WADAZUMI,Tsuyoshi - Faculty of Health and Well-being Department of Health and Well-being

WADAZUMI, Tsuyoshi

Faculty, Department/Institute

Faculty of Health and Well-being Department of Health and Well-being

Academic status (qualification)

Professor Apr. 1,2011

Graduate Degrees・University

Osaka City University Doctor's Degree Program 2000 Completed

Academic Degrees

Mar. 2000 Osaka City University

Research fields	keyword
Physical physiology
Sports science

research topic
Study theme state	Joint research within Japan
research duration
Research Programs
keyword
Research field
Research Topics Overview

research topic
Study theme state	Joint research within Japan
research duration
Research Programs
keyword
Research field
Research Topics Overview

所属学会・団体名	役職名 (役職在任期間)
	20180401(), 20180401()
AMERICAN COLLEGE of SPORTS MEDICINE

Research Publications

No.	Type of publication	Date of publication (Date of presentation)	Title	Type of research result	Jointly authored or single authored	Publisher and journal name	Volume number
1	Papers1	2022/4/23～2022,04,23,,,	Effects of Trehalose Solutions at Different Concentrations on High-Intensity Intermittent Exercise Performance	Other	Co-authored	Nutrients	2022, 14(9), 1776
2	Papers1	2022/3/29～2022/3/292022,03,29,2022,03,29	Carbohydrate Mouth Rinse and Spray Improve Prolonged Exercise Performance in Recreationally Trained Male College Students	Other	Co-authored	Sports	Sports 2022, 10(4), 51
3	Papers1	2021/8～2021,08,00,,,	The effect of carbohydrate mouth rinse in isometric hand grip performance	Academic Journal	Co-authored	Jpn J Phys Fitness Sports Med	70(4): 269-276 (2021)
4	Papers1	2021/4/24～2021,04,24,,,	Single Ingestion of Trehalose Enhances Prolonged Exercise Performance by Effective Use of Glucose and Lipid in Healthy Men	Other	Co-authored
5	Academic presentation7	2017/12～2017,12,00,,,	The effect characteristics of carbohydrate mouth rinse on exercise performance	Academic Journal		The Jouurnal of Physical Fitness and Sports Medicine	Vol.6, 6（461頁）
6	Academic presentation7	2016/12～2016,12,00,,,	Influence of different specification in mouth rinse on exercise performance	Academic Journal		The Jouurnal of Physical Fitness and Sports Medicine	Vol.5, 6（465頁）
7	Academic presentation7	2016/12～2016,12,00,,,	Mechanism of the influence of trehalose ingestion on exercise performance	Academic Journal		The Jouurnal of Physical Fitness and Sports Medicine	Vol.5, 6（467頁）
8	Papers1	2013/12～2013,12,00,,,	Detection of metabolic threshold using near-infrared spectroscopy on the incremental handgrip exercise	Academic Journal		Japanese Jouurnal of Hearth, Fitness and Nurtrition	Vol.18, 1（1-5頁）
9	Papers1	2012/12～2012,12,00,,,	Influence of carbohydrate fluid intake on high-intensity intermittent exercise performance	In-house publication	Co-author	Mukogawa journal of health and exercise science	Vol.3, 1（1-11頁）
10	Papers1	2012/12～2012,12,00,,,	The "IKIGAI" of the elderly women according to household composition	In-house publication	Co-author	Mukogawa journal of health and exercise science	Vol.3, 1（45-52頁）
11	Papers1	2006/10～2006,10,00,,,	Effect of Exercise Intensity on Mild Rhythmic handgrip exercise Induced Functional Sympatholysis	Academic Journal	Co-author	J. Physiol Anthropol	26, pp 593-597
12	Papers1	2006/6～2006,06,00,,,	．Exercise Intensity during a 30-minute Ground Stroke Rally using Short-tennis Racket and Ball: Comparison	Academic Journal	Co-author	J. Educ. Health Sci	Vol.4, 1（1-9頁）

