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Table 2 Summary finding of included studies

From: The effectiveness of physiotherapy for patients with isolated cervical dystonia: an updated systematic review and meta-analysis

Author, year of publication

Study design

Patients (M,F)

Duration of CD (year, Mean ± SD)

Intervention (and its duration) for experimental group

Control

Outcome Measures

Follow-up

Result

Include in meta-analysis of PT versus no-PT on disease outcomes

Werner et al., 2019

Monocentric prospective interventional

18

(M = 3, F = 15)

7.5 (± 6.6)

BoNT + PT: 12 sessions of 45 min at ratio of 2x/week (30 min PT session and 15 min TENS application) for a total of 6 months

BoNT alone

Cervical ROM (ZEBRIS), QoL (SF-36), TWSTRS (total, severity, disability, and pain scale)

After 6 weeks (T1) and on the last day of the first phase (T2).

Significant improvement in TWSTRS severity, disability and pain measures after intervention

Yes

Van den Dool, 2019

RCT

72

(M = 30, F = 42)

12.7 (± 10.4)

BoNT + Specialized PT consisting of 30 min sessions of exercises with emphasis on motor training for 12 months and daily home exercises.

BoNT treatment

and regular PT 1x/week

TWSTRS (total, severity, disability, and pain scale), BDI, BAI, SF-36, CDQ-24

/

Both specialized PT and regular PT improved on the TWSTRS disability scale and general health over time.

No (Compared two type of PT)

Useros-Olmo et al., 2018

Case-control

27

(M = 5, F = 22)

Intervention 14,2 ± 9.5; control 11 ± 4.5

Four sessions of relaxation therapy of aquatic therapy (50 min) and autogenic training (15 min) at ratio of 1x/week with daily home exercises of autogenic training over 1 month.

No intervention

QoL (SF-36), TWSTRS (pain), VAS, BDI-II, state-trate anxiety (STAI)

/

Significant reduction in the PT group of pain, improved QoL with improved physical and mental health

No (not RCT)

Tassorelli et al., 2006

RCT

40

(M = 13, F:27)

6.9 ± 2.69

BoNT + PT

daily 60 to 90 min sessions specific PT of stretching, exercises and biofeedback training for 2 weeks.

BoNT alone

Tsui scale, TWSTRS (total and pain scale)

/

Significant reduction in disability scale and subjective pain scores, lower BoNT dose is needed.

Yes

Stanković et al., 2017

RCT

14

13.5 ± 6.4 months

BoNT + PT

The PT was given five times a week in the period of two weeks.

BoNT alone

TWSTRS (pain and disability), Tsui scale

6 months

PT combined with BoNT brought significant effect for pain, disability reduction.

No (Compared PT vs. PT with BoNT)

Smania et al., 2018

case series

4 (M = 1, F = 3)

21.2 months

30 PT sessions of one hour consisting of 20 min elongation techniques, 40 min of active postural reeducation at ratio of 4x/week during 6 weeks

1 h sessions of EMG biofeedback at ratio of 5x/week during 6 weeks

HRT, DQ, VAS

9 months.

Significant reduction of daily life disability and pain in both groups. Head-trunk alignment improved in both groups

No (not RCT)

Queiroz et al., 2012

Case-control

40

(M = 20, F = 20)

Median disease duration in intervention and control group is 9 (2.7–16) and 16 (6.5–17.5) respectively.

BoNT + PT sessions of 1h15 including motor learning exercise, stretching, active and passive mobilization of the cervical spine (1 h)/ and FES (15 min) for four weeks, five days a week, one hour and 15 min per session.

BoNT injection

TWSTRS (severity, disability, and pain) and QOL (SF-36)

/

Significant decrease of disease severity in both groups, PT group showed also a sig.decrease in pain, disability and improvement in physical and mental health

No (not RCT)

Pelosin et al., 2013

RCT

14

(M = 6, F = 8)

9.2 (± 6.3)

Kinesiotape on the dystonic SCM

14 days intervention with a new tape every 4days

Sham tape

VAS for pain, TWSTRS, somatosensory evoked potentials

/

45% reduction of pain after kinesiotape and no effect of tape on disease severity. 20% reduction of STDt in the affected body part

No (compared Kinesiotape vs. sham tape)

Hu et al., 2018

RCT

PT group were 8 (M = 4, F = 4), no PT group were 8 (F = 5, M = 3) and 10 controls

14.4 (± 10.9)

BoNT + PT including 1 session of deep massage, muscle elongation, stretching, instruction for home based exercises (stretching, ROM exercises) 15 min/day, 5x/week, for 6 weeks with weekly telephone calls

BoNT alone

TWSTRS (total, disability, and pain), VAS, SF-36

6 weeks

30% reduction of TWSTRS severity and pain in the PT group after intervention compared to the control group, changes in sensorimotor plasticity after BoNT with PT correlated with changes on TWSTRS whereas the control group showed no differences

No (reported the parameter of outcome differently)

Counsell et al., 2015

RCT

110 (M = 69, F = 85)

Intervention: 13,7 (± 9.3); control: 13,4 (± 7,4)

BoNT + Physiotherapy according to the Bleton technique 45 min sessions with home exercises, during 24 weeks at ratio of 1x/week

BoNT + standard PT care

TWSTRS, CDIP-58, Global impression of change, QoL (EQ-5D)

28 weeks

No difference between the improvement in the intervention or control group both interventions reduces disease severity and non-motor symptoms

No (compared two type of PT)

Castagna et al., 2019

Case-series

14

(M = 7, F = 7)

6 (± 7)

BoNT + PT 45 min sessions of passive mobilization (10 min) and Active sensorimotor exercises with augmented feedback (35 min), 18 at ratio of 3x/week

BoNT alone

TWSTRS, self-rating anxiety scale (SAS), BDI-II, and QoL (EQ-5D-5 L)

/

Total TWSTRS score was lower, no effect on anxiety, depression or quality of life

No (not RCT)

Boyce et al., 2013

RCT

20

(M = 6, F = 14)

10.2 (± 7.9)

8 PT sessions during 12 weeks, 30 min sessions of neck exercises, motor relearning and whole body relaxation with home exercises 4x/week

Whole body relaxation, with home exercise program

TWSTRS (total, disability, severity, and pain), CDQ-24, BDI-II, active cervical ROM measures

4 weeks

Significant reduction on TWSTRS, BDI and improvement of cervical ROM in both groups.

No (compared two type of PT)

Zetterberg et al., 2008

Case-series

6

(M = 4, F = 2)

/

PT for 4 week, 45 min sessions of stretching, endurance and strength exercises, muscle relaxation, postural orientation, 9x/week (2x/day except for 1 day)

None

CDQ-24, cervical dystonia postural orientation index (POI), Movement energy index (MEI), VAS, TWSTRS,

6 months

Significant improvement of pain, disease severity, disablity and QoL which remained after 6 months follow-up

No (not RCT)

Dec-Ćwiek et al., 2022

RCT

19 (M = 4, F = 15)

27.8 ± 12.4

BoNT + kinesiotape were performed for four consecutive weeks once per week.

BoNT +/- Sham taping

TWSTRS (Total, severity, disability, and pain scale) and CDQ-24

12 weeks therapy in each

Experimental therapy.

Kinesiotape had no additional effect on the disease severity of CD but might improve QoL.

No (compared Kinesiotape and sham tape