Skip to content

Study note

Risk Factors, Diagnosis and Management of Bone Stress Injuries in Adolescent Athletes: A Narrative Review.

PMID 33923520 (2021): injury, load — Injury risk (study note for endurance athletes).

Updated Jul 22, 2026

Read the study note

Study note • PMID 33923520

Risk Factors, Diagnosis and Management of Bone Stress Injuries in Adolescent Athletes: A Narrative Review.

Sports (Basel, Switzerland)2021 • DOI 10.3390/sports9040052

How to use this page

This note summarizes one study record. Check the participants, methods, results, and limitations before applying it to training.

  • Design signal: narrative review.
  • Population relevance: athlete/trained context.
  • Consistency: single-study evidence.
  • Practical recommendation depends on tolerance, context, and whether it protects training consistency.

ELI5

In plain language

Physical activity is known to be beneficial for bone; however, some athletes who train intensely are at risk of bone stress injury (BSI). (narrative review; athletes).

In this narrative review, the abstract suggests a positive relationship with Injury risk. Treat this as a signal, not a guarantee; confirm methods and context in the full paper.

Takeaways

What the abstract suggests

  • Study question: Physical activity is known to be beneficial for bone; however, some athletes who train intensely are at risk of bone stress injury (BSI).
  • In this narrative review, the abstract suggests a positive relationship with Injury risk.
  • Population: athletes.
  • Protocol cues: abstract may omit dose/timing; use the full paper to replicate accurately.

Protocol

Protocol (as reported)

  • Intervention/exposure: injury, load.
  • Dose/time/duration: abstract doesn’t include enough detail; use the full paper’s methods section.
  • Outcomes: Injury risk.
  • Replication note: abstracts often omit adherence and timing; confirm details before changing training or supplementation.

Fit

Who it may help, and who should be cautious

Who it helps

  • Athletes similar to the study population (athletes) working on injury risk.
  • Athletes who can measure Injury risk with a repeatable workout or time-trial effort.

Who should be cautious

  • If you have symptoms or conditions that make the intervention risky, get professional guidance.
  • If you’re near race day and can’t safely test, defer the experiment.

Methods

What the study actually did

  • Design: narrative review.
  • Population: athletes.
  • Outcomes measured: Injury risk.
  • Source: PubMed PMID 33923520 (2021) — Sports (Basel, Switzerland).

Results excerpt

What the abstract reports

Incidence in adolescent athlete populations is between 3.9 and 19% with recurrence rates as high as 21%.

Note: excerpts are short; for full context, read the paper.

Limits

Limitations and bias

  • Abstract-only summaries can miss critical details (population, protocol, adherence, and context).
  • Reviews and consensus statements mix protocols and populations; recommendations may not match your exact constraints.
  • If your context differs (elite vs recreational; cycling vs running), adjust expectations and be conservative.
  • This is performance information, not medical advice.

Adaptive AI coach for iPhone

Meet your adaptive AI coach.

Tell your coach what you are training for. It builds the plan, follows the work you complete, and adapts upcoming training when recovery, your schedule, or real life changes.

Keep going

Sources