Focus of Attention in Individuals With Stroke
Focus of Attention Effects on Motor Performance and Learning in Individuals Post Stroke During Seated Lateral Weight Shifting: A Two-phase Feasibility Study
調査の概要
詳細な説明
This was a two phase feasibility study exploring appropriate management, setting, participants including inclusion and exclusion criteria, attrition rates, protocol, and retention. Outcome data for each stage were collected during baseline, acquisition, short-term, and long-term retention.
There were two primary objectives of this two phase feasibility study. The first was to uncover some potential short comings in research designs used in this area. The second was to explore the feasibility of a study in both the chronic and acute stroke populations in a rural community. Topics of feasibility include recruitment, retention, and specific inclusion and exclusion criteria. Extending the work by Muckel and Merholz, this feasibility study examined performance of individuals post stroke during a seated lateral weight shifting task and incorporated retention trials, quality of movement exploration, and bilateral weight shifting.
During Phase I, individuals in both groups sat unsupported on a hi-lo mat table which was adjusted so participants were sitting at 90 degrees hip and knee flexion with feet shoulder width apart. Tape marks were used to mark initial set up ensuring standardized positioning for each trial. Following baseline trials, all participants watched the same instructional video describing lateral weight shifting. The instructions included correct mechanics that should be used when weight shifting laterally with focus on correct form needed for the movement.
Testing included baseline, acquisition, short term retention (5 minutes later), and long-term retention (7-10 days later). Participants performed three trials of seated weight shifting to each side at all timepoints. During acquisition, the internal focus group was instructed to "shift your weight as much as possible towards your right or left hip without using your arms". The external focus group sat with targets one arm length away at shoulder height and were instructed to "shift your body weight as much as possible towards the blue/orange target without using your arms." During baseline and retention trials, adults were instructed to "lean as far as you can to the right/left without using your arms." During Phase II, the protocol was similar except 6 trials were performed for acquisition to potentially improve motor learning, which was not significant in Phase I per retention data. Other changes to the protocol included allowing participants to move their feet when weight-shifting. Instructions were also revised. The external focus group was told to "move your shoulder as close to the blue/orange target as possible", while the internal focus group was told to "shift your body weight as much as possible towards your right/left hip without using your arms."
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
-
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North Carolina
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Cullowhee、North Carolina、アメリカ、28723
- Western Carolina University
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- participants with history of stroke
- ability to sit statically without physical assistance
Exclusion Criteria:
- severe hemineglect (star cancellation test <44/54)
- inability to follow multistep commands
- orthopedic issues that limited their ability to weight shift including severe hip or back pain
- individuals with other neurologic conditions such as dementia
- individuals with contraversive pushing.
During the first arm (phase) of the study there were age matched healthy controls.
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：処理
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的：Focus of attention in individuals post chronic stroke during seated lateral weight shifting
Feasibility study
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Individuals were asked to laterally weight shift while seated with either internal focus or external focus instructions.
他の名前：
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実験的：Focus of attention in individuals post acute stroke during seated lateral weight shifting
Feasibility study
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Individuals were asked to laterally weight shift while seated with either internal focus or external focus instructions.
他の名前：
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Recruitment
時間枠：One year for each arm of the study.
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Percentage of participants recruited out of the estimated number needed by power analysis.
Power analyses revealed 42 participants were needed for 2X4 mixed model ANOVA 193 analysis, a=.05, power=.8,
with a medium effect size, f=.2.
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One year for each arm of the study.
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Retention
時間枠：One year for each arm of the study.
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Percentage of participants that completed all 4 timepoints, baseline, acquisition, short term, and long term retention out of those that completed baseline trials.
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One year for each arm of the study.
