Fitts Law in People With Cerebral Palsy
Evaluation of Speed-accuracy Trade-off in a Computer Task in Individuals With Cerebral Palsy
調査の概要
詳細な説明
The software used in this study was "Fitts' Reciprocal Aiming Task v.1.0 (Horizontal)" developed by Okazaki, in the public domain and available on the Internet, which was performed on a Toshiba notebook®, model Satellite A60-S1561 System Unit, with the use of an external optical mouse, Fortrek® OM-302.
This instrument can be used to verify motor control through analysis of the speed and accuracy of movement, which can be determined through the log-linear relation between movement time and task difficulty using a mathematical equation, and analyzed by Fitts' law, which describes the relation between movement accuracy and speed, associated with target size and distance11. Thus, the task used in this study was composed of targets of different sizes, being that the smaller targets require more time to execute due to the necessity of increased accuracy and, if the distance between targets reduces, the speed of movement becomes greater and the accuracy decreases.
In relation to target size (W) and distance between targets (D), the equation log2 (2D/W) results in an index of difficulty (ID), where the higher the ID, the more difficult the task, a fact that necessitates greater movement time.
To evaluate the speed and accuracy, two different indices of difficulty were used in this study (ID2 and ID4). The difficulty level was increased by changing the width and distance between the bars. In addition, ID4 was used in two different ways (ID4a and ID4b), for which the distance between the bars and the width were different, but the ID was maintained.
3 Procedure and design The experiment was composed of three trials at each of the two IDs: 2 and 4 (ID 4 had two kinds of measurement - ID4a and ID4b), and the participants performed the tasks individually in a room, with only the evaluator present, seated on a chair (or their own wheelchair), which was adjusted in height according to the needs of the individual. A footrest was available, when necessary. The computer was placed on a table, and each participant was given instructions and presented with the task, in which the individual, after hearing an alarm from the computer, was required to click with an external mouse cursor on two parallel bars which were arranged vertically, intermittently, with the greatest speed and accuracy possible, for a period of 10 seconds, followed by a second alarm which indicated the end of the attempt.
Directly following the attempt, the total movement time was registered, by dividing the seconds obtained in each attempt by the number of "clicks" on targets. If more than two clicks were wrong, the individual repeated the task.
Procedure and design The experiment was composed of three trials at each of the two IDs: 2 and 4 (ID 4 had two kinds of measurement - ID4a and ID4b), and the participants performed the tasks individually in a room, with only the evaluator present, seated on a chair (or their own wheelchair), which was adjusted in height according to the needs of the individual. A footrest was available, when necessary. The computer was placed on a table, and each participant was given instructions and presented with the task, in which the individual, after hearing an alarm from the computer, was required to click with an external mouse cursor on two parallel bars which were arranged vertically, intermittently, with the greatest speed and accuracy possible, for a period of 10 seconds, followed by a second alarm which indicated the end of the attempt.
Directly following the attempt, the total movement time was registered, by dividing the seconds obtained in each attempt by the number of "clicks" on targets. If more than two clicks were wrong, the individual repeated the task.
研究の種類
入学 (実際)
段階
- 適用できない
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:
- medical diagnosis of CP;
- levels I to IV according to the GMFCS;
- levels I to III according to MACS.
Exclusion Criteria:
- presence of surgery or a chemical neuromuscular blockade in the upper limbs within six months prior to participation in the study;
- lack of comprehension of the experimental instructions.
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:非ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
---|---|
実験的:Cerebral Palsy group
Group with Cerebral Palsy that performed the Fitts law in a computer task
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Group with Cerebral Palsy that performed the Fitts law in a computer task
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アクティブコンパレータ:Control group
Group with typical development that performed the Fitts law in a computer task
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Group with typical development that performed the Fitts law in a computer task
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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 |
時間枠 |
---|---|
Motor control test by using a fitts law task in computational task
時間枠:one day
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one day
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協力者と研究者
スポンサー
捜査官
- 主任研究者:Carlos BM Monteiro, Ph.D.、University of Sao Paulo
出版物と役立つリンク
研究記録日
主要日程の研究
研究開始
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 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
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
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。
Cerebral Palsy groupの臨床試験
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University Hospital, GhentUniversity Ghent募集
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Centre hospitalier de l'Université de Montréal...University Health Network, Toronto; University of British Columbia; McGill University; University... と他の協力者募集
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University of HawaiiNational Institute on Minority Health and Health Disparities (NIMHD)完了
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Northeast Center for Rehabilitation and Brain InjuryProbed Medical USAわからない
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Amsterdam UMC, location VUmcRed Cross Hospital Beverwijk完了