Dai Sugimoto

Background Readiness for return to sports involves both physical and psychological aspects of recovery; however, the relationship between psychological and physical variables after anterior cruciate ligament (ACL) reconstruction (ACLR) is poorly understood. Hypothesis ACLR patients with a higher psychological readiness would demonstrate better fun...

Background Sport specialization is associated with increased risk of overuse injuries. However, the effects of sport specialization on the risk of overuse injury may differ by specific sport and sociocultural parameters. This study aimed to determine the associations of sport participation and training volume with previous overuse injuries in Japan...

OBJECTIVE: To compare quality of life (QoL) between specialized and non-specialized young female dancers. METHODS: A cross-sectional survey design was used. Young female dancers between the ages of 8–17 years completed the validated pediatric QoL inventory (PedsQL 4.0) and answered the following sport specialization questions: 1) Do you solely perf...

Aim: To investigate quality of life (QoL) measures in a cohort of young female dancers. Methods: Cross-sectional survey study design was utilized to study dancers 8 to 17 years enrolled in two elite dance schools in the Boston area. The main outcome measure was the Pediatric Quality of Life (PedsQL 4.0) questionnaire, a validated QoL survey for chi...

Objective To determine risk factors for second anterior cruciate ligament (ACL) injury following primary ACL reconstruction (ACLR) using return-to-sport (RTS) tests consisting of qualitative and quantitative measures in young athletes. Methods A case–control study design was used, and a retrospective review of adolescent athletes after primary ACL...

The concept of youth sport specialization has evolved over the past decade, from a focus on the risk of overuse injury to a broader awareness of its effects on mental health, social well-being, quality of life, growth and maturation, sport performance, and long-term athletic success. This review article considers a recently revised definition of yo...

Introduction Adolescent athletes involved in sports that involve cutting and landing maneuvers have an increased risk of anterior cruciate ligament (ACL) tears, highlighting the importance of identifying risky movement patterns such as dynamic knee valgus (DKV). Qualitative movement screenings have explored two-dimensional (2D) scoring criteria for...

Purpose To examine age- and sex-related differences in postoperative functional outcomes at approximately 6 months after anterior cruciate ligament reconstruction (ACLR). Methods In this study, patients who underwent primary ACLR performed a series of return-to-sport functional tests at 5 to 8 months after surgery. Functional tests included streng...

This study compared lower extremity (LE) muscular strength by 3 groups of female athletes using chronological age and consideration of age of peak height velocity (PHV). Isometric quadriceps, hamstrings, and hip abductors strength were assessed from physically active, pediatric females. The body mass normalized isometric strength (N m/kg) was compa...

Background Quadriceps tendon soft tissue autograft represents an increasingly popular graft option for anterior cruciate ligament reconstruction (ACLR), particularly for adolescents, some of whom have an open physis, precluding use of graft options with bone plugs. Purpose/Hypothesis The purpose of this study was to quantify return-to-sport perfor...

Objectives To investigate the association of reported legal performance enhancing substance (PES) use and consideration of banned PES use among sport-specialised and non-sport-specialised young athletes. Methods and design Cross-sectional study of 1049 young athletes enrolled in an injury prevention programme from 2013 to 2020. We used logistic re...

This study aimed to examine physical therapists’ perspectives in conservative treatments of pediatric patients with adolescent idiopathic scoliosis (AIS). A cross-sectional survey design was used. A validated questionnaire was distributed to physical therapists, and the responses were analyzed. Preferred treatment frequency was 60 minutes (53.8%),...

Background The prevalence of wrist pain among gymnasts ranges from 46% to 79%. To alleviate wrist pain, gymnasts wear wrist guards/supports (WG/S). Purpose To investigate the effect of WG/S on the wrist joint through joint moment, angles, total joint range of motion (ROM) arc, and ground-reaction force (GRF). Study Design Controlled laboratory st...

Introduction: Chronic groin pain is prevalent in Australian football and soccer in male athletes. Therefore, various therapeutic exercises have been implemented in the rehabilitation. However, key aspects of effective therapeutic exercises that lead to early return-to-play (RTP) have not been well understood. Therefore, the purpose of the syste...

Background The Expanded Cutting Alignment Scoring Tool (E-CAST) has been previously shown to be reliable when assessing lower extremity alignment during a 45-degree sidestep cut, however, the validity of this tool remains unknown. The purpose of this study was to assess the concurrent validity of the E-CAST by comparing visually identified movement...

