Eintrag weiter verarbeiten
Effects of exercise intensity and training on lipid metabolism in young women
Gespeichert in:
| Zeitschriftentitel: | American Journal of Physiology-Endocrinology and Metabolism |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | American Journal of Physiology-Endocrinology and Metabolism, 275, 1998, 5, S. E853-E863 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Physiological Society
|
| Schlagwörter: |
| author_facet |
Friedlander, Anne L. Casazza, Gretchen A. Horning, Michael A. Buddinger, Thomas F. Brooks, George A. Friedlander, Anne L. Casazza, Gretchen A. Horning, Michael A. Buddinger, Thomas F. Brooks, George A. |
|---|---|
| author |
Friedlander, Anne L. Casazza, Gretchen A. Horning, Michael A. Buddinger, Thomas F. Brooks, George A. |
| spellingShingle |
Friedlander, Anne L. Casazza, Gretchen A. Horning, Michael A. Buddinger, Thomas F. Brooks, George A. American Journal of Physiology-Endocrinology and Metabolism Effects of exercise intensity and training on lipid metabolism in young women Physiology (medical) Physiology Endocrinology, Diabetes and Metabolism |
| author_sort |
friedlander, anne l. |
| spelling |
Friedlander, Anne L. Casazza, Gretchen A. Horning, Michael A. Buddinger, Thomas F. Brooks, George A. 0193-1849 1522-1555 American Physiological Society Physiology (medical) Physiology Endocrinology, Diabetes and Metabolism http://dx.doi.org/10.1152/ajpendo.1998.275.5.e853 <jats:p> We examined the effects of exercise intensity and training [12 wk, 5 days/wk, 1 h, 75% peak oxygen consumption (V˙o <jats:sub>2 peak</jats:sub>)] on lipolysis and plasma free fatty acid (FFA) flux in women ( n = 8; 24.3 ± 1.6 yr). Two pretraining trials (45 and 65% ofV˙o <jats:sub>2 peak</jats:sub>) and two posttraining trials [same absolute workload (65% of oldV˙o <jats:sub>2 peak</jats:sub>; ABT) and same relative workload (65% of newV˙o <jats:sub>2 peak</jats:sub>; RLT)] were performed using infusions of [1,1,2,3,3-<jats:sup>2</jats:sup>H]glycerol and [1-<jats:sup>13</jats:sup>C]palmitate. Pretraining rates of FFA appearance (R<jats:sub>a</jats:sub>), disappearance (R<jats:sub>d</jats:sub>), and oxidation (R<jats:sub>ox p</jats:sub>) were similar between the 65% (6.8 ± 0.6, 6.2 ± 0.7, 3.1 ± 0.3 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, respectively) and the 45% ofV˙o <jats:sub>2 peak</jats:sub>trials. At ABT and RLT training increased FFA R<jats:sub>a</jats:sub> to 8.4 ± 1.0 and 9.7 ± 1.1 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, R<jats:sub>d</jats:sub> to 8.3 ± 1.0 and 9.5 ± 1.1 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, and R<jats:sub>ox p</jats:sub> to 4.8 ± 0.4 and 6.7 ± 0.7 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, respectively ( P ≤ 0.05). Total FFA oxidation from respiratory exchange ratio was also elevated after training at ABT and RLT, with all of the increase attributed to plasma FFA sources. Pretraining, glycerol R<jats:sub>a</jats:sub> was higher during exercise at 65 than 45% of V˙o <jats:sub>2 peak</jats:sub>(6.9 ± 0.9 vs. 4.7 ± 0.6 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>) but was not changed by training. In young women 1) plasma FFA kinetics and oxidation are not linearly related to exercise intensity before training, 2) training increases FFA R<jats:sub>a</jats:sub>, R<jats:sub>d</jats:sub>, and R<jats:sub>ox p</jats:sub> whether measured at given absolute or relative exercise intensities, 3) whole body lipolysis (glycerol R<jats:sub>a</jats:sub>) during exercise is not significantly impacted by training, and 4) training-induced increases in plasma FFA oxidation are the main contributor to elevated total FFA oxidation during exercise exertion after training. </jats:p> Effects of exercise intensity and training on lipid metabolism in young women American Journal of Physiology-Endocrinology and Metabolism |
