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HUMAN NEUROSCIENCE
ORIGINAL RESEARCH ARTICLE
published: 22 August 2014
doi: 10.3389/fnhum.2014.00662
A piano training program to improve manual dexterity and
upper extremity function in chronic stroke survivors
Myriam Villeneuve 1,2,Virginia Penhune3and Anouk Lamontagne 1,2*
1School of Physical and OccupationalTherapy, McGill University, Montreal, QC, Canada
2Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital, Research Site of the Montreal Center for Interdisciplinary Research in Rehabilitation (CRIR),
Laval, QC, Canada
3Laboratory for Motor Learning and Neural Plasticity, Department of Psychology, Concordia University, Montreal, QC, Canada
Edited by:
Rachael D. Seidler, University of
Michigan, USA
Reviewed by:
Patrick Ragert, Max Planck Institute
for Human Cognitive and Brain
Sciences Leipzig, Germany
Eckart Altenmüller, University of
Music and Drama Hannover, Germany
*Correspondence:
Anouk Lamontagne, Feil and Oberfeld
Research Centre, Jewish
Rehabilitation Hospital, McGill
University, 3205 Place
Alton-Goldbloom, Laval, QC H7V 1R2,
Canada
e-mail: anouk.lamontagne@mcgill.ca
Objective: Music-supported therapy was shown to induce improvements in motor skills
in stroke survivors. Whether all stroke individuals respond similarly to the intervention and
whether gains can be maintained over time remain unknown.We estimated the immediate
and retention effects of a piano training program on upper extremity function in persons
with chronic stroke.
Methods: Thirteen stroke participants engaged in a 3-week piano training comprising
supervised sessions (9 ×60 min) and home practice. Fine and gross manual dexterity,
movement coordination, and functional use of the upper extremity were assessed at
baseline, pre-intervention, post-intervention, and at a 3-week follow-up.
Results: Significant improvements were observed for all outcomes at post-intervention
and follow-up compared to pre-intervention scores. Larger magnitudes of change in man-
ual dexterity and functional use of the upper extremity were associated with higher initial
levels of motor recovery.
Conclusion: Piano training can result in sustainable improvements in upper extremity func-
tion in chronic stroke survivors. Individuals with a higher initial level of motor recovery at
baseline appear to benefit the most from this intervention.
Keywords: cerebrovascular accident, hand, paresis, learning, music, rehabilitation
INTRODUCTION
Most stroke survivors experience upper extremity impairments
(Hendricks et al., 2002) that can result in persistent activity and
participation limitations. Existing approaches for upper extrem-
ity rehabilitation have been shown to yield modest to moderate
improvements (Van Peppen et al., 2004), possibly due to insuffi-
cient training intensity and treatment adherence. Current litera-
ture on motor learning and recovery indicates that interventions
should be meaningful, task-specific, tailored to the person’s capac-
ity and interests, and provide sufficient repetition and challenge
to induce training effects (Van Peppen et al., 2004;Hubbard et al.,
2009). Rehabilitation interventions can further take advantage of
multi-sensory feedback to provide knowledge of results and/or
performance (Cirstea and Levin, 2007).
Music-supported therapy (MST) uses a music-learning par-
adigm to support motor rehabilitation. It is hypothesized that
auditory feedback may facilitate learning and performance and
that the musical context makes the therapy more engaging and
rewarding as compared to conventional approaches. MST was
shown to yield improvements in manual dexterity in both acute
and chronic stroke survivors (Altenmuller et al., 2009;Amengual
Abbreviations: BBT, Box and Block Test; CMSA,Chedoke McMaster Stroke Assess-
ment; FTN, Finger to Nose Test; FTT, Finger Tapping Test; Jebsen, Jebsen Hand
Function Test; MST, Music-supported Therapy; NHPT, Nine Hole Peg Test.
et al., 2013). Electrophysiological measures further demonstrated
that MST may build on auditory–motor coupling mechanisms
to drive cortical facilitation and brain plasticity (Amengual et al.,
2013). Despite the potential of MST for upper extremity reha-
bilitation, previous studies have not tested whether gains can be
maintained on the longer-term. Furthermore, as stroke survivors
present with a range of severity, there is a need to determine who
best respond to this intervention. Finally, existing MST programs
consist of mixed-instrument protocols (piano and drum pads)
that require daily supervised sessions (Altenmuller et al., 2009;
Amengual et al., 2013). Such resource intensive protocols may be
difficult to implement in the clinical setting or at home. Existing
protocols also lack details on training parameters and criteria for
progression.
