Risks of Endurance Training in Minors - A Narrative Review

Authors

  • Jan T. Tomasik Independent Public Healthcare Institution of the Ministry of the Interior and Administration in Kraków, Kraków, Poland
  • Michał S. Bochenek Independent Public Healthcare Institution of the Ministry of the Interior and Administration in Kraków, Kraków, Poland
  • Mikołaj Dubiel Independent Public Healthcare Institution of the Ministry of the Interior and Administration in Kraków, Kraków, Poland
  • Sylwia Wiktoria Kolano Independent Public Healthcare Institution of the Ministry of the Interior and Administration in Kraków, Kraków, Poland
  • Daria Wańczyk Centrum Stomatologii Junior Dent, Kraków, Poland
  • Kinga Filip Military Clinical Hospital With Polyclinic, Kraków, Poland
  • Aleksandra Gródek Military Clinical Hospital With Polyclinic, Kraków, Poland
  • Wojciech Jakubowski HCP Medical Center, Poznań, Poland

DOI:

https://doi.org/10.6000/

Keywords:

Pediatric sports medicine, adolescent athlete, endurance training, athletic injuries, pediatric sports risks

Abstract

Background: Participation in endurance sports among children and adolescents is increasing. Pediatric
athletes differ physiologically from adults due to ongoing somatic growth, biological maturation, and endocrine
development, which modify both adaptive responses and injury susceptibility.
Aim: This review synthesizes current evidence on physiological adaptations to endurance training in youth and examines
the major musculoskeletal, cardiovascular, metabolic, endocrine, and psychosocial risks associated with high training
loads.
Materials and Methods: A narrative review of literature published between January 1990 and January 2026 was
conducted using PubMed and MEDLINE, supplemented by consensus statements from major sports medicine
organizations.
Results: Endurance performance improvements in youth are influenced more by neuromuscular maturation than by large
central cardiovascular adaptations, with modest training-induced changes in VO₂ max before puberty. The developing
musculoskeletal system demonstrates high adaptive plasticity but increased vulnerability to overuse injuries, including
physeal stress injuries and bone stress injuries. Inadequate energy availability may disrupt endocrine function and impair
growth and bone development.
Conclusions: While endurance training promotes beneficial physiological adaptations, the developing athlete remains
vulnerable to overuse injuries, low energy availability, psychosocial stressors, and long-term health risks. Recognition of
these mechanisms is essential for accurate risk interpretation and safe training practices.

References

Myer GD, Jayanthi N, DiFiori JP, Faigenbaum AD, Kiefer

AW, Logerstedt D, et al. Sport specialization, part I. Sports

Health 2015; 7: 437-42.

https://doi.org/10.1177/1941738115598747

[2] Caine D, DiFiori J, Maffulli N. Physeal injuries in children’s

and youth sports: reasons for concern? Br J Sports Med

2006; 40: 749-60.

https://doi.org/10.1136/bjsm.2005.017822

[3] Micheli LJ, Fehlandt AF. Overuse injuries to tendons and

apophyses in children and adolescents. Clin Sports Med

1992; 11: 713-26.

https://doi.org/10.1016/S0278-5919(20)30480-4

[4] Mountjoy M, Ackerman KE, Bailey DM, Burke LM,

Constantini N, Hackney AC, et al. International Olympic

Committee (IOC) consensus statement on relative energy

deficiency in sport (RED-S). Br J Sports Med 2023; 57: 1073-

98.

https://doi.org/10.1136/bjsports-2023-106994

[5] Elliott-Sale KJ, Tenforde AS, Parziale AL, Holtzman B,

Ackerman KE. Endocrine effects of relative energy deficiency

in sport. Int J Sport Nutr Exerc Metab 2018 [cited 2025 Nov

17].

https://doi.org/10.1123/ijsnem.2018-0127

[6] Armstrong N. Paediatric exercise physiology. Churchill

Livingstone; 2007.

[7] Rowland TW. Children’s exercise physiology. 2nd ed.

Champaign (IL): Human Kinetics; 2005.

[8] Malina RM, Bouchard C, Bar-Or O. Growth, maturation, and

physical activity. Human Kinetics; 2004.

https://doi.org/10.5040/9781492596837

[9] Warden SJ, Mantila Roosa SM, Kersh ME, Hurd AL, Fleisig

GS, Pandy MG, et al. Physical activity when young provides

lifelong benefits to cortical bone size and strength in men.

Proc Natl Acad Sci USA 2014; 111: 5337-42.

https://doi.org/10.1073/pnas.1321605111

[10] Farrell C, Turgeon DR. Normal versus chronic adaptations to

aerobic exercise. In: StatPearls. Treasure Island (FL):

StatPearls Publishing; 2023. Available from:

http://www.ncbi.nlm.nih.gov/books/NBK572066/

[11] Payne VG, Morrow JR Jr. Exercise and VO₂max in children:

a meta-analysis. Res Q Exerc Sport 1993; 64: 305-13.

https://doi.org/10.1080/02701367.1993.10608815

[12] McNarry M, Jones A. The influence of training status on the

aerobic and anaerobic responses to exercise in children: a

review. Eur J Sport Sci 2014; 14 Suppl 1: S57-68.

https://doi.org/10.1080/17461391.2011.643316

[13] Maron BJ, Pelliccia A. The heart of trained athletes.

