Provision of online information and resources for resistance training in Australian youth sports : A scoping review

This is a self-archived version of an original article. This version may differ from the original in pagination and typographic details. Author(s): Title: Year: Version: Copyright: Rights: Rights url: Please cite the original version: CC BY-NC 4.0 https://creativecommons.org/licenses/by-nc/4.0/ Provision of online information and resources for resistance training in Australian youth sports : A scoping review © The Author(s) 2024 Published version Kennedy, SG; Murray, SJ; Guagliano, JM; Lloyd, RS; Lubans, DR; Smith, JJ; Eather, N; Bennie, A Kennedy, S., Murray, S., Guagliano, J., Lloyd, R., Lubans, D., Smith, J., Eather, N., & Bennie, A. (2024). Provision of online information and resources for resistance training in Australian youth sports : A scoping review. International Journal of Sports Science and Coaching, Early online. https://doi.org/10.1177/17479541241295289 2024 Provision of online information and resources for resistance training in Australian youth sports: A scoping review SG Kennedy 1,2,3 , SJ Murray 1 , JM Guagliano 1,2 , RS Lloyd 4,5,6 , DR Lubans 3,7,8,9 , JJ Smith 3,7,8 , N Eather 3,7,8 , and A Bennie 1 Abstract Objectives: This study aimed to identify and synthesize online information/resources related to resistance training provided by governing bodies of the ten most popular youth sports in Australia. Design: A scoping review. Methods: The top 10 organised out-of-school sports were eligible for the review. A systematic search of national sporting organisation and associated websites was conducted, using key search terms. Data were extracted regarding information and/or resources aligning with current international youth muscle-and-bone strengthening activity guidelines (i.e., 5–17 years, three days per week). Results: For all ten sports, information/resources on resistance training were provided for athletes or coaches, however the type of information and level of detail varied. There was lack of consistency between guidelines and information provided by sports. Age of commencement recommendations ranged from four years (athletics) to 14 years (Australian football), whilst others suggested resistance training for all ages (gymnastics) or did not provide an explicit age range (tennis and cricket). Regarding frequency, few sports organisations provided a recommendation for how many days per week resistance training should be performed. Some sports alluded to the need for youth to develop muscular fitness to enhance fitness and performance, whilst others focused primarily on the need for resistance training as an injury prevention tool. Conclusions: Our findings highlight the gap that exists in the provision of information in relation to resistance training in Australian sports. It is important that national sporting organisations look to educate athletes and coaches (and parents) from grassroots levels on the need for muscular fitness. Keywords Adolescents, children, fitness, muscle strength, physical activity Introduction Regular participation in physical activity is associated with improved physical, psychological, social and cognitive health. 1–3 Beyond these benefits, evidence suggests that physical activity participation during childhood and adolescence 4 may track into adulthood 5 to support lifelong health. Reviewers: Avery Faigenbaum (The College of New Jersey, USA) Dylan Hicks (Flinders University, Australia) Stephen McQuilliam (Liverpool John Moores University, UK) 1 School of Health Sciences, Western Sydney University, Darug Country, New South Wales, Australia 2 Translational Health Research Institute, Western Sydney University, Dharawal Country, New South Wales, Australia 3 School of Education, University of Newcastle, Callaghan, New South Wales, Australia 4 Centre for Applied Sport Science & Medicine, Cardiff School of Sport & Health Sciences, Cardiff Metropolitan University, Cardiff, Wales, UK 5 Sports Performance Research Institute New Zealand (SPRINZ), AUT University, Auckland, New Zealand 6 Centre for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, New Zealand 7 Centre for Active Living and Learning, College of Human and Social Futures, University of Newcastle, Callaghan, New South Wales, Australia 8 Hunter Medical Research Institute, Newcastle, New South Wales, Australia 9 Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland Corresponding author: Sarah G Kennedy, School of Health Sciences, Western Sydney University, Darug Country, New South Wales, Australia; Translational Health Research Institute, Western Sydney University, Dharawal Country, New South Wales, Australia; School of Education, University of Newcastle, Callaghan, New South Wales, Australia. Email: [email protected] Review International Journal of Sports Science & Coaching 1–13 © The Author(s) 2024 Article reuse guidelines: sagepub.com/journals-permissions DOI: 10.1177/17479541241295289 journals.sagepub.com/home/spo International physical activity guidelines 6 recommend 5– 17-year-olds participate in an average of 60 min of (mostly aerobic) moderate-to-vigorous intensity activity (MVPA) daily and muscleand bone-strengthening activity (MSA) on at least three days per week. The MSA guideline was introduced in response to the growing body of evidence supporting the importance of muscular fitness (i.e., muscular strength, muscular endurance, and/or muscular power) for a range of child and adolescent health outcomes. 