In the present study, we have developed an individually tailored
piano training program that combines structured and supervised
training sessions with home practice. The specific objectives of
this study were to estimate the immediate and retention effects
of a 3-week piano training program on manual dexterity, finger
movement coordination,and functional use of upper extremity in
chronic stroke survivors and to establish the relationship between
the participants’ characteristics and intervention outcomes. We
hypothesized that MST improves upper extremity function and
piano-related outcomes. We also hypothesized that participants
may respond differently to the intervention depending on their
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Villeneuve et al. Piano playing after stroke
clinical profile, including their age, chronicity, and initial level of
motor recovery.
MATERIALS AND METHODS
PARTICIPANTS
A convenience sample of 13 chronic stroke survivors was recruited
among discharged patients of 2 rehabilitation centers in the Mon-
treal area. Inclusion criteria were: (1) first supratentorial chronic
stroke (>6 months) in the middle cerebral artery territory con-
firmed by CT scan or magnetic resonance imaging; (2) a motor
deficit of the paretic upper extremity but some capacity for active
wrist and finger movements [scores of 3–6 out of 7 on the arm and
hand components of the Chedoke McMaster Stroke Assessment
(CMSA)] (Gowland et al., 1993;Hubbard et al., 2009) and; (3)
corrected to normal vision. Participants were excluded if having
moderate to severe cognitive deficits (scores ≤23 on the Montreal
Cognitive Assessment) (Nasreddine et al.,2005), visual field defect
(Goldmann perimetry), or visuospatial neglect (Bell’s test), if still
receiving therapy for the upper extremity or if having another
condition interfering with upper extremity movements. Individ-
uals with professional musical experience and/or more than 1 h
per week of practice of any musical instrument during the past
10 years were not included in the study. Note that two participants
were found a posteriori to have a lesion that involved the brainstem
and the cerebellum. The study was approved by the Institutional
Ethics Committee and written informed consent was obtained
from each participant.
GENERAL PROCEDURE
Participants were assessed on clinical outcomes at baseline
(week0), pre-intervention (week3), post-intervention (week6), and
at follow-up (week9). Training sessions and evaluations were per-
formed by the same therapist. The intervention consisted of three
individual 1-h sessions per week for three consecutive weeks for a
total of nine sessions. Piano performance measures were collected
at every session. Supervised sessions were complemented with a
biweekly home program (30 min/session).
Musical pieces, created with Harmony Assistant™(Myriad,
Toulouse), involved all five digits of the paretic hand. Whether
played with the right or left hand, they involved the same num-
ber of finger repetitions and similar finger sequences. Pieces
were composed by an experienced musician and were designed
to be musically pleasant based on simple harmonic rules of
composition as well as of relatively short duration and easy to
remember (Figure 1). Musical pieces were displayed with Syn-
thesia™(Synthesia LLC), a software program adapted for peo-
ple with no music reading abilities. A visual display cued the
sequence of key presses required to produce each melody by
showing a blue dot falling from the upper part of the screen
down to the correct key on a virtual keyboard (Figure 2). After
each cue, the program paused until the participant pressed the
correct key before moving on. During the supervised train-
ing sessions, participants played on a touch sensitive Yamaha
P-155™ piano keyboard (Yamaha). They received feedback on
their performance through Synthesia and through the therapist
who provided verbal feedback on the quality of movement and
compensatory strategies. Home piano exercises were executed
on a roll-up flexible piano (Hand Roll Piano, 61K™), without
Synthesia.
