Evidence map›Paper›PMID 29234554›Full record

ArticleInternational journal of sports physical therapy2017

THE INFLUENCE OF EXTRINSIC FACTORS ON KNEE BIOMECHANICS DURING CYCLING: A SYSTEMATIC REVIEW OF THE LITERATURE.

Therese E Johnston, Tiara A Baskins, Rachael V Koppel, Samuel A Oliver, Donald J Stieber, Lisa T Hoglund

Open access · diamondAbstract read
In one paragraph

Article in International journal of sports physical therapy, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.3field-weighted citation impact, top 42% of its field
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

7 citing papers in PubMed, 30 citations in OpenAlex.

  1. Trial
  2. Lived Experiences of Male Recreational Cyclists with Patellofemoral Pain in Al Madinah, Saudi Arabia.International journal of environmental research and public health · 2026
    Article
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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

6 authors at 2 institutions in 1 country.

Therese E JohnstonDepartment of Physical Therapy, Jefferson College of Health Professions, Philadelphia, PA, USA.
Tiara A BaskinsDepartment of Physical Therapy, Jefferson College of Health Professions, Philadelphia, PA, USA.
Rachael V KoppelDepartment of Physical Therapy, Jefferson College of Health Professions, Philadelphia, PA, USA.
Samuel A OliverDepartment of Physical Therapy, Jefferson College of Health Professions, Philadelphia, PA, USA.
Donald J StieberDepartment of Physical Therapy, Jefferson College of Health Professions, Philadelphia, PA, USA.
Lisa T HoglundDepartment of Physical Therapy, Jefferson College of Health Professions, Philadelphia, PA, USA.
Jefferson College · USJefferson College of Health Sciences · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe knee is susceptible to injury during cycling due to the repetitive nature of the activity while generating torque on the pedal. Knee pain is the most common overuse related injury reported by cyclists, and intrinsic and extrinsic factors can contribute to the development of knee pain. PURPOSE: Due to the potential for various knee injuries, this purpose of this systematic review of the literature was to determine the association between biomechanical factors and knee injury risk in cyclists. STUDY

designSystematic review of the literature.

methodsLiterature searches were performed using CINAHL, Ovid, PubMed, Scopus and SPORTDiscus. Quality of studies was assessed using the Downs and Black Scale for non-randomized trials.

resultsFourteen papers were identified that met inclusion and exclusion criteria. Only four studies included cyclists with knee pain. Studies were small with sample sizes ranging from 9-24 participants, and were of low to moderate quality. Biomechanical factors that may impact knee pain include cadence, power output, crank length, saddle fore/aft position, saddle height, and foot position. Changing these factors may lead to differing effects for cyclists who experience knee pain based on specific anatomical location.

conclusionChanges in cycling parameters or positioning on the bicycle can impact movement, forces, and muscle activity around the knee. While studies show differences across some of the extrinsic factors included in this review, there is a lack of direct association between parameters/positioning on the cycle and knee injury risk due to the limited studies examining cyclists with and without pain or injury. The results of this review can provide guidance to professionals treating cyclists with knee pain, but more research is needed. LEVEL OF EVIDENCE: 3a.

Indexed as

Biomechanicscyclingknee injuryknee painoveruse

Identifiers

PMID29234554
PMCPMC5717478
OpenAlexW2781611417

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.