7 Resistance training (RT) is one form of MSA that can be completed using a range of resistance loads, such as the body, free, and machine weights, as well as elastic bands. Building on the inclusion of MSA in the physical activity guidelines, support for youth participation in RT has been shown at an international 7 and national (i.e., Australia) 8 level. The international consensus statement, penned by leading world experts in pediatric exercise science, paediatric medicine, physical education, strength and conditioning and sports medicine, highlights the benefit of appropriately designed RT programs for children from five years of age. 7 At the national level, the Australian Strength and Conditioning Association provides program design and progression information for athletes from six years of age. 8 It is clear that RT is an important exercise consideration for youth. Specifically, RT has been shown to contribute to unique improvements in muscular fitness 9 and bone health, 10–12 while also bolstering physical (cardiovascular disease and diabetes), 9 psychological (e.g., self-esteem) 12 and cognitive health. 13 In addition, young people who participate in RT typically have a reduced risk of sports-related injury 14 and can enhance sports performance. 15 However, enhanced efforts are needed to reduce the risk of sportsrelated injuries, 16 to ease the burden on emergency rooms and reduce the time out of sport during recovery and rehabilitation. Therefore, the focus on developing strength is critical to prepare youth for the athletic demands of sport 17,18 and build the foundations for a physically active life. 19 Physical literacy is the motivation, confidence, physical competence, understanding and knowledge to maintain physical activity at an individually appropriate level, throughout life. 20 The evolution of these individual characteristics has the potential to increase a young person’s enjoyment of physical activity. 21,22 Approximately one in eight young Australians (aged 15– 17 years) participate in the recommended three days per week of MSA. 23 When considering rates of participation in other global regions, this is slightly less than the 19% reported for European adolescents, 24 and considerably lower than the 51% of United States (US) high school students. 25 Although there is a lack research examining this issue, there are a range of factors may explain the low levels of MSA observed among Australian youth. These may include lack of facilities in government schools, lack of training among teachers, and lack of knowledge among parents. Additionally, youth may lack knowledge, skills and/or confidence (i.e., physical literacy), 26 have limited access to equipment or space to perform RT, and fears around common misconceptions that RT is unsafe and can stunt growth. 27 Despite extensive evidence to the contrary, 27–30 these common misconceptions surrounding the safety, efficacy, and necessity of RT for young people exist. 27 Unfortunately, these beliefs are often held by those with influence over youth, such as parents, sport coaches, and teachers, 31 and may lead them to regard RT as unsuitable for youth. 32 This may be particularly true in Australia when compared to higher rates of participation in the US, given the structural differences in our schooling systems and infrastructure and funding within various sporting codes (including access to professional coaching). Attitudinal changes are necessary, leading to greater acceptance of RT as a safe and effective form of physical activity for young people. 29 Efforts have been made to improve RT behaviour in Australian schools, 28,33–35 with further opportunity to encourage parents and coaches about the benefits of RT for youth via sport. As such, it is imperative that parents and coaches are provided with adequate and accurate information and resources to guide the safe and effective promotion of RT participation in youth. 36 Childhood is the optimal time for young people to develop the movement skills required for participation in physical activities across the lifespan, 37,38 and to facilitate lifelong physical activity. 