Objectives: Youth soccer participation, particularly among females, continues to grow worldwide. With the high incidence of sport-related concussion (SRC) in soccer, it is important to investigate if SRC occurs disproportionally by positions. Our hypothesis was to see no positional differences of SRCs, SRC-related characteristics, and outcomes amo...

Background: Fundamental movement skills (FMS) are critical components to lifelong participation in sports and physical activity. With the rise in early sports specialization, mastery of motor skills may be limited in youth athletes. The purpose of this study was to assess FMS proficiency in highly active middle school athletes and determine whethe...

Background Successful return to sport after anterior cruciate ligament (ACL) reconstruction (ACLR) can be affected by a patient’s physical and psychological state throughout the rehabilitation process. Purpose To prospectively compare differences in patients at 6 months after primary ACLR with the ACL–Return to Sport after Injury (ACL-RSI), Intern...

Background and Purpose The Expanded Cutting Alignment Scoring Tool (E-CAST) is a two-dimensional qualitative scoring system that has demonstrated moderate inter-rater and good intra-rater reliability for the assessment of trunk and lower extremity alignment during a 45-degree sidestep cut. The primary purpose of this study was to examine the reliab...

There is limited literature analyzing pediatric hurdle injuries based on sex and age. This study compares hurdle-related injury types, injured body parts, and injury mechanisms by age and sex in pediatrics. Hurdle-related injury data from the National Electronic Injury Surveillance System were used to retrospectively review the injuries of hurdlers...

Objective: The aim in this study was to quantify the number, nature, and severity of injuries sustained by male and female high school students who took part in a running training program that culminated in the completion of a half or full marathon. Design: This study is a retrospective clinical audit. Methods: Injury reports from high school...

The purpose was to evaluate selected physical tests in children and to compare the outcomes by sex. A cross-sectional study design was used to evaluate children 6–11 years who completed five physical tests: hand grip, vertical jump, sit and reach, Y-balance, and obstacle course (time and score). The outcome measures including test results were desc...

Background Barriers and facilitators to research in sports medicine (SM) by physicians and allied health (AH) professions such as physical therapists and athletic trainers are understudied. The purpose of this research was to examine and compare research barriers, facilitators, and other research related facets including interests, comfort, knowled...

It is estimated that approximately 2.5 million sports-related knee injuries occur in the pediatric population annually in the United States. Thus, identifying appropriate screening tools and injury prevention strategies is imperative. To develop successful injury prevention strategies, risk factor identification is the first step. There are two typ...

Objectives: The purpose of this study is to describe the incidence and characteristics of injuries at the 2019 Rink Hockey World Championship. Methods: A cross-sectional study was performed among rink hockey athletes from three National Teams (Argentina, Portugal and Spain). All injuries were reported by the medical staff of each National Team d...

Background Hurdling is a track event that is unique due to a combination of running and jumping over an apparatus. Since hurdling requires a special skillset with sprinting and jumping, athletes are at risk for various musculoskeletal injuries. However, there has been a paucity of studies describing the epidemiology of pediatric hurdle injuries. P...

Background: Physical illiteracy is often referred as a lack of movement competence and is a serious concern, especially among children. Physical tests to evaluate physical literacy are understudied, especially potential sex effects. To evaluate selected tests of physical literacy in children and to compare the outcomes by sex. Methods: A cross-sect...

In order to examine the role of orthopedics in child development, longitudinal study designs are necessary [...]

The aim of this study was to determine and analyze the differences between the players’ internal (IL) and external load (EL) in different time zones (T1: 0–45 min, T2: 45–70 min, T3: 0–70 min, T4: 70–90 min, T5: 45–90 min, and T6: 0–90 min) in elite youth soccer matches (U17–19 age category). The monitored group comprised elite youth soccer players...

To investigate the domains of physical activity in children with cerebral palsy (CP) and to compare these findings to typically developed (TD) children. Methods: A cross-sectional study design. Responses of the four domains in Play Lifestyle and Activity in Youth (PLAY) questionnaire were descriptively analyzed and compared between children with CP...

Anterior cruciate ligament (ACL) injuries in female adolescent athletes occur at disproportionately high levels compared to their male counterparts. However, limited prospective data exist on the validity of low-cost screening tools that can proactively identify ACL injury risk, specifically for female athletes. The purpose of this study was to ass...

Objective: To compare the common injuries of pre-high school American football quarterbacks (Pre-HS QBs) and high school American football quarterbacks (HS QBs) within the last 15 years. Methods: A retrospective chart review was performed at a sports medicine clinic at a tertiary-level pediatric medical center. Pediatric and adolescent American...

