Shin-Ichiro Moriyama

@u-gakugei.ac.jp

Department of Health and Sports Sciences
Tokyo Gakugei University

https://researchid.co/shinichiromoriyama0306

RESEARCH, TEACHING, or OTHER INTERESTS

Multidisciplinary, Physiology, Education

Scopus Publications

Scholar Citations

Scholar h-index

Scholar i10-index

Scopus Publications

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, and Futoshi Ogita
Informa UK Limited
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

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, and Daniel A. Marinho
Informa UK Limited
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.

The Impact of Assisted Swimming on Front Crawl Performance
Shin-Ichiro Moriyama, Yasunori Watanabe, Kosuke Masuda, Yugo Toyoda, Jorge E. Morais, Pedro Forte, Henrique P. Neiva, and Daniel A. Marinho
IMR Press

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, and Daniel A. Marinho
Informa UK Limited
ABSTRACT 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.

Effect of Additional Buoyancy Swimsuits on Performance of Competitive Swimmers
Shin-Ichiro Moriyama, Yasunori Watanabe, Tsubasa Kurono, Jorge E. Morais, Daniel A. Marinho, and Kohji Wakayoshi
Bentham Science Publishers Ltd.
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 < 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 < 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, and Jorge E Morais
Informa UK Limited
ABSTRACT 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, T. Tanaka, H. Takahashi, and Y. Hirano
Georg Thieme Verlag KG
Abstract 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 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

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

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

Assisted towing does not affect arm stroke coordination in front-crawl swimming
SI Moriyama, Y Watanabe, Y Toyoda, T Hamamichi, JE Morais, HP Neiva, ...
ISBS Proceedings Archive 42 (1), 664 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

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, 1-12 2023

Determination of harmonic parameters in pathological voices—efficient algorithm
JFT Fernandes, D Freitas, AC Junior, JP Teixeira
Applied Sciences 13 (4), 2333 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

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

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

ラッシュガードの着用はけのび及びクロール泳のパフォーマンスを低下させる
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 73 回 (2023), 609 2023

二重跳びにおける熟練者と未熟練者との跳躍動作の比較習熟度の異なる二重跳び実施者 2 名の事例的検証
大芝健人，濵道健，原英喜，森山進一郎
日本体育・スポーツ・健康学会予稿集第 73 回 (2023), 551 2023

そり牽引走が短距離疾走パフォーマンスに及ぼす即時的効果
濵道健，吉田京平，富沢恭子，森山進一郎
体育測定評価研究, jjtehpe. HPM202303 2023

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

The impact of assisted swimming on front crawl performance
SI Moriyama, Y Watanabe, K Masuda, Y Toyoda, JE Morais, P Forte, ...
Journal of Men's Health 18 (7), 1-7 2022

Web 会議システムを活用した大学体育実技の同期オンライン型授業の実践および課題と展望の検討
志村広子，森山進一郎，久保田浩史，鈴木聡
東京学芸大学紀要. 芸術・スポーツ科学系 73, 211-225 2021

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

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

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, 65-72 2021

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

MOST CITED SCHOLAR PUBLICATIONS

Determination of harmonic parameters in pathological voices—efficient algorithm
JFT Fernandes, D Freitas, AC Junior, JP Teixeira
Applied Sciences 13 (4), 2333 2023
Citations: 12

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
Citations: 11

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
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
Citations: 5

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
Citations: 4

The impact of assisted swimming on front crawl performance
SI Moriyama, Y Watanabe, K Masuda, Y Toyoda, JE Morais, P Forte, ...
Journal of Men's Health 18 (7), 1-7 2022
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
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
Citations: 3

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
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
Citations: 2

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
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
Citations: 2

水泳トレーニング法としてのテザード泳の運動方法学的研究
柴田義晴，北川幸夫，川上哲，米津光治，花木敦，森山進一郎
東京学芸大学紀要. 芸術・スポーツ科学系 61, 105-112 2009
Citations: 2

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, 65-72 2021
Citations: 1

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
Citations: 1

平泳ぎのキック練習における動作と泳動作との関連性
北川幸夫，金沢翔一，森山進一郎
日本女子体育大学紀要 47, 121-124 2017
Citations: 1