Background Physical active induced fatigue may result altered trunk and pelvic biomechanics during athletic tasks.

Objective To summarize and determine the effect of physical fatigue on trunk and pelvic biomechanics during jump-landings in healthy, physically active populations.

Design Systematic review of literature.

Setting Electronic databases PubMed, Web of Science, Embase, CINAHL, and SPORTDiscus were consulted up to and including April 2021.

Patients (or Participants) Cross-sectional studies including healthy, physically active populations.

Interventions (or Assessment of Risk Factors) Two reviewers independently screened for relevant studies. Methodological quality was assessed by a modified Downs and Black checklist.

Main Outcome Measurements Studies investigating the effect of fatigue on trunk and pelvic kinematics and/or muscular activity during double- and single-legged jump-landings and jump-landing related cutting tasks in healthy, physically active populations.

Results Eighteen studies investigating trunk and pelvic landing biomechanics before and after fatigue met the inclusion criteria. Methodological quality was moderate to high among the included studies. The results of the systematic review show a wide variability of trunk and pelvic landing strategies after fatigue. Based on the kinematic results, there is evidence for more trunk flexion during standardized jump-landings after fatigue (p=0,001–0,007). Regarding muscular activity, there is no evidence of fatigue-related alterations in lumbo-pelvic muscular activations during landing.

Conclusions The results of this systematic review provide evidence for adaptive trunk and pelvic biomechanical strategies during landing after fatigue to potentially unload fatigued lower extremity musculoskeletal structures.