Feasibility of Different Exercise Modalities for Community-Dwelling Residents With Physical Inactivity: A Randomized...

Area of Science:

• Exercise physiology
• Metabolic health research
• Public health interventions

Background:

• Exercise interventions are beneficial for health but challenging to implement.
• Optimal exercise modality for metabolic health improvement remains unclear.

Purpose of the Study:

• Assess feasibility of supervised vs. home-based exercise interventions.
• Evaluate preliminary efficacy of aerobic, combined, and high-intensity interval training (HIIT) on body composition, anthropometrics, and lipids.
• Investigate adherence, intensity adherence, attrition, and adverse events.

Main Methods:

• Randomized controlled trial with 72 sedentary adults (40-70 years).
• Four groups: 12-week aerobic, aerobic plus resistance, HIIT, and control.
• Exercise groups: twice weekly supervised, once weekly home-based moderate-intensity exercise.
• Measurements: body composition, anthropometrics, lipid profiles pre- and post-intervention.

Main Results:

• High adherence rates: supervised (74.01%-87.54%), home-based (64.98%-83.90%), and intensity (82.65%-92.65%).
• Attrition rate: 12.50%-17.65%; no adverse events reported.
• Significant reductions in body weight (p=.048) and LDL cholesterol (p=.02) in exercise groups vs. control, though not statistically significant between groups.

Conclusions:

• 12-week exercise interventions can effectively reduce body weight and LDL cholesterol.
• High adherence (≥82.65% to moderate intensity, ≥70.84% to 3x/week) is key for efficacy.
• Aerobic, combined, and HIIT exercise modalities show potential for metabolic health improvements.