A5087976260- Sports injuries and prevention
- Bone health and osteoporosis research
- Pregnancy-related medical research
- Body Composition Measurement Techniques
- Cardiovascular Effects of Exercise
- Pelvic and Acetabular Injuries
- Muscle metabolism and nutrition
- Nutritional Studies and Diet
- Occupational Health and Performance
- Eating Disorders and Behaviors
- Obesity, Physical Activity, Diet
- Birth, Development, and Health
- Hernia repair and management
- Knee injuries and reconstruction techniques
- Lower Extremity Biomechanics and Pathologies
- Endometriosis Research and Treatment
- Bone fractures and treatments
- Sleep and Wakefulness Research
- Impact of Technology on Adolescents
- Circadian rhythm and melatonin
- Physiological and biochemical adaptations
- Obsessive-Compulsive Spectrum Disorders
- Pelvic floor disorders treatments
- Sleep and related disorders
- Genetics and Physical Performance
Japan Sport Council
2016-2024
University of Tokyo Hospital
2023-2024
The University of Tokyo
2016-2023
University of Toyama
2016-2020
Background The female athlete triad (Triad), defined by the American College of Sports Medicine as low energy availability (LEA) with or without disordered eating, menstrual dysfunction, and bone mineral density (BMD), is associated stress fractures athletes aged 16‐17 years are most susceptible. Purpose To examine whether Triad increases risk fractures, were assigned to a “teenage” group “20s” group. Methods This prospective study enrolled 390 elite was conducted from 2012 2016 at Japan...
Six years after the first edition of The Guideline for Gynecological Practice, which was jointly edited by Japan Society Obstetrics and Gynecology Association Obstetricians Gynecologists, third revised published in 2017. 2017 Guidelines includes 10 additional clinical questions (CQ), brings total to 95 CQ (12 on infectious disease, 28 oncology benign tumors, 27 endocrinology infertility healthcare women). Currently a consensus has been reached therefore objective this report is present...
Abstract Nine years after the first edition of The Guideline for Gynecological Practice, which was jointly edited by Japan Society Obstetrics and Gynecology Association Obstetricians Gynecologists, 4th Revised Edition published in 2020. 2020 Guidelines includes 4 additional clinical questions (CQ), brings total to 99 CQ (12 on infectious disease, 29 oncology benign tumors, endocrinology infertility healthcare women). Currently, a consensus has been reached Guidelines, therefore, objective...
Abdominal muscles may be both morphologically and functionally affected by pregnancy. Dysfunction of the can lead to persistent postpartum low back pain. The recovery process abdominal following childbirth is not well understood. This study aimed demonstrate changes in thickness contractile function during first six months postpartum. Nine perinatal 15 nulliparous females participated. thicknesses contraction/relaxation ratios rectus abdominis (RA), external oblique (EO), internal (IO),...
Objective: To determine whether secondary amenorrhea during teenage years influences bone mineral density (BMD) in female athletes their 20s. Design: Original research. Setting: Japan Institute of Sports Sciences. Participants: Two hundred ten elite older than 20 were included the study. Main Outcome Measures: Information on participants' past (ie, years) and current menstrual cycle, training time, history stress fractures, blood tests for hormones received was obtained. Bone lumbar spine...
The body mass index (BMI), defined as weight in kilograms divided by height meters squared, has been widely used to assess thinness and obesity all age groups, including children adolescents. However, the validity utility of BMI a reliable measure nutritional health have questioned. This study discusses mathematical conditions that support based on population statistics. Here, we propose condition allometric uni-scaling ensure an objective height-adjusted measure. Any given centile curve,...
Abstract Aim Recent investigations have demonstrated that athletes with high relaxin‐2 levels a risk of anterior cruciate ligament injuries, while taking oral contraceptives (OC) low levels. It has not yet been clarified whether OC reduces The purpose this study was to investigate changes in OC. Methods Levels relaxin‐2, estradiol, progesterone, luteinizing hormone and follicle‐stimulating were measured serum samples ( n = 183) from 106 elite female athletes. Five concentrations > 6 pg/mL...
Background The effects of transdermal estradiol treatment (HT) in amenorrheic athletes (AA) with low body weight (BW) and bone mineral density (BMD) are unknown. Purpose To investigate whether HT increases BMD AA BW to compare the results levels who have recovered spontaneous menstruation (SM). Methods Female (n = 151) were recruited at Japan Institute Sports Sciences University Tokyo. All participants divided into four groups: an group (untreated group) 36), a 55), SM 21), eumenorrheic (EA)...
Abstract The body mass index (BMI), defined as weight in kilograms divided by height meters squared, has been widely used to assess thinness and obesity all age groups, including children adolescents. However, the validity utility of BMI a reliable measure nutritional health have questioned. This study discusses mathematical conditions that support based on population statistics. Here, we propose condition allometric uni-scaling ensure an objective height-adjusted measure. Any given centile...