INTERVENTION
Nine musical pieces were introduced in an order of increasing
difficulty: level 1 involved movements of consecutive fingers [e.g.,
digit 1–2–3–4–5]; level 2 involved third, fourth, and fifth inter-
vals or movements of non-consecutive fingers [e.g., 1–3–5–2–4]
and; level 3 involved chords, that is two fingers played at the same
time. Within each level, three musical pieces that involved an
increasing number of key presses and changes in melodic direction
were introduced (Table 1). In addition, the speed of execution or
tempo increased within each musical piece: participants started
at a tempo of 30 beats per minute (bpm) and once reaching
≥80% accuracy [1−(#errors/#key presses) ×100] on three con-
secutive trials, the tempo was increased by steps of 10% until
reaching 60 bpm. After the latter tempo was reached, the next
musical piece was introduced. During the home practice sessions,
participants were asked to reproduce short digit sequences on the
roll-up piano. These sequences comprised short excerpts of the
same musical pieces practiced during the supervised sessions and
consisted of 30 written exercises where all 5 fingers were repre-
sented as a number (1 =thumb, 5 =pinky). Participants reported
on their practice duration and content in a logbook after each
practice session.
OUTCOME MEASURES
Piano performance measures included the number of errors
(incorrect or early key presses) and duration of the musical pieces
recorded with Synthesia as well as the total number of pieces com-
pleted after the nine sessions. The following clinical measures were
also collected at baseline, pre- and post-intervention, and follow-
up. The Box and Block Test (BBT) and Nine Hole Peg Test (NHPT)
were used to evaluate gross and fine manual dexterity, respectively.
The functional use of the upper extremity was assessed with the
six-item version of the Jebsen Hand Function Test (Jebsen). The
Finger to Nose Test (FTN) and Finger Tapping Test (FTT) were
chosen as measures of arm and finger movement coordination,
respectively.
At post-intervention, feedback was collected using a custom-
designed questionnaire. The questionnaire included questions
where participants rated their interest in the structured piano ses-
sions, the home practice exercises, and the musical pieces using a
numerical rating scale (score of 0 =not interesting and 10 =very
interesting). Open-ended questions further investigated whether
participants had experienced adverse or undesirable effects during
the intervention, and whether they had observed changes in upper
extremity function after the training. Any additional written and
verbal comments were collected.
DATA AND STATISTICAL ANALYSIS
We conducted a linear mixed model analysis for repeated mea-
sures with autoregressive covariance structure, while controlling
for baseline measurements (week0), with time [pre (week3), post
(week6), and follow-up (week9)] as a within-subject factor to
assess the effect of the intervention on the clinical measures.
Post hoc pairwise comparisons were used to identify differences
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Villeneuve et al. Piano playing after stroke
FIGURE 2 | (A) Structured training session setting; (B) screen shot of Synthesia Musical Instrument Digital Interface (MIDI) piano program; (C) Roll-up flexible
piano.
between measurement time-points. Correlations were carried out
between change scores on the clinical measures and characteris-
tics of the participants at baseline [age, time since stroke, motor
recovery (CMSA), and manual dexterity (BBT)]. Pearson corre-
lation coefficients were used for all outcomes, except for the level
of motor recovery for which Spearman’s rank correlation coef-
ficients were used. Statistical analyses were performed in SPSS
V20. The level of significance was set to p<0.05. For each family
of outcome measures, we controlled for family-wise error using
modified Bonferroni correction.
RESULTS
Participants’ characteristics are presented in Table 2. Based on
the arm and hand components of the CMSA, participants were
classified as mildly affected (score of 6), moderately affected (scores
of 4 or 5), or severely affected (score of 3). Seven participants suf-
fered from a subcortical stroke, four had a cortical stroke, while
two participants were found post-priori to have pontine or cere-
bellar lesions. Six participants had a right hemisphere lesion, six
had a left lesion, and one participant showed bilateral lesions. Out
of the 13 participants, only 5 had prior musical training, which
included 1–5 years of non-professional piano experience before
the age of 18, with the exception of one participant (#11) who
played occasionally (<1 h/week) in the 2 years preceding stroke
onset but had no formal musical training. Participants were free
of cognitive deficits as indicated by MoCA scores ranging from
28 to 30. All were living in the community and average school
attendance was 14 ±3.7 years (mean ±1 SD).
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Villeneuve et al. Piano playing after stroke
All participants completed the nine training sessions over
3 weeks, except participants #3 and #6 who, due to personal
constraints, completed the program over 4weeks. Two to nine
musical pieces were completed, with some participants reach-
ing level 1 (n=4) and others reaching level 2 (n=5) and level
3(n=4) at post-intervention (Table 3). Each piece was prac-
ticed on average 25 times before reaching 80% accuracy at
60 bpm. At 60 bpm, average durations of musical pieces ranged
Table 1 | Musical piece’s progression.
