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Table 9 Outcome Summary for Temporal Variables

From: Head kinematics in patients with neck pain compared to asymptomatic controls: a systematic review

Movement Time

Summary of findings for NP/ INP:

• Increased movement time in NP/ INP patients compared to healthy controls

• Level of evidence: strong

Summary of findings for WAD:

• Inconsistent findings on movement time in WAD patients compared to healthy controls

• Level of evidence: conflicting

Publication

Sample

Task

Task specifications

Results compared to C

Risk of Bias

Ernst et al. [60]

INP 25

WAD 13

C 38

Head aiming;

Tracking

Speed: Self-preferred

Tracking Path: Predictable

Patterns: Figure of eight (F8), Zig Zag (ZZ)

Increased in INP

No significant differences in WAD

low

Sarig Bahat et al. [75]

INP 12

WAD 8

C 20

Head aiming;

Tracking

Speed: Self-preferred

Tracking Path: Predictable

Pattern: Zig Zag (ZZ)

Increased in INP

No significant differences in WAD

low

Descarreaux et al. [58]

INP 19

C 20

Head aiming;

Pointing

Speed: As fast as possible

Target: Predictable

Direction: ROT

Increased in INP

moderate

Gadotti et al. [61]

WAD 5

C 15

Head aiming;

Pointing

Speed: As fast as possible

Target: Unpredictable

Direction: ROT

Increased in WAD

moderate

Yang et al. [82]

NP 18

C 18

Unconstrained

Speed: Self-preferred

Direction: Circumduction

Increased in NP

high

Zhou et al. [83]

NP 28

C 23

Unconstrained

Speed: Self-preferred

Direction: Circumduction

Increased in NP

high

Reaction Time

Summary of findings for NP:

• No differences on reaction time in NP patients compared to healthy controls

• Level of evidence: very limited

Summary of findings for WAD:

• Increased reaction time in WAD patients compared to healthy controls

• Level of evidence: moderate*

Publication

Sample

Task

Task specifications

Results compared to C

Risk of Bias

Gadotti et al. [61]

WAD 5

C 15

Head aiming;

Pointing

Speed: As fast as possible

Target: Unpredictable

Direction: ROT

Increased in WAD

moderate

Ohberg et al. [69]

WAD 59

C 56

Unconstrained

Speed: As fast as possible

Directions: FLEX/EXT, ROT

Increased in WAD

moderate

Sarig Bahat et al. [73]

NP 25

C 42

Head aiming;

Pointing

Speed: As fast as possible

Targets: Unpredictable

Directions: FLEX/EXT, ROT

No significant differences

high

Acceleration Phase Duration

Summary of findings for INP:

• No differences in acceleration phase duration in NP patients compared to healthy controls

• Level of evidence: limited

Publication

Sample

Task

Task specifications

Results compared to C

Risk of Bias

Descarreaux et al. [58]

INP 19

C 20

Head aiming;

Pointing

Speed: As fast as possible

Target: Predictable

Direction: ROT

No significant differences

moderate

Deceleration Phase Duration

Summary of finding:

• Increased deceleration phase duration in INP patients compared to healthy controls

• Level of evidence: limited

Publication

Sample

Task

Task specifications

Results compared to C

Risk of Bias

Descarreaux et al. [58]

INP 19

C 20

Head aiming;

Pointing

Speed: As fast as possible

Target: Predictable

Direction: ROT

Increased in NP

moderate

Ratio of Phase Durations

Summary of findings for NP/ INP:

• Inconsistent findings on ratio of phase durations in NP/ INP patients compared to healthy controls

• Level of evidence: conflicting

Summary of findings for WAD:

• No difference on ratio of phase durations in WAD patients compared to healthy controls

• Level of evidence: limited

Publication

Sample

Task

Task specifications

Results compared to C

Risk of Bias

Röijezon et al. [71]

INP 118

C 51

Unconstrained

Speed: As fast as possible

Direction: ROT

No significant differences

Moderate

Sarig Bahat et al. [74]

NP 33

C 22

Head aiming; Pointing

Speed: As fast as possible

Targets: Unpredictable

Directions: FLEX/EXT, ROT

Decreased in NP except for target in LROT

Moderate

Vikne et al. [80]

WAD 15

C 15

Unconstrained

Speed: Slow(S), Preferred (P), Max (MAX)

Direction: FLEX/EXT

No significant differences

Moderate

Sarig Bahat et al. [73]

NP 25

C 42

Head aiming; Pointing

Speed: As fast as possible

Targets: Unpredictable

Directions: FLEX/EXT, ROT

No significant differences

High

  1. C controls, EXT Extension, F8 Figure of eight, FLEX Flexion, INP idiopathic neck pain, MAX maximal, NP unclassified neck pain, P preferred, ROT Rotation, S slow, WAD whiplash associated disorder, ZZ Zig Zag