Effects of inspiratory muscle training on lung function, muscle oxygenation and functional capacity in older adults

  1. Rodrigo Yáñez-Sepúlveda 1
  2. Gladys Orellana-Lepe 2
  3. Matías Monsalves-Álvarez 1
  4. Marcelo Tuesta 1
  5. Aldo Vásquez-Bonilla 3
  6. Lilian Castro-Tapia 2
  7. Pamela Ruiz 4
  8. Jacqueline Páez-Herrera 5
  9. Jorge Olivares-Arancibia 6
  10. María Martínez-Olcina 7
  11. Ildefonso Alvear-Órdenes 8
  12. Alejandro Martínez-Rodríguez 7
  1. 1 Universidad Andrés Bello
    info
    Universidad Andrés Bello

    Santiago de Chile, Chile

    ROR https://ror.org/01qq57711

    Geographic location of the organization Universidad Andrés Bello
  2. 2 Universidad Viña del Mar
    info
    Universidad Viña del Mar

    Viña del Mar, Chile

    ROR https://ror.org/00txsqk22

    Geographic location of the organization Universidad Viña del Mar
  3. 3 Universidad de Extremadura
    info
    Universidad de Extremadura

    Badajoz, España

    ROR https://ror.org/0174shg90

    Geographic location of the organization Universidad de Extremadura
  4. 4 Universidad de Playa Ancha de Ciencias de la Educación
    info
    Universidad de Playa Ancha de Ciencias de la Educación

    Valparaíso, Chile

    ROR https://ror.org/0171wr661

    Geographic location of the organization Universidad de Playa Ancha de Ciencias de la Educación
  5. 5 Pontificia Universidad Católica de Valparaíso
    info
    Pontificia Universidad Católica de Valparaíso

    Valparaíso, Chile

    ROR https://ror.org/02cafbr77

    Geographic location of the organization Pontificia Universidad Católica de Valparaíso
  6. 6 Universidad de las Américas
  7. 7 Universitat d'Alacant
    info
    Universitat d'Alacant

    Alicante, España

    ROR https://ror.org/05t8bcz72

    Geographic location of the organization Universitat d'Alacant
  8. 8 Universidad de León
    info
    Universidad de León

    León, España

    ROR https://ror.org/02tzt0b78

    Geographic location of the organization Universidad de León
Journal:
Retos: nuevas tendencias en educación física, deporte y recreación

ISSN: 1579-1726 1988-2041

Year of publication: 2025

Issue: 66

Pages: 285-296

Type: Article

More publications in: Retos: nuevas tendencias en educación física, deporte y recreación

Abstract

Background and objective. Inspiratory muscle training (IMT) generates positive effects on physical performance, but there is little evidence on the effects on muscle resaturation in older adults. The study aimed to assess the impact of a 4-week Inspiratory Muscle Training (IMT) program on peak dynamic inspiratory strength, lung function, muscle oxygenation and func-tional capacity in functionally independent older adults. Material and methods. Twelve randomized older adults (EG= n6; 68.8 2.6 years; SCG=n6, 71.5 4.7years) completed the study. A 4-week IMT program was applied, along with general phys-ical activity recommendations. Activities of daily living, lung flow and volumes, peak dynamic inspiratory force (S-index), peak inspiratory flow (MIF), muscle resaturation velocity (ΔTSIre-oxy) by NIRS and the Senior Fitness Test battery were assessed preand postintervention. Results. Improvements in the EG in the Chair Stand Test (p=0.013; η²p=0.474), Biceps Curl Test (p=0.015; η²p=0.463) and 6 minutes walking test (p=0.011; η²p=0.495), while in the control group changes were observed only in Biceps Curl Test (p=0.004; η²p=0.589). An increase in EG was observed in the S-Index (p=0.038; η²p=0.363) with a high effect on peak inspiratory flow (MIF) (p=0.138; η²p=0.206), finally EG showed a high effect size on muscle resaturation velocity at the end of exercise (p=0.213; η²p=0.187; Δ=-31%). Conclusions. Short IMT program increases S-index, physical capacity and muscle oxygenation velocity. IMTmay be a complementary intervention strategy in older adults to improve their physical fitness and peripheral vascular response.

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