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Background: Knee Instability (KI) is described as a sense of knee buckling, shifting, or giving way during the weight bearing activities. High prevalence (60-80%) has been reported for KI amongst the patients with knee osteoarthritis (KOA). In this line, the present study targeted the effect of two interventions on self-reported KI and affected factors. Methods: In this single blind, randomized, and controlled trial, 36 patients with radiographic grading (Kellgren–Lawrence > II) of KOA were selected. Patients were divided into three groups namely, aquatic (n=12), Total Resistance exercises (TRX) (n=12) and control (n=12) by random. Then both 8-week TRX and aquatic exercises were carried out by experimental groups. The following measure were taken before and after interventions: Pain by visual analog scale (VAS), balance by Berg Balance Scale (BBS), quadriceps strength by dynamometer, knee flexion range of motion (ROM) by inclinometer, knee stiffness with Western Ontario and McMaster Universities Osteoarthritis (WOMAC), and self-reported KI with Felson's questionnaire. Results: The results demonstrated that KI, VAS, BBS improved over time both in TRX and aquatic groups significantly (p<0.05), but WOMAC(stiffness), knee flexion ROM, and quadriceps strength were significantly improved over time only for TRX (p<0.05). Post hoc test, also, showed that there were significant differences between interventions and control groups (p<0.05) for the VAS, KI, BBS, but for WOMAC(stiffness), a significant difference was observed only between TRX and control groups (p=0.05). Conclusions: Although TRX and aquatic interventions had a similar effect on the patients’ balance, pain and KI, TRX had more effect on WOMAC(stiffness), quadriceps strength, and knee flexion ROM than aquatic exercises.
Keywords
self-reported knee instability, Osteoarthritis, TRX, Aquatic Exercises
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CURRENT STATUS: Published
View the published article at BMC Sports Science, Medicine and Rehabilitation.
No community comments so far
Editorial decision: Minor revision
On 02 Apr, 2020
Review #2 received
Received 15 Feb, 2020
Review #1 received
Received 10 Feb, 2020
Reviewer #2 agreed
On 30 Jan, 2020
Reviewers invited
Invitations sent on 26 Jan, 2020
Reviewer #1 agreed
On 26 Jan, 2020
Editor assigned
On 24 Jan, 2020
Submission checks complete
On 23 Jan, 2020
Editor invited
On 23 Jan, 2020
Version 3
Posted 05 Dec, 2019
No comments provided
Editorial decision: Minor revision
On 08 Jan, 2020
Review #1 received
Received 25 Dec, 2019
Reviewer #1 agreed
On 08 Dec, 2019
Reviewers invited
Invitations sent on 03 Dec, 2019
Editor assigned
On 01 Dec, 2019
Submission checks complete
On 30 Nov, 2019
Editor invited
On 30 Nov, 2019
No comments provided
Editorial decision: Major revision
On 08 Nov, 2019
Review #2 received
Received 05 Nov, 2019
Review #1 received
Received 03 Nov, 2019
Reviewer #2 agreed
On 22 Oct, 2019
Reviewers invited
Invitations sent on 21 Oct, 2019
Reviewer #1 agreed
On 21 Oct, 2019
Editor assigned
On 18 Oct, 2019
Submission checks complete
On 17 Oct, 2019
Editor invited
On 17 Oct, 2019
No comments provided
Review #2 received
Received 15 Sep, 2019
Editorial decision: Major revision
On 15 Sep, 2019
Review #1 received
Received 11 Sep, 2019
Reviewer #2 agreed
On 29 Aug, 2019
Reviewer #1 agreed
On 28 Aug, 2019
Reviewers invited
Invitations sent on 24 Aug, 2019
Submission checks complete
On 21 Aug, 2019
Editor invited
On 21 Aug, 2019
Editor assigned
On 20 Aug, 2019
First submitted
On 08 Aug, 2019
Metrics
Comments: 0
PDF Downloads: ...
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A new preprint design is coming!
