SKELETAL MUSCLE OXIDATIVE CAPACITY AND LIFE COURSE PHYSICAL ACTIVITY IN PARTICIPANTS OF THE BLSA
Physical activity has been associated with measures of mitochondrial quality and mitochondrial dysfunction and is connected to many aging processes. However, most studies relating physical activity to mitochondrial measures only capture physical activity over a limited period. The impact of engaging...
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| Veröffentlicht in: | Innovation in aging 2024-12, Vol.8 (Supplement_1), p.1087-1087 |
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| creator | Moore, Ann Zenobia Tian, Teresa Simonsick, Eleanor Ferrucci, Luigi |
| description | Physical activity has been associated with measures of mitochondrial quality and mitochondrial dysfunction and is connected to many aging processes. However, most studies relating physical activity to mitochondrial measures only capture physical activity over a limited period. The impact of engaging in physical activity across the life course on mitochondrial function has not been fully characterized. Here, in participants of the Baltimore Longitudinal Study of Aging we evaluate the association between a summary measure of life course physical activity (LCPA) and mitochondrial oxidative capacity, represented by postexercise phosphocreatine recovery rate (kPCr) in the quadriceps measured through 31P magnetic resonance spectroscopy. The study sample included 416 participants (43.5% male) with complete data. LCPA, derived from a physical activity history questionnaire by ranking participants’ sequences of reported activity intensity, starting with the current decade and ending with the response for physical activity during adolescence, was statistically significantly associated with kPCr (p |
| doi_str_mv | 10.1093/geroni/igae098.3493 |
| format | Article |
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However, most studies relating physical activity to mitochondrial measures only capture physical activity over a limited period. The impact of engaging in physical activity across the life course on mitochondrial function has not been fully characterized. Here, in participants of the Baltimore Longitudinal Study of Aging we evaluate the association between a summary measure of life course physical activity (LCPA) and mitochondrial oxidative capacity, represented by postexercise phosphocreatine recovery rate (kPCr) in the quadriceps measured through 31P magnetic resonance spectroscopy. The study sample included 416 participants (43.5% male) with complete data. LCPA, derived from a physical activity history questionnaire by ranking participants’ sequences of reported activity intensity, starting with the current decade and ending with the response for physical activity during adolescence, was statistically significantly associated with kPCr (p <.01) in multivariable linear regression models adjusted for demographic characteristics and indicators of current physical activity. The positive association between LCPA and kPCr independent of current physical activity suggests that mitochondrial oxidative capacity in later life may have a cumulative dimension. 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| subjects | Abstracts |
| title | SKELETAL MUSCLE OXIDATIVE CAPACITY AND LIFE COURSE PHYSICAL ACTIVITY IN PARTICIPANTS OF THE BLSA |
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