Song # Piece
duration (s)a
Number of
notes
Number of
changes in
melodic
direction
LEVEL 1: CONSECUTIVE NOTES
1 32 52 11
2 38 69 32
3 48 87 38
LEVEL 2: INTERVALS
4 32 40 18
5 32 59 34
6 48 90 40
LEVEL 3: CHORDS
7 32 53 16
8 32 82 26
9 48 136 31
aPiece duration at 60 bpm.
from 32 to 48 s. Mean home practice time was 28 min/session,
with seven participants meeting/exceeding practice time
requirement. All participants performed the home exercises
independently.
Participants completed all the evaluations. Some, however,
were unable to complete specific tests [NHPT (n=4), FTN
(n=1), and Jebsen (n=1)] at any of the evaluation time-
points due to their low level of motor recovery. No significant
differences were found between baseline and pre-intervention
scores for any of the clinical tests, including the BBT, NHPT,
FTN, FTT, and Jebsen (t-tests, p>0.05). The linear mixed
model showed significant effects of the intervention (p<0.0001)
on the BBT [F(2,24) =38.70], NHPT [F(2,16) =17.50], FTN
[F(2,22) =101.59], FTT [F(2,24) =14.74], and the Jebsen
[F(2,21) =24.02]. Post hoc analyses revealed that scores for all
clinical outcomes were significantly higher at post-intervention
compared to pre-intervention (p<0.0001), while there was no
significant difference between post-intervention and follow-up
(p>0.5).
Although every participant showed improvements on all clini-
cal tests, a large variability in initial scores as well as change scores
was observed across participants (Table 3;Figure 3). In general,
larger changes on the BBT were observed in the mildly affected
participants, whereas larger changes on the NHPT and Jebsen
were seen in the moderately and/or severely affected participants.
Among the seven participants classified as “mildly affected,” many
scored within the norms (mean ±1 SD) at post-intervention on
the BBT (n=2), NHPT (n=5), and on all subtests of the Jeb-
sen (n=6) (see norms, Mathiowetz et al., 1985;Hackel et al.,
1992;Oxford Grice et al., 2003). None of these participants scored
within the norms prior to the intervention.
Table 2 | Participant characteristics at baseline.
Participant Age Gender Lesion localization Etiology Time since
stroke
CMSA
arm/hand
Spasticity
(MAS)
Musical
experience
MoCA
score
1 62 F Right basal ganglia I 118 3/3 3 5 30
2 71 F Left pontine medullary I 112 3/3 3 0 30
3 52 M Right basal ganglia I 40 3/3 3 1 30
4 54 M Bilateral cerebellum (L >R) and left
thalamus
I 14 4/4 0 0 30
5 49 M Left sub-arachnoids and left sylvian
fissure
H 32 5/4 1 0 30
6 41 M Right frontal cortex, right basal ganglia,
right head of caudate, and right corona
radiata
I 44 5/4 2 0 30
7 75 M Left fronto-parietal region I 18 6/6 0 0 30
8 75 M Right thalamus and internal capsule H 6 6/6 0 0 29
9 74 M Left thalamus I 12 6/6 0 0 29
10 79 F Right sylvian para-central gyrus I 15 6/6 0 1 30
11 60 F Right intraparenchymal frontal region H 61 6/6 0 2 30
12 32 F Left intraventricular and left thalamus H 16 6/6 0 1 28
13 57 M Left posterior limb of internal capsule I 64 6/6 0 0 30
Age (years), gender (male/female), etiology (hemorrhagic/ischemic), time since stroke (months), CMSA =Chedoke McMaster StrokeAssessment (arm/hand scores,
max =7), MAS =Modified Ashworth Scale (max=5), musical experience (years), MoCA =Montreal Cognitive AssessmentTest (max =30).
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Villeneuve et al. Piano playing after stroke
Table 3 | Changes on motor function tests post- vs. pre-intervention.