39 A young person with a diversified skill set, including foundational movement skills (i.e., jumping, dodging, push-ups, squats), 40 will be better equipped to participate in physical activity into the future. Without proficiency in these RT specific skills, a young person may find it difficult to participate in structured RT –limiting their ability to benefit from the unique physical, 9 psychological 12 and cognitive 13 health improvements. Organised sport is a popular type of physical activity that presents an ideal opportunity for developing these foundational skills as well as motor competence and confidence in youth participants. 41 Indeed, organised sport is the widest reaching out-of-school setting for youth to be physically active, 42 with 49–66% of young people in Australia participating each week. 43,44 However, trends indicate that approximately half of young people discontinue sport in the adolescent (i.e., 13–14) years. 45 In Australia, almost half of community sports participants (spanning ages 4–29 years) drop out within three years. 46 This presents an additional urgency for the development of the aforementioned diverse skillsets prior to age of dropout. Organised sport is also an environment in which influential adults, such as coaches, 31 officials (i.e., administrators, referees), and parents (who may be all the above) are involved in the planning, design, and implementation of physical activity opportunities for youth. Additionally, sporting organisations are a trusted source of information, influencing the knowledge and understanding of these adults involved in youth sport. In Australia, the sport 2International Journal of Sports Science & Coaching 0(0) sector is structured based on a federal system of governance, which provides funding, policy direction, and regulatory frameworks through agencies such as Sport Australia. Connected to Sport Australia are National Sporting Organisations (NSOs) who oversee sports administration, development, and competitions within their jurisdictions. These organisations are governed by diverse leadership teams, with representatives from areas such as business, finance, law, and sport, and work closely with local clubs and associations to operationalise sport from community participation to high-performance levels. These NSOs set standards, pathways, and guidelines for areas such as safety, ethics, tactics, technique, injury prevention and coaching specific to that sport. Recently, Australian sport policy has recognised the evolving sporting landscape and must continue to do so to meet the meet the population’s needs. 47 Given the links between RT and a range of positive health-related outcomes, injury risk reduction, and sporting performance, sport may serve as an appropriate means for practitioners and their respective NSOs to promote RT to young populations. Given their wide reach, sporting organisations may aid in the promotion of national physical activity recommendations (including those pertaining to MSA [such as RT]) through their communication channels and resources. However, there has been no evidence synthesis of the current information or available resources provided by Australian NSOs to parents, coaches, and athletes on RT to date. As such, the aim of this study was to conduct a scoping review to: (i) explore and synthesise RT information and resources currently provided by NSO’s for the ten most popular sports in Australia by participation amongst children, and (ii) determine the alignment of RT information and resources with age and frequency recommendations as per current international youth MSA guidelines (i.e., 5–17 years, three days per week). 6 Methods We determined that a scoping review was the most appropriate methodology for this study, to allow for an overview of the evidence (i.e., information and resources, including programs) provided by NSOs related to RT. A scoping review allows for the identification and mapping of information, as well as the exploration of the types of evidence in a given field. 48 The Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) 49 were applied to ensure adequate reporting standards. Eligibility criteria Using published data in the 2022–2023 AUSPLAY report, 43 the top 10 out-of-school sport and sport-related activities for children aged 0–14 years were included in the review. The age range of 0–14 was chosen, as this includes youth in our target age range (i.e., 5–17). In the Australian context, data for 15–17-year-olds are combined with that of adults, making it impossible to determine the most popular sports for older adolescents from those for adults broadly. The top 10 sports were chosen for inclusion based on the available data in the AUSPLAY report. These sports included swimming (1), football (soccer, 2), gymnastics (3), Australian football (4), basketball (5), netball (6), tennis (7), athletics (8), cricket (9), and rugby league (10). Beyond the