Circulation 2006; 114: 1633-44.

https://doi.org/10.1161/CIRCULATIONAHA.106.613562

[14] Turley KR, Wilmore JH. Cardiovascular responses to

treadmill and cycle ergometer exercise in children and adults.

J Appl Physiol 1997; 83: 948-57.

https://doi.org/10.1152/jappl.1997.83.3.948

[15] Aucouturier J, Baker JS, Duché P. Fat and carbohydrate

metabolism during submaximal exercise in children. Sports

Med 2008; 38: 213-38.

https://doi.org/10.2165/00007256-200838030-00003

[16] Boisseau N, Delamarche P. Metabolic and hormonal

responses to exercise in children and adolescents. Sports

Med 2000; 30: 405-22.

https://doi.org/10.2165/00007256-200030060-00003

[17] Kostyak JC, Kris-Etherton P, Bagshaw D, DeLany JP, Farrell

PA. Relative fat oxidation is higher in children than adults.

Nutr J 2007; 6: 19.

https://doi.org/10.1186/1475-2891-6-19

[18] Falk B, Dotan R. Children’s thermoregulation during exercise

in the heat: a revisit. Appl Physiol Nutr Metab 2008; 33: 420-

7.

https://doi.org/10.1139/H07-185

[19] Gomes LHLS, Carneiro-Júnior MA, Marins JCB.

Thermoregulatory responses of children exercising in a hot

environment. Rev Paul Pediatr 2013; 31: 104-10.

https://doi.org/10.1590/S0103-05822013000100017

[20] Saunders PU, Pyne DB, Telford RD, Hawley JA. Factors

affecting running economy in trained distance runners.

Sports Med 2004; 34: 465-85.

https://doi.org/10.2165/00007256-200434070-00005

[21] Krahenbuhl GS, Williams TJ. Running economy: changes

with age during childhood and adolescence. Med Sci Sports

Exerc 1992; 24: 462-6.

https://doi.org/10.1249/00005768-199204000-00012

[22] Radnor JM, Oliver JL, Waugh CM, Myer GD, Moore IS, Lloyd

RS. The influence of growth and maturation on stretchshortening cycle function in youth. Sports Med 2018; 48: 57-

71.

https://doi.org/10.1007/s40279-017-0785-0

[23] Mersmann F, Bohm S, Schroll A, Marzilger R, Arampatzis A.

Athletic training affects the uniformity of muscle and tendon

adaptation during adolescence. J Appl Physiol 2016; 121:

893-9.

https://doi.org/10.1152/japplphysiol.00493.2016

[24] Brenner JS; Council on Sports Medicine and Fitness.

Overuse injuries, overtraining, and burnout in child and

adolescent athletes. Pediatrics 2007; 119: 1242-5.

https://doi.org/10.1542/peds.2007-0887

[25] DiFiori JP, Benjamin HJ, Brenner JS, Gregory A, Jayanthi N,

Landry GL, et al. Overuse injuries and burnout in youth

sports: a position statement from the American Medical

Society for Sports Medicine. Br J Sports Med 2014; 48: 287-

8.

https://doi.org/10.1136/bjsports-2013-093299

Risks of Endurance Training in Minors International Journal of Child Health and Nutrition, 2026, Vol. 15, No. 3 135

[26] Rosendahl K, Strouse PJ. Sports injury of the pediatric

musculoskeletal system. Radiol Med 2016; 121: 431-41.

https://doi.org/10.1007/s11547-015-0615-0

[27] Meyers AL, Taqi M, Marquart MJ. Pediatric physeal injuries

overview. In: StatPearls. Treasure Island (FL): StatPearls

Publishing; 2024. Available from:

http://www.ncbi.nlm.nih.gov/books/NBK560546/

[28] Guldhammer C, Rathleff MS, Jensen HP, Holden S. Longterm prognosis and impact of Osgood-Schlatter disease 4

years after diagnosis: a retrospective study. Orthop J Sports

Med 2019; 7: 2325967119878136.

https://doi.org/10.1177/2325967119878136

[29] Maruszczak K, Madej T, Gawda P. Lower limb

osteochondrosis and apophysitis in young athletes—a

comprehensive review. Appl Sci 2024; 14: 11795.

https://doi.org/10.3390/app142411795

[30] Costa TM, Borba VZC, Correa RGP, Moreira CA. Stress

fractures. Arch Endocrinol Metab 2022; 66: 765-73.

https://doi.org/10.20945/2359-3997000000562

[31] Mara F, Plasa M. Optimizing physical performance and

nutritional strategies for young basketball players: training

load distribution and recovery approaches. Int J Child Health

Nutr 2025; 14: 398-407.

https://doi.org/10.6000/1929-4247.2025.14.04.7

[32] Loud KJ, Gordon CM, Micheli LJ, Field AE. Correlates of

stress fractures among preadolescent and adolescent girls.