Background Up to 70% of all anterior cruciate ligament (ACL) injuries occur via a non-contact mechanism involving deceleration and direction change on a planted foot. Clinical screening tools analyzing movement patterns during a cutting task are reliable and valid. The Expanded Cutting Alignment Scoring Tool (E-CAST) is a reliable tool to qualitati...

Background Track & field has more combined participants compared to any other high school sport in the United States. Hurdling is a track event that is unique due to a combination of running and jumping over an apparatus. As a result, this puts athletes at risk for various musculoskeletal injuries. However, there has been a paucity of studies descr...

Background Track & field has more participants compared to any other high school sport and continues to gain popularity among middle school aged kids. Among many events, hurdles is unique because there is continued running with repeated jumping over an apparatus. Although serious injury has been anecdotally reported, there are few studies describin...

Background: Current clinical screening tools assessing risky movements during cutting maneuvers do not adequately address sagittal plane foot and ankle evaluations. The Cutting Alignment Scoring Tool (CAST) is reliable in evaluating frontal plane trunk and lower extremity alignment during a 45-degree side-step cut. The Expanded Cutting Alignment S...

[Purpose] To identify running gait biomechanics associated with sacroiliac (SI) joint pain in female runners compared to healthy controls. [Participants and Methods] In this case-control study, treadmill running gait biomechanics of female runners diagnosed SI joint pain, (by ultrasound-guided diagnostic SI joint injection and/or ≥2 positive SI phy...

Introduction: The identified domains of child physical literacy include knowledge/understanding, behavior, motivation/confidence, physical competency. Understanding physical literacy is critical to moving forward intervention efforts surrounding physical inactivity. Objectives: To investigate physical literacy domains by presenting responses to the...

Background Apophyseal injuries are common in children and adolescent athletes. These injuries are believed to be caused by repetitive overloading, which can create inflammatory and degenerative conditions in growing bone prominences. However, their prevalence, diagnosis, and treatment in young soccer players have been understudied. Purpose To eval...

Purpose: To describe fundamental movement skill (FMS) practice patterns in the elementary physical education (PE) curriculum. Methods: A cross-sectional survey was sent to PE teachers of grades 1 through 6. Sixty-eight responses were included for analysis. Results: Only 38.2% of teachers taught all 12 FMS components. Compared with PE teachers...

Background: Improper pitching mechanics are a risk factor for arm injuries. While 3-dimensional (3D) motion analysis remains the gold standard for evaluation, most pitchers and clinicians do not have access to this costly technology. Recent advances in 2-dimensional (2D) video technology provide acceptable resolution for clinical analysis. However...

Objective To compare femoroacetabular (FA) translation between dancers and athletes with hip pain and between dancers with and without hip pain. Methods In this cross-sectional study, 171 female athletes and dancers with hip pain underwent dynamic hip ultrasound (DHUS) of FA translation in three positions: neutral (N), neutral with contralateral h...

Background The effect of concomitant meniscal tears, and their associated treatment, on strength and functional recovery after anterior cruciate ligament reconstruction (ACLR) has not been adequately investigated in young populations. Hypothesis Concomitant meniscal tears, treated with or without repair, would not adversely affect strength, balanc...

Background Differences in postoperative recovery after anterior cruciate ligament reconstruction (ACLR) between men and women have been demonstrated in the adult population. Sex-based differences have been incompletely investigated in adolescents, which represent the subpopulation most affected by ACL injury. Purpose/Hypothesis The purpose of this...

Objectives Young patients are the highest risk demographic for ACL graft failure and revision surgery. Previous studies have shown higher rates of graft failure with the use of allograft tissue for ACL reconstruction (ACLR) in both primary and revision surgeries. However, questions remain regarding the functional consequence of harvesting a second...

Purpose To investigate the quantity and quality of sleep hours in young athletes in a professional football club, to study if there is a significant relationship with mood state and subjective well-being, and to identify the relationship between sleep and quarterly academic performance. We also explored the relationship between sleep and quarterly...

Objective: (1) To examine the effect of social media (SM) use on sleep quality and (2) to determine the effect of SM on competition performance among college athletes. Design: Cross-sectional study. Setting: Two local Division III colleges, MA, USA. Participants: National Collegiate Athletic Association Division III swim and track and field...