PapersEffects of Trehalose Solutions at Different Concentrations on High-Intensity Intermittent Exercise PerformanceIn refereedOtherCo-authoredNutrients2022, 14(9), 17762022/4/23～Trehalose solution ingested during exercise induces gradual increases in blood glucose levels and the insulin response compared with glucose solution. Trehalose solution aids in the maintenance of performance in the later stages of prolonged exercise. The purpose of this study was to identify the lowest concentration at which the properties of trehalose could be exploited. Groups of 12 healthy men (21.3 ± 1.3 years) and 10 healthy men (21.1 ± 0.7 years) with recreational training were included in experiments 1 and 2, respectively. Both experiments followed the same protocol. After fasting for 12 h, the participants performed a 60 min constant-load exercise at 40% V˙O2 peak using a bicycle ergometer and ingested 500 mL of a trial drink (experiment 1: water, 8% glucose, and 6 or 8% trehalose; experiment 2: 4 or 6% trehalose). They performed four sets of the Wingate test combined with a 30 min constant-load exercise at 40% V˙O2 peak. The experiment was conducted using a randomized cross-over design; trial drink experiments were conducted over intervals of 7 to 12 days. The exercise performance was evaluated based on mean power in the Wingate test. Blood was collected from the fingertip at 12 points during each experiment to measure blood glucose levels. During the high-intensity 5 h intermittent exercise, no differences were found between the groups in exercise performance in the later stages with concentrations of 8, 6, and 4% trehalose solution. The results suggest that trehalose could be useful for making a new type of mixed carbohydrate solution. Further studies to determine the trehalose response of individual athletes during endurance exercise are needed.

PapersCarbohydrate Mouth Rinse and Spray Improve Prolonged Exercise Performance in Recreationally Trained Male College StudentsIn refereedOtherCo-authoredAsako Shirai;Tsuyoshi Wadazumi;Yoko Hirata;Naomi Hamada;Nobuko Honguexercise performanceSportsSports 2022, 10(4), 512022/3/29～2022/3/29https://doi.org/10.3390/sports10040051Mouth rinsing with a carbohydrate (CHO) solution has emerged as a sports nutrition strategy to increase endurance performance. This study aimed to clarify the effects of two forms of CHO sensing in the mouth (i.e., CHO mouth rinse (CMR) and CHO mouth spray (CMS)) on exercise performance during prolonged exercise, including ultra-high intensity intermittent exercise over time. We conducted the following experimental trials: (1) 6% glucose solution (G), (2) 6% CMR, (3) 6% CMS, and (4) water (WAT). These trials were conducted at least 1 week apart in a randomized crossover design. Eight male college students performed constant-load exercise for 60 min (intensity 40% VO2peak), four sets of the Wingate test (three 30 s Wingate tests with a 4 min recovery between each test), and a constant-load exercise for 30 min (intensity 40% VO2peak). The mean exercise power output (Watt), ratings of perceived exertion, and blood glucose levels were measured. We found that the mean power values of the CMR and CMS in the third and fourth sets was significantly higher than that of WAT (p < 0.05), and that the G trial did not show a significant difference from any other trial. Thus, when compared to G or WAT, CMR and CMS can help improve endurance exercise performance.