Participants BBT NHPT FTN Index FTT Jebsen Home Practice Training progression
∆%∆%∆%∆%∆% Time (min) # songs/level
SEVERELY AFFECTED
1 4 200 Ø Ø 5 100.0 5 100.0 Ø Ø 170 2/1
2 4 33.3 Ø Ø Ø Ø 6 100.0 −60.9 −12.1 180c2/1
3 7a50 Ø Ø 5 55.6 5 50.0 −63.2 −31.0 185c2/1
MODERATELY AFFECTED
4 3 25 Ø Ø 1 14.3 8 47.1 −63.8 −31.5 50 5/2
5 6a27.3 −17.7 −15.0 4 36.4 4 33.3 −61.9 −44.5 60 7/3
6 4 14.3 −36.6a−29.6 7 58.3 2 9.1 −39.7 −43.3 135 5/2
MILDLY AFFECTED
7 11a30.6 −19.4 −40.3 4 25.0 1 3.6 −17.5b−27.6 227c5/2
8 6a14.6 −11.9b−32.2 5 31.3 2 6.3 −26.5 −31.8 155 5/2
9 10a28.6 −7.4 −14.0 5 29.4 4 9.8 −9.5b−18.7 140 6/2
10 7a16.3 −9.6b−28.3 5 35.7 2 3.6 −12.1b−25.4 195c6/2
11 5a9.3 −7.1b−25.8 6 23.8 6 9.4 −20.0b−41.6 245c9/3
12 12ab 21.1 −7.1b−29.2 3 12.5 21 46.7 −3.0b−11.6 225c9/3
13 17ab 32.1 −2.7ab −11.1 7 36.8 7 17.1 −10.6a−31.1 315c8/3
Mean (sd) 7.4a(4.1) 38.6 (49.6) −13.3 (10.2) −25.1 (9.7) 4.7 (1.6) 35.3 (25.2) 5.6 (5.1) 33.5 (34.2) −32.4 (24.0) −27.1 (12.9) 175.5 (72.1) 5.5 (2.4)
∆, Change between pre- and post-intervention; %, percent change between pre- and post-intervention; Ø, participant unable to perform the test;
aparticipant reached the smallest real difference (SRD) score;
bparticipant reached the norms for his/her age group;
cParticipant practiced at least 180min at home (2 min ×30 min).
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Villeneuve et al. Piano playing after stroke
FIGURE 3 | Individual performances for all participants [severely affected (gray
solid line), moderately affected (black dashed line), and mildly affected (black
solid line)] on the (A) Box and BlockTest (BBT); (B) Nine Hole PegTest (NHPT)
and; (C) Jebsen Hand FunctionTest (Jebsen) at baseline, pre-intervention,
post-intervention, and follow-up.The area between the vertical doted lines
represents the 3-week intervention period. In (C), the y-axis is discontinued
for a better overview of results. Note that four participants could not complete
the NHPT and one could not complete the Jebsen (see text for more details).
No significant relationships were observed between change
scores on the clinical measures as a result of the intervention
(absolute changes between post vs. pre-intervention on the BBT,
NHPT, FTN, FTT, and Jebsen) and variables such as age and time
since stroke (r=0.01–0.27, p≥0.3). Participants with larger base-
line scores on the BBT showed larger change scores on the BBT
and Jebsen (r=0.64–0.70, p<0.01), but not on other clinical tests
(NHPT, FTN, and FTT,p>0.1). Participants with higher scores on
the hand component of CMSA also showed larger change scores on
the BBT (r=0.54, p<0.05) and the Jebsen (r=0.63, p<0.01),
but no significant correlations were observed for other clinical
tests (p>0.5). Better scores on the BBT, NHPT, FTN, and FTT
at baseline were associated with longer home practice durations
(r=0.5–0.7, p>0.05).
In response to the feedback questionnaire, participants rated
their interest in the supervised training session between 8 and
10, while their interest in the musical pieces ranged between 7
and 9. Their interest in the home program received scores that
ranged between 2 and 10. Answers to the open-ended questions
revealed that five participants considered the home training to be
less interesting and not as motivating compared to the supervised
sessions due to the lack of feedback received during playing. Six
participants reported that the training was good for their mood
and motivation to engage in upper extremity exercises, and 11
participants reported that they observed a change in upper extrem-
ity function, expressed as an increased mobility of their paretic
hand, improvement in fluidity of movements as well as increased
coordination and dexterity. More concretely, three participants
mentioned that they could pick up small objects more easily and
that they dropped objects less often when using the paretic hand,
while two participants reported improvements in writing and typ-
ing skills. Three participants reported adverse or negative effects,
including shoulder stiffness (n=1), fatigue (n=1),and mild hand
numbness (n=1), which resolved either immediately or within
the hour following the session. Finally, five participants expressed
the desire to continue piano lessons after their participation in the
study; reasons mentioned included the sense of achievement and
success (n=2) and the perceived change in motor function and
desire to experience further recovery (n=3).