top 10 sports (i.e., top 20), data for children and adults is combined. Additionally, these top 10 sports are a diverse range of individual and team sports played across a range of field/court environments. These sports were a likely representative sample of the range of sports participated in by Australians. Information sources and search strategy For our search, we used two methods that included: (i) sporting organisation websites and (ii) a Google keyword search. The Australian sports directory was used to find the NSO for each of the top 10 youth sports. The website of each NSO was searched for publicly available information and resources (including specific programs) related to RT for youth. This included information and/or resources related to strength training, weight training, and/or resistance training, as well as muscular fitness for youth participating in the specific sport. This was done through searching all webpages within the NSO website as well as any secondary websites associated with the NSO. These secondary websites include those with a focus on community level participation and/or increasing player numbers, outside of the national level competitions (which were often the focus of the main NSO website). Within the webpages within each website, one reviewer (SM) searched for educational, parent, coach and/or training information or resources that included information related to RT. This search was checked for accuracy and consistency by a second reviewer (SK). If available, the website search bar was also utilised to search the keywords: Strength training; Resistance training; Muscular strength; Muscular fitness. After each NSO website was searched, an additional search was performed on Google, using the string “Strength training OR Resistance training OR Muscular strength OR Muscular fitness AND ‘Name of Sport’ AND Youth AND Australia”. This was conducted to capture any additional external information offered by the organisations that may not have been linked to their website. Data charting process Data charting was performed by one reviewer (SM) and checked for accuracy by a second reviewer (SK). Kennedy et al. 3 Table 1. National sporting organisation RT information/resources. Rank +Sport Muscle-strengthening activity recommendations by National Sporting Organisation 1. Swimming NSO Website Non-Elite Foundation 3 Age: 11+years old. Information: Mention of strength as a physiological attribute Additional internet search Swim Land Program Goal: Strength development is important for both performance and injury prevention. The primary focus of any strength and conditioning program for development level swimmers should be injury prevention. Age: 6 years and older Recommendations: 2–3 sessions a week. Choose 5–8 exercises from a variety of stability, plyometrics, squat progression, lunges, horizontal and vertical push/pull movements, gluteal and abdominal exercises. 6–9 years: 15–18 repetitions; 9–12 years: 10–12 repetitions; 12–15 years: 8–10 repetitions; 15–18 years: 6–8 repetitions 2. Football (soccer) NSO Website Fundamentals± Goal: Reduce injuries in youth football by 50% and improve physical performance in balance, jump performance and agility. Age: 5–13-year-olds Information: Includes fundamental movement skills and coordination drills Recommendations: Three levels of difficulty and 78 exercises in total. Perform all exercises (including push ups) twice a week, 3 ×10–15 s Perform± Goal: Reduce injury risk for the most common injuries in football Age: 10+ Information: Includes a variety of muscle strengthening activities in the performance (strength, balance, power) and cool down sections. Recommendations: Three levels of difficulty for each exercise. Performance: at training or home –5 min (complete all exercises 2 to 3x/week). Cool down: Perform at the end of training or home –5 min (complete all exercises 2 to 3x/week). Link to Fundamental and Perform programs. Additional internet search Link to Fundamental and Perform programs. 3. Gymnastics NSO Website Gymnastics for all Goal: Develop amazing skills while getting strong and flexible in fun and challenging ways Age: All ages Acrobatic gymnastics Goal: Grow in coordination, strength and teamwork, practise balance, throws and dance elements, perform spectacular routines with friends. Aerobic gymnastics Goal: Develop strength, flexibility and agility Trampoline Goal: Build coordination, improve strength and body awareness, develop in-air skills, ect. Rhythmic Goal: Stylish control, strength and flexibility while manipulating hand-held apparatus in this sport Additional internet search No additional youth focused information found 4. Australian football NSO Website Footy First Goal: Avoid leg injuries through improving strength Age: 14 years and older Recommendations: 10 min total every training session. Additional internet