自然環境下での運動が都市部や屋内よりも優れていることを証明(Exercising in nature is superior to exercising in the city or at the gym)

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2025-09-17 コペンハーゲン大学(UCPH)

コペンハーゲン大学とヴェローナ大学の研究チームは、25人の若年男性を対象に自然、都市、屋内での1時間の歩行を比較する無作為化クロスオーバー試験を実施した。その結果、森林や公園など自然環境での運動は、都市やジム環境に比べてストレスホルモン(コルチゾール)の低下、心拍の速やかな回復、心拍変動の20〜30%上昇を示し、心身のリラックス効果が顕著だった。被験者は自然環境で最もポジティブな感情(喜び・満足・楽観)を体験し、疲労感や不安・退屈感が最も少なかった。また、自然での運動は継続意欲を最も高めることも分かった。本研究はPsychology of Sport and Exercise誌に掲載され、自然環境を週1回の運動に取り入れるだけで公衆衛生や都市計画に有益となる可能性が示唆された。

<関連情報>

緑の運動の効用評価:自然環境と人工環境における回復特性を評価した無作為化比較試験 Evaluating the benefits of green exercise: A randomized controlled trial in natural and built environments assessed for their restorative properties

Luca Laezza, Martina Vacondio, Alessandro Fornasiero, Barbara Pellegrini, Margherita Pasini, Margherita Brondino, Stefano De Dominicis
Psychology of Sport and Exercise  Available online: 20 May 2025
DOI:https://doi.org/10.1016/j.psychsport.2025.102883

自然環境下での運動が都市部や屋内よりも優れていることを証明(Exercising in nature is superior to exercising in the city or at the gym)

Highlights

  • Natural environments enhance restoration and stress recovery during exercise.
  • Green exercise boosts relaxation, enjoyment, and reduces perceived exertion.
  • HRV and cortisol indicate better physiological recovery in natural environments.
  • Restorative properties of settings significantly affect exercise outcomes.
  • The study employs a robust method to assess restoration across environments.

Abstract

Exercising in natural environments (green exercise, GE) has been shown to offer significant physiological and psychological health benefits compared to urban or indoor environments. This study evaluated the restorative effects of a 1-h light-to-moderate intensity exercise session across three environments: natural (G), urban (U), and indoor (I).

Using a randomized crossover design, 25 male participants (M = 26.3, SD = 4.3) completed a 1-h walk at 6 km/h in each setting. Psychological outcomes, including perceived restorativeness (PRS), restoration (ROS), emotional states, enjoyment, and behavioral intentions, were assessed with validated questionnaires. Physiological measures (cortisol, heart rate, heart rate variability) were collected pre- and post-intervention.

Results showed that G environment consistently elicited greater relaxation, higher positive emotions, and lower negative emotions compared to U and I. Restoration outcomes (PRS, ROS), enjoyment and intentions to exercise were significantly higher in G, while perceived exertion was lower in G compared to I. Physiologically, cortisol levels, heart rate, and heart rate variability differed by environment, with G promoting a more favorable recovery profile than U and I. No interaction effects were observed for physiological measures, suggesting consistent recovery patterns over time.

These findings highlight the restorative and stress-relieving potential of GE, emphasizing its role in enhancing mental well-being and supporting physical activity adherence. The study underscores the importance of natural environments as a resource for promoting health and well-being, while also identifying the need for further research to clarify the nuanced differences between urban and natural settings.

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