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Shoulder alignment during baseline to affected side
時間枠：baseline (prior to training)
|
Only used in arm 2 of the study. Angle measuring a line from acromion to acromion compared to a horizontal plumb line. This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. Participants shifted to both sides 6 times to each side during arm 2 of the study. Averages were used for data analysis. A 9.5" X 7.31" X 0.37" 4th generation iPad†, with a 9.7-inch retina display, was used to record videos of each trial. The iPad has a 1080p HD video and 1.2 MP photo camera with autofocus and a 2.4 aperture with video stabilization. From this footage, shoulder alignment was measured during seated lateral weight shifting using the Body Align Pro app‡, trademarked on Nov. 28, 2014. |
baseline (prior to training)
|
|
Shoulder alignment during baseline to unaffected side
時間枠：baseline (prior to training)
|
Only used in arm 2 of the study. Angle measuring a line from acromion to acromion compared to a horizontal plumb line. This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. Participants shifted to both sides 6 times to each side during arm 2 of the study. Averages were used for data analysis. A 9.5" X 7.31" X 0.37" 4th generation iPad†, with a 9.7-inch retina display, was used to record videos of each trial. The iPad has a 1080p HD video and 1.2 MP photo camera with autofocus and a 2.4 aperture with video stabilization. From this footage, shoulder alignment was measured during seated lateral weight shifting using the Body Align Pro app‡, trademarked on Nov. 28, 2014. |
baseline (prior to training)
|
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Shoulder alignment during acquisition or training to affected side
時間枠：acquisition (30 minutes) through study completion, average of one year.
|
Arm 2 only.
Angle measuring a line from acromion to acromion compared to a horizontal plumb line.
This is a repeated measure over 4 time points.
This measurement will occur during each lateral weight shift for all participants.
Pt's will shift to either side 3 times during baseline, short term and long term retention.
Participants shifted to both sides 6 times to each side during arm 2 of the study.
Averages were used for data analysis.Baseline measurements are taken, then participants are given a 2 minute demonstration of what to do during training.
The training or acquisition occurs right afterwards.A 9.5" X 7.31" X 0.37" 4th generation iPad†, with a 9.7-inch retina display, was used to record videos of each trial.
The iPad has a 1080p HD video and 1.2 MP photo camera with autofocus and a 2.4 aperture with video stabilization.
From this footage, shoulder alignment was measured during seated lateral weight shifting using the Body Align Pro app‡, trademarked on Nov. 28, 2014.
|
acquisition (30 minutes) through study completion, average of one year.
|
|
Shoulder alignment during acquisition or training to unaffected side
時間枠：acquisition (30 minutes) through study completion, average of one year.
|
Arm 2 only.
Angle measuring a line from acromion to acromion compared to a horizontal plumb line.
This is a repeated measure over 4 time points.
This measurement will occur during each lateral weight shift for all participants.
Pt's will shift to either side 3 times during baseline, short term and long term retention.
Participants shifted to both sides 6 times to each side during arm 2 of the study.
Averages were used for data analysis.
Baseline measurements are taken, then participants are given a 2 minute demonstration of what to do during training.
The training or acquisition occurs right afterwards.
A 9.5" X 7.31" X 0.37" 4th generation iPad†, with a 9.7-inch retina display, was used to record videos of each trial.
The iPad has a 1080p HD video and 1.2 MP photo camera with autofocus and a 2.4 aperture with video stabilization.
From this footage, shoulder alignment was measured during seated lateral weight shifting using the Body Align Pro app‡, trademarked on Nov. 28, 2014.
|
acquisition (30 minutes) through study completion, average of one year.
