Combining Motor Imagery With Action Observation Does Not Lead to a Greater Autonomic Response Than Motor Imagery Alone During Simple and Functional Movements: a Randomized Controlled Trial.
調査の概要
詳細な説明
Motor Imagery (MI) is defined as a dynamic mental process that involves the representation of an action, in an internal way, without its actual motor execution. The Action Observation (AO) evokes an internal, real-time motor simulation of the movements that the observer is perceiving visually. Both mental processes trigger the activation of the neurocognitive mechanisms that underlie the planning and execution of voluntary movements in a manner that resembles how the action is performed in a real manner.
Both observation and imagination share a great number of common mental processes based primarily on sensory perception, and the information stored by memory systems. The activation of the motor command during a mental practice does not induce an active movement probably due to an inhibitory mechanism in the primary motor cortex on the descending corticospinal tract pathways. However, this inhibition is not complete, for it is well known that the training of mental practice involves a component of the autonomic nervous system (ANS).
It has been shown that both MI and AO lead to changes in the ANS that cause excitatory sympathetic responses, although the neurophysiological bases remain uncertain and are still based on hypotheses. The functional relations between both neurocognitive processes and the sympathetic-excitatory nervous system (SNS) could be based on a preparation phase in which, the activation of the SNS, happens to a near effort and, therefore, to a close energy expenditure in physiological processes (i.e., cardiorespiratory adaptationse) which will take place in order to face said metabolic changes produced by the voluntary movement itself. In addition, several hypotheses have been described regarding the notion that the SNS not only has the quantitative objective of providing energy to the muscle effectors, but that it also qualitatively and specifically designs and adapts the parameters on demand in an attempt to save the energy provided for each precise motor execution.
Taking into account that both MI and AO cause sympathetic-excitatory changes that induce an increase in heart rate, blood pressure, respiratory rate, electrodermal activity , our hypothesis is that the combination of MI and AO induces an autonomic sympathetic-excitatory shift greater than MI does in isolation. Therefore, the main objective of this study was to compare the results obtained from intervention groups on the subject of the activation of the SNS in a program that combined MI with AO, in contrast to an isolated MI program on the one hand in asymptomatic subjects and in the other hand in patients with chronic low back pain.. The secondary objective of the present study was to explore whether there is any relationship between the sympathetic-excitatory response and the ability to generate motor imagery, the mental chronometry, and the level of physical activity.
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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Madrid、スペイン、28023
- CSEU La Salle
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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 asymptomatic subjects:
- Age between 18 and 60
- Healthy and with no pain subjects
Inclusion Criteria patients with chronic low back pain:
- Low back pain for at least the prior 3 months
- Low back pain of nonspecific nature
- Age between 18 and 60
- Low back pain for at least 10 days per month
- Intensity of pain of between 3 and 10 on the Visual Analogue Scale
Exclusion Criteria asymptomatic subjects:
- Any cognitive impairment that hindered viewing of audiovisual material.
- Difficulty understanding or communicating.
- Presence of systemic pathology, Central Nervous System or rheumatic disease.
- Inadequate understanding of the Spanish language to follow instructions for measuring and treatment.
- Collaboration of pregnant women.
- Underage subjects
- Subjects with pain at the time of the study.
Exclusion Criteria patients with chronic low back pain:
- Any cognitive impairment that hindered viewing of audiovisual material.
- Difficulty understanding or communicating.
- Presence of systemic pathology, Central Nervous System or rheumatic disease.
- Inadequate understanding of the Spanish language to follow instructions for measuring and treatment.
- Collaboration of pregnant women.
- Underage subjects
- Having undergone back surgery
- Specific spinal pathology
- Recent trauma
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:基礎科学
- 割り当て: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 |
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実験的:Experimental 1
Motor Imagery
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Two consecutive 30 seconds imagery tasks were performed, both based on two movements that are recorded in the Revised Movement Imagery Questionnaire (MIQ-R).
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実験的:Experimental 2
Action Observation
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Two consecutive 30 seconds imagery tasks were performed, both based on two movements that are recorded in the Revised Movement Imagery Questionnaire (MIQ-R).
Before the subjects performed the mental MI practice, they were presented with a 30 seconds video that displayed the task that they ought to imagine later.
A video was played prior to the first practice of imagination and after the second mental practice, a second video was shown.
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介入なし:対照群
介入なし
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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 |
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Electrodermal Activity
時間枠:Change in electrodermal activity after 5 minutes post-intervention
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Electrodermal Activity will be measured through the use of two electrodes that recorded changes in conductance through the skin located at the back of the dominant hand
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Change in electrodermal activity after 5 minutes post-intervention
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Respiration Rate
時間枠:Change in respiration rate after 5 minutes post-intervention
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Respiration Rate will be measured through a pressure transducer located in the centre of the chest, where it was fixed by a strap
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Change in respiration rate after 5 minutes post-intervention
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Heart Rate
時間枠:Change in heart rate after 5 minutes post-intervention
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Heart Rate will be measured by three electrodes located in the left area of the chest.
One of the electrodes was placed in the middle zone while a second electrode was positioned on the lateral side, and a third one on the lower left side, below the first electrode.
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Change in heart rate after 5 minutes post-intervention
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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 |
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視覚および運動感覚の運動イメージ能力
時間枠:介入前
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視覚および運動感覚の運動イメージ能力は、MIQ-Rアンケートで測定されます。
MIQ-R には、視覚と運動感覚の 2 つのサブスケールで繰り返される 4 つの動きがあります。
さらに、1 から 7 までのスコアが割り当てられます。1 は運動イメージをイメージするのが難しい、または以前に行われた動きを感じるのが困難であることを表し、7 は最も容易であることを表します。
MIQ-Rに変更が加えられました。
小さいジャンプをする項目2と5は、つま先立ちに変更されました。
MIQ-R の内部一貫性は一貫して適切であり、Cronbach の α 係数は、合計スケールで 0.84、視覚サブスケールで 0.80、運動感覚サブスケールで 0.84 を超えています。
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介入前
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メンタルクロノメトリー
時間枠:介入前
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メンタルクロノメトリー評価は、被験者の運動イメージ能力を測定するためにも使用されました。
ストップウォッチを使用して、各 MIQ-R タスクの実行に費やされた時間を記録しました。
記録された時間は、評価者によって与えられたタスクを開始するためのコマンドと、被験者によって与えられたタスクの結論の口頭での応答との間の間隔に対応します。
メンタルクロノメトリーは、MI 能力の客観的な尺度を収集するために以前に採用された信頼できる行動タスクです。
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介入前
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身体活動の程度
時間枠:介入前
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身体活動の程度は、国際身体活動質問票を通じて客観化されました。これにより、被験者は、活動のレベルに応じて、高、中、低または非活動の 3 つのグループに分類できます。
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介入前
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協力者と研究者
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
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。
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