DISCUSSION
This study examined, for the first time, the short-term and reten-
tion effects of a 3-week piano training program that included
supervised sessions and home practice. For this purpose, we have
developed a structured program with graded levels and clear cri-
teria for progression, which is amenable to use in clinical setting
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Villeneuve et al. Piano playing after stroke
by rehabilitation therapists who do not have specialized musi-
cal training. Gains in upper extremity function were observed
in all participants, with larger improvements being observed in
those with higher levels of motor recovery at baseline. Gains were
maintained 3 weeks after the end of intervention, suggesting that
the intervention results in longer-term improvements in upper
extremity function.
Our results are consistent with previous research in acute
stroke where improvements in finger movement coordination and
manual dexterity were reported as a result of a 3-week mixed-
instrument intervention (Altenmuller et al., 2009). The fact that
fine and gross manual dexterity was improved in chronic stroke
survivors in the context of our study may be attributable to the
specificity of the piano intervention, which involved repeated prac-
tice of dissociated finger movements while promoting speed and
movement accuracy. Other contributing factors include the rapid
establishment of auditory–motor coactivation induced by musical
training (Altenmuller et al., 2009;Amengual et al., 2013;Grau-
Sanchez et al., 2013) and the melody that is a powerful source of
auditory feedback providing instantaneous knowledge of move-
ment timing and accuracy. Hence, both the temporal and spatial
features of finger movements can be trained, leading to enhanced
movement coordination.
In the present study, participants also experienced an enhance-
ment in the functional use of the paretic upper extremity as a result
of the intervention, indicating that gains were transferred to func-
tional tasks of daily living and that finger movement coordination
training could be a key component of upper extremity rehabilita-
tion. The piano intervention, which yielded a mean increase of 7.4
blocks on the BBT, may compare advantageously with other ther-
apies such as constraint-induced movement therapy where gains
of 4–4.5 blocks were reported after intensive arm restriction (3 h
to 90% of waking hours for 2–4 weeks) (Leung et al., 2009;Siebers
et al., 2010). Since the piano intervention relies on user-friendly
and commercially available equipment, it also has the potential to
be self-managed and pursued beyond the usual rehabilitation time
frame.
A large variability in terms of initial scores and change scores
on the different clinical outcomes was observed across partici-
pants. Given this variability, individual responses were examined
with regard to smallest real differences, which are available for
the BBT (+6 blocks) and the NHPT (−32.8 s) (Chen et al., 2009);
eight participants exceeded the smallest real difference for the BBT
(Table 3). Although only one participant reached the smallest real
difference for the NHPT, it was observed that five participants
(mildly affected) scored within norms at post-intervention. Sim-
ilarly, six mildly affected participants attained the norms on the
Jebsen. Participants with higher scores on the CMSA and BBT
at baseline were also the ones who showed larger gains on most
outcome measures, along with longer home practice durations. It
cannot be excluded, however, that some of the clinical tests used
in this study might not be sensitive enough to detect changes in
individuals with more severe deficits in motor recovery. In fact,
the NHPT proved to be too difficult to use in four participants
who were severely or moderately affected, such that changes in
fine manual dexterity that might have occurred in these indi-
viduals could not be assessed. Changes in FTN and FFT scores,
however, reveal that these same participants improved in finger
and arm movement coordination, in many instances to an extent
that was comparable to changes observed in mildly affected partici-
pants. Taken together, these observations suggest that a significant
proportion of the participants showed a true change in manual
dexterity and upper extremity, and that the piano intervention
has the potential to allow participants with mild impairments in
motor function to improve their performance up to a level that is
within normal limits. While mildly affected participants showed
the largest improvements as a result of the intervention, results
also show that all participants were able to complete the program,
suggesting that a piano-specific intervention is feasible for chronic
stroke survivors with different levels of motor recovery, including
patients who only present some capacity for active wrist and finger
movements (CMSA score of 3) (Gowland et al., 1993).