Objective (1) To examine the effect of social media (SM) use on sleep quality and (2) to determine the effect of SM on competition performance among college athletes. Design Cross-sectional study. Setting Two local Division III colleges, MA, USA. Participants National Collegiate Athletic Association Division III swim and track and field athletes...

Background Young patients are the highest risk demographic for ACL graft failure and revision surgery. Previous studies have shown higher rates of graft failure with the use of allograft tissue for ACL reconstruction (ACLR) in both primary and revision surgeries. However, questions remain regarding the functional consequence of taking a second auto...

Background Social media (SM) use among young adults has increased significantly in recent years and has been linked to poor sleep quality. College athletes pose a unique risk for poor sleep given their many demands. Currently, limited research is available on the impact of SM use on sleep quality, or the competition performance of college athletes....

Background Few studies have demonstrated the benefit of physical therapy in the treatment of adolescent idiopathic scoliosis (AIS), alone or in conjunction with bracing or surgery. To our knowledge, there is no consensus in pediatric physical therapists who treat AIS patients. Purpose To identify the optimal physical therapy practices for AIS incl...

Background.: Strategies to reduce anxiety prior to injection procedures are not well understood. The purpose is to determine the effect of a meditation monologue intervention delivered via phone/mobile application on pre-injection anxiety levels among patients undergoing a clinical injection. The following hypothesis was tested: patients who liste...

Background: Three-dimensional (3D) motion analysis is considered the gold standard for evaluating human movement. However, its clinical utility is limited due to cost, operating expertise, and lengthy data processing time. Numerous qualitative scoring systems have been introduced to assess trunk and lower extremity biomechanics during functional t...

This case series reports the outcome of posterior ankle decompression and os trigonum or Stieda process resection utilizing an open posterolateral approach in 54 professional, pre-professional, and dedicated recreational dancers. All procedures were performed by a single surgeon at the same facility between 2008 and 2018. The surgical technique is...

Objective: To investigate clinical diagnoses, sports participation, and return to sport timeline associated with hallux sesamoid injuries with sex comparisons. Design: Descriptive epidemiology study. Setting: Sports medicine clinics at a tertiary-level pediatric medical center. Patients: Six hundred eighty-three young athletes (546 women and...

The purpose of this study was to investigate the effect of age on peak torque (PT) relative strength measures of knee extensors (KE) and knee flexors (KF), bilateral strength ratio (Q:Q, H:H), and ipsilateral strength ratio (H:Q) in youth elite male football players.Elite male players (n = 70) from four age categories (U16: n = 20, U17: n = 20, U19...

Objective Juvenile-onset fibromyalgia (JFM) is a chronic debilitating pain condition that negatively impacts physical, social and academic functioning. Cognitive-behavioral therapy (CBT) is beneficial in reducing functional disability among adolescents with JFM but has only a modest impact on pain reduction and does not improve physical exercise pa...

Background There is a lack of research on the effects of a postoperative rehabilitation program on anterior cruciate ligament (ACL) graft rupture. Hypothesis We hypothesized that a hip-focused rehabilitation protocol with graft rupture education and avoidance training (HIP-GREAT program) would demonstrate lower ACL graft rupture rates compared wit...

Objective: 1) to determine the proportion of sport specialization among female figure skaters, 2) to compare proportion of low back injuries between specialized female figure skaters and non-specialized female figure skaters, and 3) to identify an independent risk factor(s) for low back injuries in female figure skaters. Methods: A cross-sectional...

Basketball is known as a team sport with high injury rates, with reports of up to eight injuries per 1000 h of exposure. An increase in injury incidence rates was observed in a recent study, and tight and condensed schedules were considered as one of the contributing factors. Traditionally, ankle sprain is described as the most common injury in bas...

Femoroacetabular impingement (FAI) is a common anatomical variant in ballet dancers. Cam morphology (a subtype of FAI) and increased alpha angles have been identified as risk factors for hip pain. Ultrasound has recently been used to measure alpha angles in the diagnosis of cam morphology, but its utility remains understudied. The purpose of this s...

Objectives The subject of sex-based differences in postoperative recovery after anterior cruciate ligament reconstruction (ACLR) between males and females has been incompletely investigated, with no published comparative analyses specifically in adolescents, which represents the sub-population most affected by ACL injury. The purpose of this study...

Objectives Successful return-to-sport (RTS) following anterior cruciate ligament (ACL) reconstruction can be affected by several variables, including a patient’s physical and psychological states throughout the rehabilitation process. Several studies have reported patients with increased fear-of-reinjury may be at risk for secondary injury followin...

