Evidence map›Paper›PMID 34781777›Full record

ArticleSports health

Chronic Workload, Subjective Arm Health, and Throwing Injury in High School Baseball Players: 3-Year Retrospective Pilot Study.

Sameer Mehta, Sisi Tang, Chamith Rajapakse, Scott Juzwak, Brittany Dowling

Abstract read
In one paragraph

Article in Sports health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Injuries in Professional Roundnet (Spikeball) Athletes.Sports medicine international open · 2026
    Article
  4. Risk Factors and Injury Prevention in the Throwing Athlete.Arthroscopy, sports medicine, and rehabilitation · 2025
    Article
  5. Preseason Workload in Collegiate Baseball Pitchers.International journal of sports physical therapy · 2025
    Article
  6. Article
  7. An Interval Throwing Program for Baseball Pitchers Based upon Workload Data.International journal of sports physical therapy · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Sameer MehtaPerformance Department, Orlando Magic, Orlando, Florida.
Sisi TangDepartment of Radiology and Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania.
Chamith RajapakseDepartment of Radiology and Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania.
Scott JuzwakThe Center for Integrated Manual Therapies, Columbia, Maryland.
Brittany DowlingSports Performance Center, Midwest Orthopaedics at Rush, Oak Brook, Illinois.ORCID https://orcid.org/0000-0002-5281-3658

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBaseball workloads are monitored by pitch counts, appearances, innings per appearance, ball velocity, and distance, whereas current workload standards neglect throws made during nongame situations. The association between total workloads, subjective measures, and injury in baseball is poorly understood. The question remains whether baseball athletes are at higher risk of injury by throwing more often or if they generate injury resilience when appropriately transitioned into the higher demands of throwing. HYPOTHESIS: Increased chronic load, along with subjective arm health measures, are related to decreased injury risk. STUDY

designClinical research. LEVEL OF EVIDENCE: Level 3.

methodsA total of 49 male baseball players (age 17.9 ± 0.4 years, height 181.8 ± 6.8 cm, body mass 80.6 ± 9.1 kg) competing at the varsity high school level were included in this 3-year retrospective data analysis from 2016 to 2019. Players wore the motusTHROW sleeve and sensor during all throwing activities.

resultsA total of 898,492 throws and 9455 athletic exposures were captured with the motusTHROW sensors. There were 24 injuries recorded throughout the 3-year analysis, with 11 throwing-related and 13 non-throwing related injuries. Results of the 1-way analysis of variance found chronic load was significantly related to throwing-injury occurrence (

conclusionThis study revealed a significant relationship between chronic load, subjective arm health, and throwing-related injury in varsity high school baseball players. Contrary to our hypothesis, increased chronic load was associated with increased injury risk. However, subjective arm health measures remain a relevant factor in assessing injury risk. Normative data for this population also provide key information around positional demands along with overall demands of the sport during the competitive season and off-season.

Indexed as

BaseballWorkloadAdolescentArmHumansMalePilot ProjectsRetrospective StudiesSchoolsinjury riskinternal measureoverhead athletewearableworkload management

Identifiers

PMID34781777
PMCPMC8669927

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.