に及ぼす影響
    橋本翔， 森山進一郎， 大沼勇人
    日本体育・スポーツ・健康学会予稿集 第 73 回 (2023), 533 , 2023
    2023
  • 水中を歩きながら泳動作を行うウォーキングスイムは平泳ぎの技能獲得に有効である (教)
    山村涼乃， 豊田郁豪， 原英喜， 森山進一郎， 杉田渚颯
    日本体育・スポーツ・健康学会予稿集 第 73 回 (2023), 123 , 2023
    2023
  • 疾走速度および無酸素性能力の相違によるそり牽引走におけるキネマティクスの変化
    濵道健， 森山進一郎， 繁田進
    日本体育・スポーツ・健康学会予稿集 第 73 回 (2023), 556 , 2023
    2023

MOST CITED SCHOLAR PUBLICATIONS

  • The effect of the start and finish in the 50 m and 100 m freestyle performance in elite male swimmers
    DA Marinho, TM Barbosa, HP Neiva, SI Moriyama, AJ Silva, JE Morais
    International Journal of Performance Analysis in Sport 21 (6), 1041-1054 , 2021
    2021
    Citations: 18
  • How does 11-week detraining affect 11-12 years old swimmers’ biomechanical determinants and its relationship with 100 m freestyle performance?
    JE Morais, VP Lopes, TM Barbosa, SI Moriyama, DA Marinho
    Sports biomechanics 21 (9), 1107-1121 , 2022
    2022
    Citations: 15
  • Intra-abdominal pressure during swimming
    S Moriyama, F Ogita, Z Huang, K Kurobe, A Nagira, T Tanaka, ...
    International journal of sports medicine 35 (02), 159-163 , 2014
    2014
    Citations: 13
  • Effects of implementating a hybrid teaching model in a basketball didactic unit
    R Ferraz, J Oliveira, AR Alves, P Forte, JE Teixeira, SI Moriyama, ...
    Editura Universitatii din Pitesti , 2024
    2024
    Citations: 10
  • Comparison of swimming velocity between age-group swimmers through discrete variables and continuous variables by Statistical Parametric Mapping
    JE Morais, TM Barbosa, T Lopes, SI Moriyama, DA Marinho
    Sports Biomechanics 23 (12), 3394-3405 , 2024
    2024
    Citations: 7
  • 小学生のクロール泳中における呼吸動作習得の学習指導に関する研究
    金沢翔一， 森山進一郎， 須甲理生， 山縣慧子， 北川幸夫
    日本女子体育大学紀要 44, 39-46 , 2014
    2014
    Citations: 6
  • 小学校における着衣水泳実施の課題
    柴田義晴， 森山進一郎， 渡辺律子
    コーチング学研究 17 (1), 41-50 , 2004
    2004
    Citations: 6
  • 競技経験のない一般女子学生のクロール泳における異なる速度による腹腔内圧および体幹筋活動の変化
    森山進一郎， 金沢翔一， 北川幸夫， 柴田義晴
    体育測定評価研究 15, 43-49 , 2016
    2016
    Citations: 5
  • Does a jammer-type racing swimsuit improve sprint performance during maximal front-crawl swimming?
    SI Moriyama, H Mankyu, T Tsunokawa, T Kurono, H Mizukoshi, F Ogita
    Sports Biomechanics 23 (5), 611-623 , 2024
    2024
    Citations: 4
  • The impact of assisted swimming on front crawl performance
    SI Moriyama, Y Watanabe, K Masuda, Y Toyoda, JE Morais, P Forte, ...
    IMR PRESS , 2022
    2022
    Citations: 4
  • 大学生への着衣泳授業に関する検討
    目黒拓也， 金沢翔一， 豊田郁豪， 森山進一郎
    東京学芸大学紀要. 芸術・スポーツ科学系 73, 285-290 , 2021
    2021
    Citations: 3
  • 背泳ぎとバタフライの泳力向上を目的とした水泳の集中講義が大学生の泳力に及ぼす効果
    金沢翔一， 根本想， 安田純輝， 岡田悠佑， 森山進一郎
    育英短期大学研究紀要 38, 65-72 , 2021
    2021
    Citations: 3
  • Efficacy of flotation aids attached to the pelvis and thighs of beginning swimmers
    Y Watanabe, SI Moriyama, K Wakayoshi
    International journal of aquatic research and education 13 (2), 7 , 2021
    2021
    Citations: 3
  • 大学女子競泳選手における左右の足の配置がキックスタートのパフォーマンスに及ぼす影響
    金沢翔一， 森山進一郎， 宮地健人， 北川幸夫
    日本女子体育大学スポーツトレーニングセンター紀要 18, 1-5 , 2015
    2015
    Citations: 3
  • クロール全力泳における泳速度およびストローク指標と腹腔内圧の関係
    森山進一郎， 金沢翔一， 山縣慧子
    日本運動生理学雑誌/日本運動生理学会事務局 [編] 21 (1), 9-15 , 2014
    2014
    Citations: 3
  • 競泳における平泳ぎ及びバタフライのターンに関する分析的研究
    森山進一郎， 北川幸夫， 柴田義晴
    コーチング学研究 17 (1), 79-88 , 2004
    2004
    Citations: 3
  • Swimming speed comparison between two distinct arm pulls during the butterfly swim stroke
    JE Morais, DA Marinho, HP Neiva, SI Moriyama, TM Barbosa
    International Journal of Sports Science & Coaching 20 (5), 2197-2203 , 2025
    2025
    Citations: 2
  • 集中講義で開講される水泳授業が大学生の泳力に与える効果
    金沢， 翔一， 根本， 想,安田， 純輝， 森山， 進一郎
    育英短期大学研究紀要, 11-17 , 2020
    2020
    Citations: 2
  • 一般女子大学生における背泳ぎの呼吸特性に着目した指導方法の有効性
    金沢翔一， 森山進一郎， 須甲理生， 浅井泰詞， 北川幸夫
    スポーツ教育学研究 38 (2), 35-44 , 2019
    2019
    Citations: 2
  • クロールプル泳における牽引負荷の相違による体幹筋活動の変化
    森山進一郎， 甲斐裕子， 加茂美冬， 湯田淳， 北川幸夫
    日本女子体育大学スポーツトレーニングセンター紀要 15, 9-14 , 2012
    2012
    Citations: 2