search No additional youth focused information found 5. Basketball NSO Website Aussie Hoops (continued) 4International Journal of Sports Science & Coaching 0(0) Table 1. (continued) Rank +Sport Muscle-strengthening activity recommendations by National Sporting Organisation Goal: Skill development (how to run, shoot, dribble, pass, bounce); social co-operation and teamwork; fun Age:5–10 years Information: Learn fundamental motor skills, basics of fitness conditioning, muscle management and wellbeing, importance of health and nutrition, physiological and mental skills nurtured. →Link to benefits: Learn fundamental motor skills, basics of fitness conditioning, muscle management and wellbeing, importance of health and nutrition, physiological and mental skills nurtured. Additional internet search No additional youth focused information found 6. Netball NSO Website No mention of strength, resistance training or muscular strengthening activity Additional internet search KNEE Program Junior Manual Goal: Reduce knee injuries in netball Age: 11–14 years Information: Complete warm up for junior netballers (under 14): sections include; warmup, strength, balance/ landing, agility. Recommendations: Twice a week for maximum effectiveness, don’t need to perform every exercise each time. Includes four exercises; Partner squats (2 ×12 reps), glute bridge (2 ×12 reps), knee plank (2 ×30 s), knee side plank (30 s each side). Netball specific strength and conditioning manual: Strength is only mentioned from 15 +years in stages of children’s development 7. Tennis NSO Website Developmental benefits for children Age: Primary and high school aged youth Information: Mention of improved leg strength, bone strength Training Age: No age noted, but mention of benefit for ‘beginners’ Information: Benefits of tennis include, footwork/agility, speed, core strength, power. Recommendations: Speed (power work in the gym, adding lower body exercises such as leg presses and squats), core strength (situps, Pilates), power (sprint work, bounding), circuit training (pushups, situps, chinups, squats, sprinting or exercise bike, aim for a mix of cardio and strength exercises, for 4–8 exercises per circuit, 3–6 circuits). Additional internet search No additional youth focused information found 8. Athletics NSO Website Fundamentals 1 Goal: Developing physical literacy. Games should develop fundamental movement skills such as running, jumping and throwing. Includes balance, agility, locomotion (running, hopping, jumping) and ball skills (catching, throwing, kicking) in different movement patterns. Age: 4–7 years Recommendations: Broad range of all-round body movement experiences. General body strength, including jumping/hopping/throwing Fundamentals 2 Goal: Build on all round conditioning and development from previous stage Age: 8–10 years Recommendations: Focus more on flexibility and physical strength (using medicine balls, and own body weight) Training I (General) Goal: More sport-specific skill development. There is a greater emphasis on coach driven structured practice designed to improve performance. Age: 13–15 years Recommendation: Specific athletics training plus various appropriate ancillary/recovery sessions, including strength training. Additional internet search No additional youth focused information found 9. Cricket NSO Website No mention of strength, resistance training or muscular strengthening activity (continued) Kennedy et al. 5 Key information was charted (see Table 1), including: name of program/resource, goal of program (if relevant), target age of participants, RT information included, and recommendations provided (including repetitions, exercise type, number of sessions each week). Synthesis of results Information within resources provided by the NSOs in relation to RT was extracted, aligned to both age and frequency. This was in to ascertain alignment with current international youth MSA guidelines (i.e., 5–17 years [age], three days per week [frequency]). 6 Results Swimming was the most popular sport (n =1,662,218, participation rate [PR] =34.3%), followed by football (soccer, n=705,749, PR =14.6%), gymnastics (n =491,753, PR = 10.2%), Australian football (n =386,824, PR =8.0%), basketball (n =370,355, PR =7.6%), netball (n =315,403, PR =6.5%), tennis (n =283,221, PR =5.8%), athletics (n =246,514, PR =5.1%), cricket (n =233,177, PR =4.8%), and rugby league (n =136,157, PR =2.8%). RT information/recommendations for each sport are provided in Table 2. Of the ten NSOs, all provided information/ resources on RT for athletes or coaches. NSOs varied in the information provided, with resources from four sports (swimming, football, netball, rugby league) listing recommendations on duration, frequency, and provided example exercises; whilst two others (basketball, cricket) referred to strength as a necessary skill but