Maximal fat oxidation rate across the adult lifespan of trained women
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Maximal fat oxidation rate across the adult lifespan of trained women. / Dahlgaard Hansen, I. M.; Wismann, J. F.; Sahl, R. E.; Frandsen, J.; Hansen, M.; Ingersen, A.; Schmücker, M.; Modvig, J. L.; Dela, F.; Larsen, S.; Helge, J. W.
I: European Journal of Sport Science, Bind 24, Nr. 1, 2024, s. 107-115.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Maximal fat oxidation rate across the adult lifespan of trained women
AU - Dahlgaard Hansen, I. M.
AU - Wismann, J. F.
AU - Sahl, R. E.
AU - Frandsen, J.
AU - Hansen, M.
AU - Ingersen, A.
AU - Schmücker, M.
AU - Modvig, J. L.
AU - Dela, F.
AU - Larsen, S.
AU - Helge, J. W.
N1 - Publisher Copyright: © 2023 The Authors. European Journal of Sport Science published by Wiley-VCH GmbH on behalf of European College of Sport Science.
PY - 2024
Y1 - 2024
N2 - The fat oxidation capacity is higher in young compared to elderly subjects and higher in premenopausal compared to postmenopausal women, but the influence of age on maximal fat oxidation (MFO) is not clear. Therefore, this study aimed to evaluate MFO (g/min) across the lifespan of trained adult women. In total, 36 healthy trained women were recruited into three groups: (n = 12), young (27 ± 3 years, mean ± SD) premenopausal, middle-aged (57 ± 3 years), and older (71 ± 2 years) postmenopausal women and all had a body mass index <25 kg/m2. After an overnight fast, body composition was determined by dual-energy X-ray absorptiometry, and blood samples were obtained. A FATmax-test was performed on a cycle ergometer, and MFO was calculated from the pulmonary V̇O2 and V̇CO2 measured by indirect calorimetry. The absolute MFO was significantly higher in young (0.40 ± 0.07 g/min) compared to both middle-aged (0.33 ± 0.07 g/min) (p = 0.035) and old (0.25 ± 0.05 g/min) women (p < 0.001). Absolute MFO was higher in middle-aged compared to old women (p = 0.018). Relative MFO (MFO/LBM, mg/min/LBM) was higher in young (8.39 ± 1.62 mg/min/LBM) compared to old (6.16 ± 1.14 mg/min/LBM) women (p = 0.004). A significant linear relationship was observed between absolute MFO and age (R2 = 0.41; p < 0.001), V̇O2max (R2 = 0.40; p < 0.001), and LBM (R2 = 0.13; p = 0.033), respectively, and between relative MFO and fat mass (R2 = 0.12; p = 0.04). In conclusion, the maximal capacity to oxidize fat is attenuated with age in trained women. Furthermore, postmenopausal middle-aged women have higher absolute MFO compared to older women, and this implies that it is age per se and not a change in estrogen availability that leads to lower absolute MFO.
AB - The fat oxidation capacity is higher in young compared to elderly subjects and higher in premenopausal compared to postmenopausal women, but the influence of age on maximal fat oxidation (MFO) is not clear. Therefore, this study aimed to evaluate MFO (g/min) across the lifespan of trained adult women. In total, 36 healthy trained women were recruited into three groups: (n = 12), young (27 ± 3 years, mean ± SD) premenopausal, middle-aged (57 ± 3 years), and older (71 ± 2 years) postmenopausal women and all had a body mass index <25 kg/m2. After an overnight fast, body composition was determined by dual-energy X-ray absorptiometry, and blood samples were obtained. A FATmax-test was performed on a cycle ergometer, and MFO was calculated from the pulmonary V̇O2 and V̇CO2 measured by indirect calorimetry. The absolute MFO was significantly higher in young (0.40 ± 0.07 g/min) compared to both middle-aged (0.33 ± 0.07 g/min) (p = 0.035) and old (0.25 ± 0.05 g/min) women (p < 0.001). Absolute MFO was higher in middle-aged compared to old women (p = 0.018). Relative MFO (MFO/LBM, mg/min/LBM) was higher in young (8.39 ± 1.62 mg/min/LBM) compared to old (6.16 ± 1.14 mg/min/LBM) women (p = 0.004). A significant linear relationship was observed between absolute MFO and age (R2 = 0.41; p < 0.001), V̇O2max (R2 = 0.40; p < 0.001), and LBM (R2 = 0.13; p = 0.033), respectively, and between relative MFO and fat mass (R2 = 0.12; p = 0.04). In conclusion, the maximal capacity to oxidize fat is attenuated with age in trained women. Furthermore, postmenopausal middle-aged women have higher absolute MFO compared to older women, and this implies that it is age per se and not a change in estrogen availability that leads to lower absolute MFO.
KW - aging
KW - fat oxidation
KW - women
U2 - 10.1002/ejsc.12027
DO - 10.1002/ejsc.12027
M3 - Journal article
AN - SCOPUS:85187898795
VL - 24
SP - 107
EP - 115
JO - European Journal of Sport Science
JF - European Journal of Sport Science
SN - 1746-1391
IS - 1
ER -
ID: 387268316