MethodsStudy design and participantsTwenty healthy and physically active seniors older than65 years (female/male: 12/8, age: 70 ± 4 y; body massindex: 25.0 (3.6) kg/m2 (mean (SD)); Body fat: 27.0 (9.1) %;physical activity: 10.9 (5.8) h/week) and twenty young andactive adults (female/male: 9/11, age: 27 ± 3 y; body massindex: 22.4 (2.2) kg/m2; body fat: 17.9 (5.9) %; physicalactivity: 8.7 (4.1) h/week) were enrolled in the presentstudy.