|
|
Shoulder alignment during short term retention to affected side
時間枠：short-term (5 minutes after training)
|
Only used in arm 2 of the study. Angle measuring a line from acromion to acromion compared to a horizontal plumb line. This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. Participants shifted to both sides 6 times to each side during arm 2 of the study. Averages were used for data analysis. A 9.5" X 7.31" X 0.37" 4th generation iPad†, with a 9.7-inch retina display, was used to record videos of each trial. The iPad has a 1080p HD video and 1.2 MP photo camera with autofocus and a 2.4 aperture with video stabilization. From this footage, shoulder alignment was measured during seated lateral weight shifting using the Body Align Pro app‡, trademarked on Nov. 28, 2014. |
short-term (5 minutes after training)
|
|
Shoulder alignment during short term retention to unaffected side
時間枠：short-term (5 minutes after training)
|
Only used in arm 2 of the study. Angle measuring a line from acromion to acromion compared to a horizontal plumb line. This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. Participants shifted to both sides 6 times to each side during arm 2 of the study. Averages were used for data analysis. A 9.5" X 7.31" X 0.37" 4th generation iPad†, with a 9.7-inch retina display, was used to record videos of each trial. The iPad has a 1080p HD video and 1.2 MP photo camera with autofocus and a 2.4 aperture with video stabilization. From this footage, shoulder alignment was measured during seated lateral weight shifting using the Body Align Pro app‡, trademarked on Nov. 28, 2014. |
short-term (5 minutes after training)
|
|
Shoulder alignment during long term retention to affected side
時間枠：long-term (7 days after training)
|
Only used in arm 2 of the study. Angle measuring a line from acromion to acromion compared to a horizontal plumb line. This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. Participants shifted to both sides 6 times to each side during arm 2 of the study. Averages were used for data analysis. A 9.5" X 7.31" X 0.37" 4th generation iPad†, with a 9.7-inch retina display, was used to record videos of each trial. The iPad has a 1080p HD video and 1.2 MP photo camera with autofocus and a 2.4 aperture with video stabilization. From this footage, shoulder alignment was measured during seated lateral weight shifting using the Body Align Pro app‡, trademarked on Nov. 28, 2014. |
long-term (7 days after training)
|
|
Shoulder alignment during long term retention to unaffected side
時間枠：long-term (7 days after training)
|
Only used in arm 2 of the study. Angle measuring a line from acromion to acromion compared to a horizontal plumb line. This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. Participants shifted to both sides 6 times to each side during arm 2 of the study. Averages were used for data analysis. A 9.5" X 7.31" X 0.37" 4th generation iPad†, with a 9.7-inch retina display, was used to record videos of each trial. The iPad has a 1080p HD video and 1.2 MP photo camera with autofocus and a 2.4 aperture with video stabilization. From this footage, shoulder alignment was measured during seated lateral weight shifting using the Body Align Pro app‡, trademarked on Nov. 28, 2014. |
long-term (7 days after training)
|
|
Seated lateral excursion during baseline to affected side
時間枠：baseline (prior to training)
|
Measure of how far individuals shifted their center of pressure laterally during each weight shift trial (cm). This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. In arm 1 participants shifted to both sides 3 times during the acquisition trials and 6 times to each side during arm 2 of the study. A 32X32 array BodiTrak* pressure mat with an 18.125 in x 18.125 in sensing area (1,024 sensors) was used to measure lateral excursion of center of pressure during each trial for both phases. The pressure mat has a 200 mmHg calibration range and up to 150 Hz sampling frame rate. |
baseline (prior to training)
|
|
Seated lateral excursion during baseline to unaffected side
時間枠：baseline (prior to training)
|
Measure of how far individuals shifted their center of pressure laterally during each weight shift trial (cm). This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. In arm 1 participants shifted to both sides 3 times during the acquisition trials and 6 times to each side during arm 2 of the study. A 32X32 array BodiTrak* pressure mat with an 18.125 in x 18.125 in sensing area (1,024 sensors) was used to measure lateral excursion of center of pressure during each trial for both phases. The pressure mat has a 200 mmHg calibration range and up to 150 Hz sampling frame rate. |
baseline (prior to training)
|
|
Seated lateral excursion during acquisition or training to affected side
時間枠：acquisition (30 minutes) through study completion, average of one year.
|
Measure of how far individuals shifted their center of pressure laterally during each weight shift trial (cm). This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. In arm 1 participants shifted to both sides 3 times during the acquisition trials and 6 times to each side during arm 2 of the study. Baseline measurements are taken, then participants are given a 2 minute demonstration of what to do during training. The training or acquisition occurs right after this demonstration and occurs for 30 minutes. A 32X32 array BodiTrak* pressure mat with an 18.125 in x 18.125 in sensing area (1,024 sensors) was used to measure lateral excursion of center of pressure during each trial for both phases. The pressure mat has a 200 mmHg calibration range and up to 150 Hz sampling frame rate. |
acquisition (30 minutes) through study completion, average of one year.