Background The physeal-sparing iliotibial band (ITB) anterior cruciate ligament (ACL) reconstruction (ACLR) is a well-established technique for treating skeletally immature patients with ACL rupture. However, the long-term implications of the procedure on the intricacies of kinetic and kinematic function of the knee have not been comprehensively in...

Purpose. To find risk factors for soccer-related musculoskeletal injuries among elite, adolescent male soccer players. Methods. Prior to the season, various physical, clinical, and functional measurements were taken. One season was used as an injury surveillance period. Then, after the season, measures of potential risk factors were compared betwee...

Objective To examine the proportion of skeletally immature anterior cruciate ligament reconstructed (ACLR) patients who achieve ≥90% of lower extremity recovery at 6–9 months post-operatively. Design Cross-sectional study. Setting Biomechanical laboratory. Participants Skeletally immature ACLR patients. Main outcome measure(s) Muscular strength...

INTRO: To determine clinical parameters that are related to abnormal cardiac symptoms in physically active youth. METHODS: We used the Simon’s Heart Heartbytes National Youth Cardiac Registry to collect data from adolescent athletes in southeastern Pennsylvania. We collected age, race/ethnicity, abnormal cardiac symptoms, medical history, medicatio...

Background The subject of sex-based differences in postoperative recovery after anterior cruciate ligament reconstruction (ACLR) between males and females has been incompletely investigated, with no published comparative analyses specifically in adolescent sub-populations, which represent those most affected by ACL injury. Purpose/Hypothesis To co...

Background Successful return-to-sport (RTS) following anterior cruciate ligament (ACL) reconstruction can be affected by several variables, including a patient’s physical and psychological state throughout the rehabilitation process. Several studies have reported patients with increased fear-of-reinjury may be at risk for secondary injury following...

BACKGROUND Understanding the association between sport specialization in young athletes and injury continues to be an important goal of sports medicine specialists. However, studies focused on females were scarce. Additionally, studies dedicated to sport specialization in the performing artistic athletes, including figure skaters are deficient at t...

Background Quadriceps tendon autograft represents an increasingly popular graft option for ACL reconstruction (ACLR). However, there is a paucity of literature regarding the early post-operative effects of this graft technique on functional recovery, particularly in adolescents. Purpose/Hypothesis To quantify post-operative strength, dynamic balan...

BACKGROUND Hip pain is a common complaint in athletes of all ages. Hip pathology includes both intra- and peri-articular pain generators. Ultrasound (US) evaluation and guided injections are used in the clinical setting for diagnostic and therapeutic purposes. However, evidence regarding the impact of US-guided injections on quality of life (QoL) h...

Background Pediatric physical inactivity is a major public health concern. According to the 2017 State of Play report, only 24% of youth meet the recommended physical activity (PA) dosage. Previous studies identified fundamental movement skill (FMS) proficiency as a predictor of physical literacy and PA. Mastery of FMS requires direct instruction a...

Background Three dimensional (3D) motion analysis is considered the “gold standard” for evaluating human movements. However, its clinical utility is limited due to cost, operating expertise and lengthy post-processing time. Numerous qualitative scoring systems, using videos, have been introduced to assess trunk and lower extremity (LE) alignment in...

Objectives: To describe common injuries of youth American football quarterbacks (QBs) cared for in a regional sports medicine center within the last 15 years. Methods: A retrospective chart review of all male youth American football QB patients who sustained sports-related injuries at a regional pediatric medical center between 01/01/2003 – 10/01/2...

Objective: To investigate CrossFit-related injuries presenting to a pediatric sports medicine clinic. Design: Retrospective review of pediatric CrossFit-related injuries from between January 1, 2003, and June 31, 2016. Setting: Pediatric sports medicine clinic at a tertiary-level academic medical center. Patients: Patients with injury relate...

The authors wish to make the following correction to this paper [...].

Background: The functional elbow range of motion in children and adolescents has not been previously reported. In adults, a functional motion arc of 30 to 130 degrees of elbow flexion and 50 degrees of pronation to 50 degrees of supination is well established. Contemporary tasks such as cellular phone use and keyboarding require greater elbow flex...

Objective: To examine CrossFit-related injuries based on sex and age. Design: Retrospective case series. Setting: A tertiary-level pediatric sports medicine clinic. Participants: CrossFit athletes. Main outcome measures: CrossFit-related injuries by sex (males vs females) and age groups (≤19 years vs >19 years) using a χ analysis with P =...