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Effect of Aging and Aerobic Fitness Level on Heat Dissipation

2020年1月22日 更新者:Petros Dinas

Effect of Aging and Aerobic Fitness Level on Heat Dissipation in Neutral Conditions

In the context of global aging, the health risk factors associated with exercising or working in the heat for aging population are exacerbated by the rising in global surface temperatures. The purpose of this investigation is to determine at what age the heat loss decrements occur and to examine if aerobic fitness level can affect the heat loss capacity in neutral environmental conditions.

調査の概要

状態

完了

詳細な説明

All trials were conducted to indoor gyms with the same environmental temperature and relative humidity, 26 - 30oC and 40-50% respectively, to ensure no difference in body temperature were due to the external thermal stress. The participants were instructed to refrain from intense exercise as well as alcohol and caffeine consumption for 24 hours prior to experimental trial and to had a light meal 2h before their arrival.

Upon arrival, participants would have to wear running shoes, light and short running shorts and light cotton socks. Participants received comprehensive instructions about the shuttle run test and the whole process of measurements. Firstly participants answered the International Physical Activity Questionnaire (IPAQ). Thereafter, anthropometrics data (weight and height) were evaluated as well as the body temperature in external ear canal and axillary. All participants followed five minutes warming up and then performed to 20 m shuttle run test until their volitional limit. Once the participants could no longer run, the test was over and the number of laps was recorded. After the end of the shuttle run, were evaluated the body temperature and the weight of each participants. No fluids consumptions were permitted until the second weighing. They were weighed twice, at baseline and at the end of the running test with a precision weight scale (Kern DE 150K2D, KERN & SOHN GmbH, Balingen, Germany).

Environmental data including air temperature and relative humidity were measured continuously using a portable weather station (LCD Digital Temperature & Humidity Meter HTC-1). The weather station was placed 1 meter above the ground according to the manufacturer's guidelines.

研究の種類

介入

入学 (実際)

431

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究場所

    • Thessaly
      • Trikala、Thessaly、ギリシャ、42100
        • Department of Exercise Science, University of Thessaly
      • Tríkala、Thessaly、ギリシャ、42100
        • FAME Lab, Department of Exercise Science, University of Thessaly

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

9年~60年 (子、大人)

健康ボランティアの受け入れ

はい

受講資格のある性別

全て

説明

Inclusion Criteria:

  • Healthy children and adults

Exclusion Criteria:

  • Diagnosed chronic medical condition;
  • Symptoms of acute illness;
  • Recent (past 4 weeks) usage of medications known to affect the circulatory system, the thyroid, the pituitary function, or the metabolic status

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

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:防止
  • 割り当て:なし
  • 介入モデル:単一グループの割り当て
  • 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:Shuttle run test
At the shuttle run test, participants were required to run between two lines 20 meters apart, while keeping pace with audio signals emitted from a pre-recorded CD. The frequency of the sound signals increases in such way that running speed was increased by 0.5 km h-1 each minute from the starting speed 8.5 km h-1.
At the shuttle run test, participants were required to run between two lines 20 meters apart, while keeping pace with audio signals emitted from a pre-recorded CD. The frequency of the sound signals increases in such way that running speed was increased by 0.5 km h-1 each minute from the starting speed 8.5 km h-1.

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
Aerobic fitness level
時間枠:Through study completion (a shuttle run test), an average of 15 minutes
Aerobic fitness level was defined by peak oxygen uptake (VO2peak). VO2peak was determined by a 20m shuttle run test. The number of the last announced stage and the equivalent maximal speed from participants' performance were used for its VO2peak estimation
Through study completion (a shuttle run test), an average of 15 minutes
Change from baseline ear canal temperature
時間枠:Change from baseline to the end of study completion (a shuttle run test), an average of 15 minutes
Ear canal temperature was recorded twice, at baseline and at the end of the shuttle run test (three times each at the left ear and recorded the mean value), using ear thermometer (IR100, MicrolifeSwitzerland)
Change from baseline to the end of study completion (a shuttle run test), an average of 15 minutes
Change from baseline axillary temperature
時間枠:Change from baseline to the end of study completion (a shuttle run test), an average of 15 minutes
Axillary temperature was recorded twice, at baseline and at the end of the shuttle run test, using the electronic digital thermometer (EcoTemp, OMRON, Japan)
Change from baseline to the end of study completion (a shuttle run test), an average of 15 minutes
Physical activity levels
時間枠:Once before the shuttle run test
Physical activity of the subject in a usual week was recorded via International Physical Activity Questionnaire. Scores include steps/day and METs/week, with no lower and upper limit
Once before the shuttle run test
Change from baseline body weight
時間枠:Change from baseline to the end of study completion (a shuttle run test), an average of 15 minutes
Weight was recorded twice, at baseline and at the end of the shuttle run test, using a precision weight scale (Kern DE 150K2D, KERN & SOHN GmbH, Balingen, Germany
Change from baseline to the end of study completion (a shuttle run test), an average of 15 minutes
Change from baseline whole Body Sweat Rate
時間枠:Change from baseline to the end of study completion (a shuttle run test), an average of 15 minutes
Whole Body Sweat Rate was determined by the difference of the pre-test and post-test weight of the participants
Change from baseline to the end of study completion (a shuttle run test), an average of 15 minutes
Air temperature
時間枠:Up to 30 minutes, during a one complete shuttle run test
Air temperature was measured continuously using a portable weather station (LCD Digital Temperature & Humidity Meter HTC-1placed) 1 meter above the ground according to the manufacturer's guidelines
Up to 30 minutes, during a one complete shuttle run test
Relative humidity
時間枠:Up to 30 minutes, during a one complete shuttle run test
Relative humidity was measured continuously using a portable weather station (LCD Digital Temperature & Humidity Meter HTC-1) placed 1 meter above the ground according to the manufacturer's guidelines
Up to 30 minutes, during a one complete shuttle run test

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2014年5月1日

一次修了 (実際)

2018年10月30日

研究の完了 (実際)

2018年10月30日

試験登録日

最初に提出

2020年1月16日

QC基準を満たした最初の提出物

2020年1月22日

最初の投稿 (実際)

2020年1月27日

学習記録の更新

投稿された最後の更新 (実際)

2020年1月27日

QC基準を満たした最後の更新が送信されました

2020年1月22日

最終確認日

2020年1月1日

詳しくは

本研究に関する用語

追加の関連 MeSH 用語

その他の研究ID番号

  • 10. Aging and heat loss

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

未定

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

いいえ

米国FDA規制機器製品の研究

いいえ

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。

Shuttle run testの臨床試験

3
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