|
|
Seated lateral excursion during acquisition or training to unaffected side
時間枠：acquisition (30 minutes) through study completion, average of one year.
|
Measure of how far individuals shifted their center of pressure laterally during each weight shift trial (cm). This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. In arm 1 participants shifted to both sides 3 times during the acquisition trials and 6 times to each side during arm 2 of the study. Baseline measurements are taken, then participants are given a 2 minute demonstration of what to do during training. The training or acquisition occurs right after this demonstration and occurs for 30 minutes. A 32X32 array BodiTrak* pressure mat with an 18.125 in x 18.125 in sensing area (1,024 sensors) was used to measure lateral excursion of center of pressure during each trial for both phases. The pressure mat has a 200 mmHg calibration range and up to 150 Hz sampling frame rate. |
acquisition (30 minutes) through study completion, average of one year.
|
|
Seated lateral excursion during short-term retention to affected side
時間枠：short-term (5 minutes after training)
|
Measure of how far individuals shifted their center of pressure laterally during each weight shift trial (cm). This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. In arm 1 participants shifted to both sides 3 times during the acquisition trials and 6 times to each side during arm 2 of the study. A 32X32 array BodiTrak* pressure mat with an 18.125 in x 18.125 in sensing area (1,024 sensors) was used to measure lateral excursion of center of pressure during each trial for both phases. The pressure mat has a 200 mmHg calibration range and up to 150 Hz sampling frame rate. |
short-term (5 minutes after training)
|
|
Seated lateral excursion during short-term retention to unaffected side
時間枠：short-term (5 minutes after training)
|
Measure of how far individuals shifted their center of pressure laterally during each weight shift trial (cm). This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. In arm 1 participants shifted to both sides 3 times during the acquisition trials and 6 times to each side during arm 2 of the study. A 32X32 array BodiTrak* pressure mat with an 18.125 in x 18.125 in sensing area (1,024 sensors) was used to measure lateral excursion of center of pressure during each trial for both phases. The pressure mat has a 200 mmHg calibration range and up to 150 Hz sampling frame rate. |
short-term (5 minutes after training)
|
|
Seated lateral excursion during long-term retention to affected side
時間枠：long-term (7 days after training)
|
Measure of how far individuals shifted their center of pressure laterally during each weight shift trial (cm). This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. In arm 1 participants shifted to both sides 3 times during the acquisition trials and 6 times to each side during arm 2 of the study. A 32X32 array BodiTrak* pressure mat with an 18.125 in x 18.125 in sensing area (1,024 sensors) was used to measure lateral excursion of center of pressure during each trial for both phases. The pressure mat has a 200 mmHg calibration range and up to 150 Hz sampling frame rate. |
long-term (7 days after training)
|
|
Seated lateral excursion during long-term retention to unaffected side
時間枠：long-term (7 days after training)
|
Measure of how far individuals shifted their center of pressure laterally during each weight shift trial (cm). This is a repeated measure over 4 time points. This measurement will occur during each lateral weight shift for all participants. Pt's will shift to either side 3 times during baseline, short term and long term retention. In arm 1 participants shifted to both sides 3 times during the acquisition trials and 6 times to each side during arm 2 of the study. A 32X32 array BodiTrak* pressure mat with an 18.125 in x 18.125 in sensing area (1,024 sensors) was used to measure lateral excursion of center of pressure during each trial for both phases. The pressure mat has a 200 mmHg calibration range and up to 150 Hz sampling frame rate. |
long-term (7 days after training)
|
協力者と研究者
捜査官
- 主任研究者：Ashley W Hyatt, DPT、Western Carolina University
出版物と役立つリンク
一般刊行物
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研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
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