High-intensity interval exercise (HIIE) reduces cellular senescence in human muscles through acute inflammation, as shown by decreased p16INK4a and CD11b mRNA levels. Blocking inflammation with ibuprofen attenuates these effects, highlighting the role of inflammation in exercise-induced muscle rejuvenation and its potential for enhancing healthspan and longevity.
May 2024 – Aging
Key takeaways
- High-intensity exercise reduces cellular senescence: High-intensity interval exercise (HIIE) significantly lowers p16INK4a, a marker of cellular ageing, in human muscles. This suggests that intense exercise can help clear senescent cells, potentially improving tissue health and delaying age-related decline
- Inflammation is key to exercise benefits: The senolytic effects of HIIE are mediated by acute inflammation. Blocking inflammation with ibuprofen reduces these benefits, indicating that inflammation plays a crucial role in exercise-induced muscle rejuvenation and anti-ageing effects
- Senescent cell clearance improves muscle health: Clearing senescent cells through exercise enhances muscle regeneration and reduces chronic inflammation. This process supports tissue repair and may contribute to better physical function and longevity
- Short, intense workouts offer prolonged benefits: A brief 10-minute HIIE session can trigger anti-inflammatory and senolytic effects lasting up to 24 hours. This highlights the efficiency of high-intensity exercise in promoting long-term muscle health and combating ageing
Read the article at: Jean, Wei-Horng, et al. “Senolytic Effects of Exercise in Human Muscles Require Acute Inflammation.” Aging, vol. 16, no. 10, 2024, pp. 8599–8610. DOI:10.18632/aging.205827.