did not specify further information. The detail within information/resources also varied, with two sports (football, swimming) stipulating extensive resources (i.e., detailed guides including exercise prescription information) for RT implementation, whilst one other (basketball) provided brief information (i.e., wording on website) in reference to fitness and ‘muscle management’. Alignment with age (i.e., 5–17 years) and frequency (i.e., three days per week for all youth) recommendations within current youth physical activity guidelines fluctuated, from low, moderate to high alignment (see Figure 1). High alignment with MSA guidelines Football (soccer; second most popular sport) focused on injury prevention and included specific exercises to be performed across the week (two-three times per week for 5– 13-year-olds). The Perform +programs (Fundamentals+ and Perform+) were provided for athletes from 5 years old, indicating good alignment with the age component of physical activity guidelines. For frequency, these programs were closely aligned to guidelines, as they were recommended two to three times per week. Athletics (eighth most popular) included extensive information aligned to the guidelines, recommending the development of physical literacy and general body strength from four years of age in their Fundamentals 1 resource. Frequency in days per week was not explicitly mentioned; however, recommendations within the Fundamentals 1, Fundamentals 2, and Training I (General) programs allude to involvement by all youth to develop necessary strength for participation. Moderate alignment with MSA guidelines Swimming (most popular) provided limited information via the NSO website, however the Swim Land Program resource was found during the additional internet search. This program had some alignment with age recommendations, advised for those aged six and older. This program included extensive information on suggested exercises, and how many repetitions to do, with a focus on injury prevention. Like football (soccer), the swimming resource was closely aligned to guidelines, with recommendations for two to three times per week. Gymnastics (third most popular) offered general information on the development of strength that can occur in the various types of gymnastics. No specific age was mentioned, however RT was signposted as necessary for all Table 1. (continued) Rank +Sport Muscle-strengthening activity recommendations by National Sporting Organisation Additional internet search Coach specific skill element video in resource kit bag: Prepare to Perform –mentioned strength as a main element, especially in younger players. 10. Rugby League NSO Website Prepare to Play Goal: Develop key competencies including strength Age: 13–15 years Recommendations: Exercises including –single leg squat, Nordic lowers, diagonal push ups, neck strength, weight shifts Additional internet search No additional youth focused information found 6International Journal of Sports Science & Coaching 0(0) ages, with specific mention of strength and “getting strong” as a goal within all gymnastics events. Number of days per week were not provided, however similar to athletics, involvement by all youth was noted to develop necessary strength for participation. Tennis (seventh most popular) mentioned brief detail on leg and bone strength in their Developmental benefits for children resources. Within the training section, specificRT recommendations were provided with exercise and repetition information. These resources did not include a specificage range but did note the benefit of strength, speed, core strength, power, and circuit training for beginners/primary aged youth. As with athletics and gymnastics, number of days per week were not provided, however link to RT participation and improved health and fitness of all youth was alluded to. Low alignment with MSA guidelines For Australian football (fourth most popular), RT information was provided in coach specific resources. The Footy First resource recommended RT to avoid leg injuries for athletes aged 14 years and older. It was suggested that ten minutes of each training session be dedicated to improving strength, to avoid injury. The age recommendation from the Australian football resource was not aligned to guidelines, however the advice to perform in every training session was somewhat aligned to guidelines (however is dependent on the number of training sessions done each week). Basketball (fifth most popular) alludes to RT through goals of 5–10-year-olds including ‘basics of fitness conditioning and muscle management’. This provides some alignment to the starting age recommendation within the guidelines, yet no link to frequency was evident. Within netball (seventh most popular) an injury prevention program for 11–14-year-olds was included within resources, along with a