Pediatrics 2005; 115: e399-406.

https://doi.org/10.1542/peds.2004-1868

[33] Baumgartner L, Weberruß H, Schulz T, Oberhoffer-Fritz RM,

Agbaje AO. Longitudinal association of peak oxygen uptake

with vascular and cardiac structure and function in German

pediatric athletes. Am J Physiol Heart Circ Physiol 2025; 329:

H959-68.

https://doi.org/10.1152/ajpheart.00570.2025

[34] Braunstein GD. The hypothalamus. In: The pituitary.

Academic Press; 2011; pp. 303-41.

https://doi.org/10.1016/B978-0-12-380926-1.10009-4

[35] Viswanathan V, Eugster EA. Etiology and treatment of

hypogonadism in adolescents. Pediatr Clin North Am 2011;

58: 1181-x.

https://doi.org/10.1016/j.pcl.2011.07.009

[36] Angelidi AM, Stefanakis K, Chou SH, Valenzuela-Vallejo L,

Dipla K, Boutari C, et al. Relative energy deficiency in sport

(REDs): endocrine manifestations, pathophysiology and

treatments. Endocr Rev 2024; 45: 676-708.

https://doi.org/10.1210/endrev/bnae011

[37] Brook CGD, Clayton P, Brown R. Brook’s clinical pediatric

endocrinology. John Wiley & Sons; 2009.

https://doi.org/10.1002/9781444316728

[38] Leproult R, Van Cauter E. Role of sleep and sleep loss in

hormonal release and metabolism. Endocr Dev 2010; 17: 11-

21.

https://doi.org/10.1159/000262524

[39] Soliman A, De Sanctis V, Elalaily R. Nutrition and pubertal

development. Indian J Endocrinol Metab 2014; 18: S39-47.

https://doi.org/10.4103/2230-8210.145073

[40] Gould RJ, Ridout AJ, Newton JL. Relative energy deficiency

in sport (RED-S) in adolescents: a practical review. Int J

Sports Med 2022; 44: 236-46.

https://doi.org/10.1055/a-1947-3174

[41] Borowiec J, Banio-Krajnik A, Malchrowicz-Mośko E,

Kantanista A. Eating disorder risk in adolescent and adult

female athletes: the role of body satisfaction, sport type, BMI,

level of competition, and training background. BMC Sports

Sci Med Rehabil 2023; 15: 91.

https://doi.org/10.1186/s13102-023-00683-7

[42] Sundgot-Borgen J, Torstveit MK. Prevalence of eating

disorders in elite athletes is higher than in the general

population. Clin J Sport Med 2004; 14: 25.

https://doi.org/10.1097/00042752-200401000-00005

[43] Martinsen M, Sundgot-Borgen J. Higher prevalence of eating

disorders among adolescent elite athletes than controls. Med

Sci Sports Exerc 2013; 45: 1188-97.

https://doi.org/10.1249/MSS.0b013e318281a939

[44] Jayanthi N, Pinkham C, Dugas L, Patrick B, LaBella C.

Sports specialization in young athletes: evidence-based

recommendations. Sports Health 2013; 5: 251-7.

https://doi.org/10.1177/1941738112464626

[45] Rejeb A, Johnson A, Vaeyens R, Horobeanu C, Farooq A,

Witvrouw E. Compelling overuse injury incidence in youth

multisport athletes. Eur J Sport Sci 2017; 17: 495-502.

https://doi.org/10.1080/17461391.2016.1275820

[46] Beck B, Drysdale L. Risk factors, diagnosis and management

of bone stress injuries in adolescent athletes: a narrative

review. Sports (Basel) 2021; 9: 52.

https://doi.org/10.3390/sports9040052

[47] Haines M, Pirlo L, Bowles KA, Williams CM. Describing

frequencies of lower-limb apophyseal injuries in children and

adolescents: a systematic review. Clin J Sport Med 2022; 32:

433-9.

https://doi.org/10.1097/JSM.0000000000000925

[48] Wedderkopp N, Wang C, Steele R, Hebert J, Rexen C,

Jespersen E, et al. Incidence of and risk factors for lower

extremity apophysitis in children and adolescents. Sports

Med 2025.

https://doi.org/10.1007/s40279-025-02328-w

Published

2026-07-13

Issue

Section

General Articles

How to Cite

Risks of Endurance Training in Minors - A Narrative Review. (2026). International Journal of Child Health and Nutrition, 15(3), 127-135. https://doi.org/10.6000/

Similar Articles

11-20 of 177

You may also start an advanced similarity search for this article.