PapersIn refereedOtherCo-authored;2022/1/1～

PapersThe effect of carbohydrate mouth rinse in isometric hand grip performanceIn refereedAcademic JournalCo-authoredYoko Hirata, Tsuyoshi Wadazumi , Naomi Hamada , Asako Shirai and Hitoshi WatanabeJpn J Phys Fitness Sports Med70(4): 269-276 (2021)2021/8～https://doi.org/10.7600/jspfsm.70.269This study aimed to clarify the effects of carbohydrate mouth rinse on exercise performance. We examined the effect of mouth rinse on fatigability. Thirty healthy male college students completed three trials with non mouth rinse (CON), mouth rinse intervention of 6% glucose (GMR), and artificial sweetener (PLA). Handgrip exercise was performed as a fatigue task. The subjects performed a 10-seconds maximal voluntary contraction (MVC) followed by a 40% MVC rhythmic grasping movement for 14 per minutes, followed by a 4-seconds rest. This set of exercises was performed for a total of ten sets. Mouth rinse was performed from the 5th set to the 10th set. The subjects were divided into three groups: L, M, and S, according to the degree of decrease in MVC due to fatigue in CON. The effect was evaluated using the rate of change in MVC after the mouth rinse. The evaluation was performed for each trail and group. In the L group, mouth rinse significantly improved the rate of change of MVC compared with the other trials (GMR vs. CON: P = 0.002; PLA vs. CON: P = 0.042). A significant trend was observed in the M (GMR vs. CON: P = 0.062), but not in the S. In conclusion, the effects of mouth rinse differed depending on fatigability in isometric hand grip performance, with mouth rinse inhibiting the decrease of motor fatigue. In addition, it was suggested that the sweetness of carbohydrates may have an effect on mouth rinse.

PapersSingle Ingestion of Trehalose Enhances Prolonged Exercise Performance by Effective Use of Glucose and Lipid in Healthy MenIn refereedOtherCo-authoredNaomi Hamada;Tsuyoshi Wadazumi;Yoko Hirata;Mayumi Kuriyama;Kanji Watanabe;Hitoshi Watanabe;Nobuko Hongu;Norie Arai2021/4/24～A single ingestion of trehalose helped to maintain prolonged exercise performance.

PapersIn refereedOtherInternational coauthorshipWADAZUMI,Tsuyoshi2019/4/29～

Academic presentationThe effect characteristics of carbohydrate mouth rinse on exercise performanceAcademic JournalWADAZUMI,TsuyoshiThe Jouurnal of Physical Fitness and Sports MedicineVol.6, 6（461頁）2017/12～

Academic presentationInfluence of different specification in mouth rinse on exercise performanceAcademic JournalWADAZUMI,TsuyoshiThe Jouurnal of Physical Fitness and Sports MedicineVol.5, 6（465頁）2016/12～

Academic presentationMechanism of the influence of trehalose ingestion on exercise performanceAcademic JournalWADAZUMI,TsuyoshiThe Jouurnal of Physical Fitness and Sports MedicineVol.5, 6（467頁）2016/12～

PapersDetection of metabolic threshold using near-infrared spectroscopy on the incremental handgrip exerciseAcademic JournalWADAZUMI,TsuyoshiJapanese Jouurnal of Hearth, Fitness and NurtritionVol.18, 1（1-5頁）2013/12～

PapersInfluence of carbohydrate fluid intake on high-intensity intermittent exercise performanceIn refereedIn-house publicationCo-authorWADAZUMI,TsuyoshiMukogawa journal of health and exercise scienceVol.3, 1（1-11頁）2012/12～

PapersThe "IKIGAI" of the elderly women according to household compositionIn refereedIn-house publicationCo-authorWADAZUMI,TsuyoshiMukogawa journal of health and exercise scienceVol.3, 1（45-52頁）2012/12～

BookUnrefereedMonographSingle-AuthorWadazumi Tsuyoshi2008/7～

PapersEffect of Exercise Intensity on Mild Rhythmic handgrip exercise Induced Functional SympatholysisIn refereedAcademic JournalCo-authorWADAZUMI,TsuyoshiJ. Physiol Anthropol26, pp 593-5972006/10～

Papers．Exercise Intensity during a 30-minute Ground Stroke Rally using Short-tennis Racket and Ball: Comparison In refereedAcademic JournalCo-authorWADAZUMI,TsuyoshiJ. Educ. Health SciVol.4, 1（1-9頁）2006/6～