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See the published version of this preprint at BMC Sports Science, Medicine and Rehabilitation.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at BMC Sports Science, Medicine and Rehabilitation.
No community comments so far
Editorial decision: Minor revision
On 02 Apr, 2020
Review #2 received
Received 15 Feb, 2020
Review #1 received
Received 10 Feb, 2020
Reviewer #2 agreed
On 30 Jan, 2020
Reviewers invited
Invitations sent on 26 Jan, 2020
Reviewer #1 agreed
On 26 Jan, 2020
Editor assigned
On 24 Jan, 2020
Submission checks complete
On 23 Jan, 2020
Editor invited
On 23 Jan, 2020
Version 3
Posted 05 Dec, 2019
No comments provided
Editorial decision: Minor revision
On 08 Jan, 2020
Review #1 received
Received 25 Dec, 2019
Reviewer #1 agreed
On 08 Dec, 2019
Reviewers invited
Invitations sent on 03 Dec, 2019
Editor assigned
On 01 Dec, 2019
Submission checks complete
On 30 Nov, 2019
Editor invited
On 30 Nov, 2019
No comments provided
Editorial decision: Major revision
On 08 Nov, 2019
Review #2 received
Received 05 Nov, 2019
Review #1 received
Received 03 Nov, 2019
Reviewer #2 agreed
On 22 Oct, 2019
Reviewers invited
Invitations sent on 21 Oct, 2019
Reviewer #1 agreed
On 21 Oct, 2019
Editor assigned
On 18 Oct, 2019
Submission checks complete
On 17 Oct, 2019
Editor invited
On 17 Oct, 2019
No comments provided
Review #2 received
Received 15 Sep, 2019
Editorial decision: Major revision
On 15 Sep, 2019
Review #1 received
Received 11 Sep, 2019
Reviewer #2 agreed
On 29 Aug, 2019
Reviewer #1 agreed
On 28 Aug, 2019
Reviewers invited
Invitations sent on 24 Aug, 2019
Submission checks complete
On 21 Aug, 2019
Editor invited
On 21 Aug, 2019
Editor assigned
On 20 Aug, 2019
First submitted
On 08 Aug, 2019
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at BMC Sports Science, Medicine and Rehabilitation.
Background: Knee Instability (KI) is described as a sense of knee buckling, shifting, or giving way during the weight bearing activities. High prevalence (60-80%) has been reported for KI amongst the patients with knee osteoarthritis (KOA). In this line, the present study targeted the effect of two interventions on self-reported KI and affected factors. Methods: In this single blind, randomized, and controlled trial, 36 patients with radiographic grading (Kellgren–Lawrence > II) of KOA were selected. Patients were divided into three groups namely, aquatic (n=12), Total Resistance exercises (TRX) (n=12) and control (n=12) by random. Then both 8-week TRX and aquatic exercises were carried out by experimental groups. The following measure were taken before and after interventions: Pain by visual analog scale (VAS), balance by Berg Balance Scale (BBS), quadriceps strength by dynamometer, knee flexion range of motion (ROM) by inclinometer, knee stiffness with Western Ontario and McMaster Universities Osteoarthritis (WOMAC), and self-reported KI with Felson's questionnaire. Results: The results demonstrated that KI, VAS, BBS improved over time both in TRX and aquatic groups significantly (p<0.05), but WOMAC(stiffness), knee flexion ROM, and quadriceps strength were significantly improved over time only for TRX (p<0.05). Post hoc test, also, showed that there were significant differences between interventions and control groups (p<0.05) for the VAS, KI, BBS, but for WOMAC(stiffness), a significant difference was observed only between TRX and control groups (p=0.05). Conclusions: Although TRX and aquatic interventions had a similar effect on the patients’ balance, pain and KI, TRX had more effect on WOMAC(stiffness), quadriceps strength, and knee flexion ROM than aquatic exercises.
Figure 1
Figure 2
This is a list of supplementary files associated with this preprint. Click to download.
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