Biomechanics of Rugby Tackle Techniques in Youth and Adult Players: A Systematic Review of Age-Specific Injury Risk and Performance Implications
Sports Medicine · 28 Aug 2026
† Impact is the editorial-priority score. All scores are out of 100. Clinical is a stored clinical-importance score from the earlier method; it has not been recalculated.
Why it matters
These findings help clinicians and coaches understand which biomechanical tackle features drive concussion and cervical injury risk, informing age-appropriate coaching to reduce injury in a sport with very high concussion rates during tackling.
The evidence
This is a systematic review of 32 studies examining rugby tackle biomechanics and injury risk in youth versus adult players. It found that tackles with the tackler's head positioned in front of the ball carrier raised per-tackle concussion risk roughly five- to eight-fold and were more common in youth; tackling with the dominant shoulder produced lower peak head accelerations than non-dominant shoulder tackles (23.0 g vs 30.4 g in one study), though this advantage diminished with fatigue; and youth players showed lower tackle proficiency (less hip/knee flexion, less leg drive, more arm-only contact) than adults.
A coherent primary effect estimate is unavailable. Clinical relevance does not estimate treatment benefit.
Why this rigour score?
Meta-analysis of observational studiesDesign starting point: 37.4
Raised the score
- Prospectively registered+5.1
- Comprehensive literature search+3.4
Lowered the score
- Pools observational studies−6.8
- No assessment of publication bias across 32 studies−6.8
Methods at a glance
Recorded assessment- Comprehensive literature searchMet
- Risk of bias assessedMet
- Bias considered in synthesisMet
- Publication bias assessedNot met
- Study exclusions justifiedMet
- Prospective registrationMet
Not reported does not mean not done. Checks have different weights; this is not a count of boxes ticked.
See the full score breakdown
- Study design starting point
- 37.4
- Prospectively registered
- +5.1
- Pools observational studies
- −6.8
- Comprehensive literature search
- +3.4
- Risk of bias assessed in the included studies
- +3.4
- Risk of bias carried into the synthesis
- +2.5
- Excluded studies listed and justified
- +1.7
- No assessment of publication bias across 32 studies
- −6.8
- Final rigour score rounded
- 40 / 100
Study design sets the starting point and a ceiling of 78. Recorded methods then adjust the score. Points are shown to one decimal place; the final score uses unrounded values.
Checklist from the stored appraisal. “Not met” describes the recorded criterion; it does not always produce a deduction. This overview supports reading the full study.
For journal club
1.Should youth rugby coaching programmes specifically emphasize correct head placement and dominant-shoulder engagement earlier in development, given that youth players show less proficient tackle mechanics than adults?
2.How should coaches address the erosion of the 'dominant shoulder' safety advantage under match fatigue, and does this argue for conditioning-focused injury prevention strategies?
Original publication title
Biomechanics of Rugby Tackle Techniques in Youth and Adult Players: A Systematic Review of Age-Specific Injury Risk and Performance Implications