Background In recent years, the number of athletes who aim to return competition after childbirth has increased. However, few international reports have investigated complications during pregnancy, and changes in physical function many athletes.Objective To conduct a retrospective investigation medical problems postpartum, female childbirth, identify barriers facilitators for their return.Methods A voluntary web-based survey was aimed at former became pregnant with first child gave birth...
Background Although it has been shown that amenorrhea associated with low energy availability or relative deficiency in sport affects body physiology female athletes, the association between menstrual dysfunction during active sports careers and reproductive function after retirement is not clear.Objective To investigate their career post-retirement infertility athletes.Methods A voluntary web-based survey was aimed at former athletes who had become pregnant gave birth to first child...
Abstract Sport plays a major role in maintaining and improving physical function health of women from adolescence to sexual maturity, through menopause old age, it also key social productivity medicine the perspective preventive medicine. However, routine clinical practice, there are many gynecological problems that affect condition performance female athletes due lack appropriate medical intervention, such as neglect amenorrhea menstruation‐related symptoms. In addition, number aiming...
Abstract Aim To examine the effects of administration monophasic oral contraceptive (OC) on body composition and aerobic anaerobic capacities female athletes. Methods Ten athletes (23.0 ± 4.1 years old) participated in this study. All subjects were examined during menstrual cycle (early follicular [EF], middle luteal [ML]) OC (inactive OC, active phases). After measurements, all began taking OC. The tested using a composition, circumferences, lactate curve test, maximal oxygen consumption...
Abstract Background Approximately 10% of female athletes have a history stress fractures, which most commonly occur between the ages 16 and 17 years old. Purpose We investigated whether tartrate‐resistant acid phosphatase 5b (TRACP‐5b), is bone resorption marker, can serve as valid predictor fractures in their teens 20s. Methods Three hundred sixteen elite were recruited 2013 2015. Serum TRACP‐5b various hormones examined blood samples. The serum level was compared with without within 3...
Summary This study investigated the association between underweight and sleep in young females across their menstrual cycles. A lifestyle‐monitoring survey was conducted among 38 female university students aged 18–24 years Japan from January to December 2023. Sleep data 28 participants were analysed. Participants categorized into ( n = 10) control 18) groups based on a baseline body mass index cut‐off of 18.5 kg m −2 . parameters assessed using daily questionnaire, sensor mats, urinary...
To investigate the attitudes and experiences of obstetricians gynecologists in treating women with eating disorders (EDs) Japan.
Various animal and plant species exhibit allometric relationships among their respective traits, wherein one trait undergoes expansion as a power-law function of another due to constraints acting on growth processes. For instance, the acknowledged consensus posits that tree height scales with two-thirds power stem diameter. In context human development, it is posited body weight second height. This prevalent relationship derives its nomenclature from fitting two variables linearly within...
Attainment of optimal bone mineral density (BMD) in female athletes is a very important aspect ensuring their well-being throughout lives, and monitoring BMD essential to avoid fractures bone-related injuries. Several tools for assessing health already exist, but either lack the practicality required continuous or are not suited young athlete demographic. Because this, this study has main objective developing binary classifier discriminate between normal low mass individuals among younger...
Abstract Aims This study aimed to develop a scale screen for eating disorders in female athletes. Methods Preliminary survey : A total of 275 athletes (mean age: 19.4 ± 1.0 years) and 7 diagnosed with 20.1 2.5 were administered screening items prepared based on an existing scale, followed by exploratory factor analysis. Main Six items, relating three factors, extracted, 201 22.3 4.8 6 current or history 18.8 2.9 queried. The diagnostic validity the was then evaluated. Results Questions (α =...
Abstract Hypothalamic amenorrhea leads to a hypoestrogenic state, causing decreased bone mineral density (BMD), while strong impact loading on has been shown increase BMD. The purpose of this study is compare BMD in female athletes based menstrual status and their sports/events by characteristics. at the lumbar spine was measured dual-energy X-ray absorptiometry hormone level. subjects were classified into four groups levels compared among groups, which divided amenorrheic (AAs) eumenorrheic...
BACKGROUND: The diagnosis and treatment of relative energy deficiency in sport (RED-S) are challenging owing to variations symptoms the absence specific guidelines. This study aimed investigate differences follow-up RED-S, its consequences, related factors among sports medicine physicians with different backgrounds Japan USA examine between two countries.METHODS: An anonymous survey regarding processes RED-S was distributed via email. Respondents included 58 from 241 Japan.RESULTS: findings...
Pregnancy-related lumbopelvic pain is a common musculoskeletal problem, and postural changes are believed to be involved in these disorders. However, the alignment postpartum women remain unclear. This study aimed determine whether there following vaginal or cesarean delivery when occur after delivery. Thirty females (PP group) 20 nulliparous female controls (CTL underwent anteroposterior, lateral pelvic, lower-back X-ray static upright position. Digital radiographic images were analyzed...