strength and conditioning manual for those aged 15 years and older. These age recommendations are not aligned to guidelines, however the suggested frequency of twice per week almost meets the recommended three day guideline. Table 2. National sporting organisation information/recommendations on strength. Sport Age Information/Recommendations General and/or embedded in coaching resources Source of information Swimming 11 years and older Mention of strength as a physiological attribute General NSO website 6 years and older 2–3 sessions a week, with a primary focus on injury prevention. General Additional internet search Football/ Soccer 5 years and older 2 to 3x/week, primary focus on injury prevention General/coaching NSO website (additional internet search provided link to NSO website) Gymnastics All ages (including children and adolescent) Strength and skill development. General NSO website Australian football 14 years and older 10 min total every training session. Coaching NSO Coach dedicated website Basketball 5–10 years Learn fundamental motor skills, basics of fitness conditioning, muscle management and wellbeing, importance of health and nutrition, physiological and mental skills nurtured. General NSO website Netball 11 years and older KNEE injury prevention program (11–14 years), completed twice per week. Netball specific strength and conditioning manual (15+) General/coaching Additional internet search Tennis No age noted, but mention of benefit for ‘beginners’ Speed, core strength, power, and circuit training all recommended. General/coaching NSO website Athletics/ Running 4 years and older Develop physical literacy, general body strength, build on all round conditioning. General NSO website Cricket NR Mentioned strength as a main skill, especially in younger players. Coaching Additional internet search Rugby League 13 years and older Prep to play program for 13+to develop key competency including strength. Coaching NSO Coach dedicated website Kennedy et al. 7 Cricket (ninth most popular) did not report an age for RT participation; however, mentioned strength as a main skill of the sport –especially in younger players. Similar to basketball, this is somewhat associated with age recommendations, but not with frequency. Rugby league (tenth most popular) also provided a coach specific resource Prepare to Play, for athletes 13 years and older to develop strength as a key performance competency. Like Australian football, this age recommendation was not in alignment with guidelines, yet the mention of strength as a key competency was a partial link to RT being for all youth. Discussion The aim of our study was to explore and synthesise RT information and resources currently offered by the top ten ranked participation sports in Australia for children. A second aim was to determine the alignment of these resources with age and frequency recommendations with current international youth MSA guidelines 6 and consensus on youth RT. 7 Publicly available online resources offered by sports provided information related to RT; however, few were aligned to international MSA guidelines (i.e., performed three days per week for youth aged 5–17 years). To our knowledge, this is the first synthesis of RT related information/resources provided by NSOs within grassroots sport. Findings indicated that better and more consistent utilisation of evidence-based guidelines is needed across Australian grass root youth sports. Only two of the top ten sports (football [soccer] and athletics) recommended RT in alignment with the age recommendation of the international guidelines (i.e., 5–17 years). A further five (gymnastics, basketball, tennis, cricket) were somewhat aligned, with some having slightly older start ages or less definitive terminology (i.e., all ages/ beginners). The remaining three sports suggested commencement in adolescence. For these popular team sports (netball, rugby league, and Australian football), RT was introduced for adolescent athletes (i.e., by 11, 13, and 14 years of age respectively). This may negatively impact on the perceptions of parents, coaches, and youth themselves, regarding engaging in these types of activities earlier in life, as they might consider the introduction of resources from adolescence onwards as an indication RT should not be started until these ages. Not only is the development of strength necessary to allow for the many physical requirements (running fast, jumping high) that influence athletic performance and sporting success, 50 but it is also essential to reduce the risk of sport-related injury. 51 Focusing only on the technical and tactical aspects of a specific sport falls far short of preparing young athletes for the demands Figure 1. Sport specific alignment with MSA guidelines. Source: https://pixabay.com/. 8International Journal of Sports Science & Coaching 0(0)