Upper Extremity Return to Sport Functional Testing: A Systematic Review.

When athletes are recovering from an upper extremity injury, clinicians often want a functional test that can tell them whether the arm is ready to handle the demands of sport again. But there has never been a clear picture of which of these tests actually hold up scientifically, or what a good versus poor result even means. This systematic review pulled together 60 studies examining the measurement properties of upper extremity functional tests, focusing especially on three that show up most often in the literature: the Single Arm Shot Put test, the Closed Kinetic Chain Upper Extremity Stability Test, and the Upper Quarter Y-Balance test. The review found that the Shot Put test and the Closed Kinetic Chain test were consistently reliable and showed meaningful relationships with strength measures and other functional tests across different populations, including injured athletes.

The Y-Balance test performed much less consistently, with reliability ranging widely and many studies finding no clear relationship to strength or other tests. An emerging test, the Athletic Shoulder Test, showed strong reliability in early work. The main limitation is that this is a synthesis of many different studies with varying quality and populations, so conclusions about any single test's readiness for widespread clinical use should be tempered accordingly.

If you have had a shoulder or arm injury and are working your way back to sport, your physiotherapist may use a specific test to check how ready your arm is for the demands of competition. This review looked at 60 studies to figure out which of these tests actually measure what they claim to measure, and which ones are backed by more reliable science. The researchers found that two tests, one involving throwing a medicine ball as far as possible with one arm, and another involving holding a plank-like position while touching markers on the floor, performed consistently well across many different groups of athletes, including those with existing shoulder pain.

A third commonly used test, which involves reaching in different directions while balancing on one arm, gave much more inconsistent results from study to study, and often didn't line up well with other measures of strength or function. This doesn't mean any single test can definitively tell you whether you're ready to return to sport. It means that some tests currently have more consistent scientific support behind them than others, and the evidence quality varies a lot across the studies reviewed.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This systematic review, following PRISMA guidelines with PEDro-based quality assessment, screened over 5,000 records and analyzed 60 studies examining reliability, validity, and responsiveness of upper extremity return-to-sport functional tests. The Single Arm Shot Put test showed reliability with the majority of studies reporting intraclass correlation coefficients above 0.90, along with construct validity via correlations to isokinetic torque and other functional measures.

The Closed Kinetic Chain Upper Extremity Stability Test demonstrated good to excellent reliability (ICC 0.73 to 0.98) across age, sex, sport, and shoulder pain status, with construct validity against grip and isokinetic strength (P<0.01), concurrent validity against other functional tests, and notably predictive validity for future injury risk plus discriminant validity between injured and uninjured athletes. In contrast, the Upper Quarter Y-Balance test showed markedly inconsistent reliability (ICC 0.47 to 0.97), and numerous studies found no significant relationship with strength or other functional measures, raising questions about its construct validity. The Athletic Shoulder Test, an emerging isometric strength measure, showed excellent test-retest reliability (ICC 0.94 to 0.98) and concurrent validity across different measurement tools, though this evidence base is smaller and newer.

Given the heterogeneity of populations, methods, and quality across the 60 included studies, these findings should be interpreted as indicating relative strength of evidence for specific tests rather than definitive clinical thresholds.