The location (cortical vs. subcortical) and side of stroke are
often important factors to consider in assessing intervention out-
comes. Participants investigated in this study predominantly suf-
fered from subcortical stroke, with an equal distribution of left-
and right-sided lesions. It was not possible to conduct statistical
analysis on both subgroups due to the small number of partici-
pants. However, we can observe that six out of seven participants
presenting a subcortical lesion reached the smallest real difference
on the BBT, as did three out of four in the cortical subgroup. Sim-
ilarly, we can observe that five out of six participants with a left
lesion reached the smallest real difference on the BBT, as com-
pared to four out of six participants with a right lesion. Although
these observations do not suggest a clear difference between the
type and side of the lesion, further investigations are needed with
a larger sample size to validate these observations.
Information from the participant feedback questionnaire indi-
cated that participants enjoyed the training program and felt
motivated, especially during the supervised training sessions. All
participants were able to complete the 60-min sessions while keep-
ing a high level of motivation and attention for the entire practice
time. We believe that the music-like nature of the pieces was an
important factor that motivated participants to engage in training
that requires many repetitions. We also believe that the “gaming”
nature of the training (with scores and levels) added a sense of
success and an awareness of improvement that made the interven-
tion gratifying. Some participants rated their satisfaction with the
home practice as lower due to the absence of feedback. However,
most met or exceeded the requested practice time. Some partici-
pants even expressed the desire to pursue the piano lessons after
the intervention. The sense of achievement and success, the per-
ception of being engaged in a socially valued leisure activity, and
the observation of improvements in upper extremity function are
factors that may encourage stroke survivors to continue piano
training on the long term, such that gains can be maintained and
possibly further improved. Although MST should involve minimal
risks or disadvantages, these had never been reported in previous
studies. In the present study, minor unwanted effects were reported
by some participants, including temporary fatigue and arm stiff-
ness/numbness. While these unwanted effects resolved within the
hour following the intervention, it may be advised to closely mon-
itor the level of exertion and other factors such as stiffness or pain
in future intervention studies.
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Villeneuve et al. Piano playing after stroke
Main limitations of this study include a small sample size and
inherent limitations of single subject designs. This work, how-
ever, was an essential step toward determining the feasibility of
the intervention in post-stroke participants having different levels
of motor recovery, before larger clinical trial can be undertaken.
Although we did not have a no-treatment or standard treatment
control group, this limitation was partially addressed with the use
of an AABA design, controlling for the passage of time and ensur-
ing that participants were stable prior to the beginning of the
intervention. However, whether the improvements are specifically
related to the musical aspect of the intervention cannot be deter-
mined. Nevertheless, this preliminary study provides evidence that
an intervention providing musical feedback that combines inten-
sive practice and high motivation can be beneficial for chronic
stroke survivors. A future larger study will also allow us to com-
pare the intervention to a standard treatment. Future directions for
research include the investigation of a larger pool of participants,
possibly with longer training duration and a longer-follow-up.
CONCLUSION
This study provides the first evidence that a piano training inter-
vention combined to home practice can lead to improvements in
manual dexterity, finger movement coordination, and functional
use of the upper extremity that persist 3 weeks after the interven-
tion. In addition to representing a socially valued and enjoyable
activity, piano training has the potential to be self-managed and
to enable people with chronic stroke to pursue upper extremity
exercises beyond the usual rehabilitation time frame.
ACKNOWLEDGMENTS
We are thankful to the participants involved in this study. This
project was supported by the Foundation of the Jewish Rehabilita-
tion Hospital. Myriam Villeneuve was the recipient of a scholarship
from the School of Physical and Occupational Therapy, McGill
University. Anouk Lamontagne holds a Junior-2 Salary Award
from FRSQ.
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Conflict of Interest Statement: The authors declare that the researchwas conducted
in the absence of any commercial or financial relationships that could be construed
as a potential conflict of interest.
Received: 17 June 2014; accepted: 08 August 2014; published online: 22 August 2014.
Citation: Villeneuve M, Penhune V and Lamontagne A (2014) A piano training pro-
gram to improve manual dexterity and upper extremity function in chronic stroke
survivors. Front. Hum. Neurosci. 8:662. doi: 10.3389/fnhum.2014.00662
This article was submitted to the journal Frontiers in Human Neuroscience.
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