| doi_str_mv |
10.1152/ajpendo.1998.275.5.e853 |
| facet_avail |
Online Free |
| finc_class_facet |
Biologie Medizin |
| format |
ElectronicArticle |
| fullrecord |
blob:ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE1Mi9hanBlbmRvLjE5OTguMjc1LjUuZTg1Mw |
| id |
ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE1Mi9hanBlbmRvLjE5OTguMjc1LjUuZTg1Mw |
| institution |
DE-Gla1 DE-Zi4 DE-15 DE-Pl11 DE-Rs1 DE-105 DE-14 DE-Ch1 DE-L229 DE-D275 DE-Bn3 DE-Brt1 DE-Zwi2 DE-D161 |
| imprint |
American Physiological Society, 1998 |
| imprint_str_mv |
American Physiological Society, 1998 |
| issn |
0193-1849 1522-1555 |
| issn_str_mv |
0193-1849 1522-1555 |
| language |
English |
| mega_collection |
American Physiological Society (CrossRef) |
| match_str |
friedlander1998effectsofexerciseintensityandtrainingonlipidmetabolisminyoungwomen |
| publishDateSort |
1998 |
| publisher |
American Physiological Society |
| recordtype |
ai |
| record_format |
ai |
| series |
American Journal of Physiology-Endocrinology and Metabolism |
| source_id |
49 |
| title |
Effects of exercise intensity and training on lipid metabolism in young women |
| title_unstemmed |
Effects of exercise intensity and training on lipid metabolism in young women |
| title_full |
Effects of exercise intensity and training on lipid metabolism in young women |
| title_fullStr |
Effects of exercise intensity and training on lipid metabolism in young women |
| title_full_unstemmed |
Effects of exercise intensity and training on lipid metabolism in young women |
| title_short |
Effects of exercise intensity and training on lipid metabolism in young women |
| title_sort |
effects of exercise intensity and training on lipid metabolism in young women |
| topic |
Physiology (medical) Physiology Endocrinology, Diabetes and Metabolism |
| url |
http://dx.doi.org/10.1152/ajpendo.1998.275.5.e853 |
| publishDate |
1998 |
| physical |
E853-E863 |
| description |
<jats:p> We examined the effects of exercise intensity and training [12 wk, 5 days/wk, 1 h, 75% peak oxygen consumption (V˙o <jats:sub>2 peak</jats:sub>)] on lipolysis and plasma free fatty acid (FFA) flux in women ( n = 8; 24.3 ± 1.6 yr). Two pretraining trials (45 and 65% ofV˙o <jats:sub>2 peak</jats:sub>) and two posttraining trials [same absolute workload (65% of oldV˙o <jats:sub>2 peak</jats:sub>; ABT) and same relative workload (65% of newV˙o <jats:sub>2 peak</jats:sub>; RLT)] were performed using infusions of [1,1,2,3,3-<jats:sup>2</jats:sup>H]glycerol and [1-<jats:sup>13</jats:sup>C]palmitate. Pretraining rates of FFA appearance (R<jats:sub>a</jats:sub>), disappearance (R<jats:sub>d</jats:sub>), and oxidation (R<jats:sub>ox p</jats:sub>) were similar between the 65% (6.8 ± 0.6, 6.2 ± 0.7, 3.1 ± 0.3 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, respectively) and the 45% ofV˙o <jats:sub>2 peak</jats:sub>trials. At ABT and RLT training increased FFA R<jats:sub>a</jats:sub> to 8.4 ± 1.0 and 9.7 ± 1.1 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, R<jats:sub>d</jats:sub> to 8.3 ± 1.0 and 9.5 ± 1.1 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, and R<jats:sub>ox p</jats:sub> to 4.8 ± 0.4 and 6.7 ± 0.7 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, respectively ( P ≤ 0.05). Total FFA oxidation from respiratory exchange ratio was also elevated after training at ABT and RLT, with all of the increase attributed to plasma FFA sources. Pretraining, glycerol R<jats:sub>a</jats:sub> was higher during exercise at 65 than 45% of V˙o <jats:sub>2 peak</jats:sub>(6.9 ± 0.9 vs. 4.7 ± 0.6 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>) but was not changed by training. In young women 1) plasma FFA kinetics and oxidation are not linearly related to exercise intensity before training, 2) training increases FFA R<jats:sub>a</jats:sub>, R<jats:sub>d</jats:sub>, and R<jats:sub>ox p</jats:sub> whether measured at given absolute or relative exercise intensities, 3) whole body lipolysis (glycerol R<jats:sub>a</jats:sub>) during exercise is not significantly impacted by training, and 4) training-induced increases in plasma FFA oxidation are the main contributor to elevated total FFA oxidation during exercise exertion after training. </jats:p> |
| container_issue |
5 |
| container_start_page |
0 |
| container_title |
American Journal of Physiology-Endocrinology and Metabolism |
| container_volume |
275 |
| format_de105 |
Article, E-Article |
| format_de14 |
Article, E-Article |
| format_de15 |
Article, E-Article |
| format_de520 |
Article, E-Article |
| format_de540 |
Article, E-Article |
| format_dech1 |
Article, E-Article |
| format_ded117 |
Article, E-Article |
| format_degla1 |
E-Article |
| format_del152 |
Buch |
| format_del189 |
Article, E-Article |
| format_dezi4 |
Article |
| format_dezwi2 |
Article, E-Article |
| format_finc |
Article, E-Article |
| format_nrw |
Article, E-Article |
| _version_ |
1792348577956102153 |
| geogr_code |
not assigned |
| last_indexed |
2024-03-01T18:13:22.237Z |
| geogr_code_person |
not assigned |
| openURL |
url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fvufind.svn.sourceforge.net%3Agenerator&rft.title=Effects+of+exercise+intensity+and+training++on+lipid+metabolism+in+young+women&rft.date=1998-11-01&genre=article&issn=1522-1555&volume=275&issue=5&pages=E853-E863&jtitle=American+Journal+of+Physiology-Endocrinology+and+Metabolism&atitle=Effects+of+exercise+intensity+and+training++on+lipid+metabolism+in+young+women&aulast=Brooks&aufirst=George+A.&rft_id=info%3Adoi%2F10.1152%2Fajpendo.1998.275.5.e853&rft.language%5B0%5D=eng |
| SOLR | |
| _version_ | 1792348577956102153 |
| author | Friedlander, Anne L., Casazza, Gretchen A., Horning, Michael A., Buddinger, Thomas F., Brooks, George A. |
| author_facet | Friedlander, Anne L., Casazza, Gretchen A., Horning, Michael A., Buddinger, Thomas F., Brooks, George A., Friedlander, Anne L., Casazza, Gretchen A., Horning, Michael A., Buddinger, Thomas F., Brooks, George A. |
| author_sort | friedlander, anne l. |
| container_issue | 5 |
| container_start_page | 0 |
| container_title | American Journal of Physiology-Endocrinology and Metabolism |
| container_volume | 275 |
| description | <jats:p> We examined the effects of exercise intensity and training [12 wk, 5 days/wk, 1 h, 75% peak oxygen consumption (V˙o <jats:sub>2 peak</jats:sub>)] on lipolysis and plasma free fatty acid (FFA) flux in women ( n = 8; 24.3 ± 1.6 yr). Two pretraining trials (45 and 65% ofV˙o <jats:sub>2 peak</jats:sub>) and two posttraining trials [same absolute workload (65% of oldV˙o <jats:sub>2 peak</jats:sub>; ABT) and same relative workload (65% of newV˙o <jats:sub>2 peak</jats:sub>; RLT)] were performed using infusions of [1,1,2,3,3-<jats:sup>2</jats:sup>H]glycerol and [1-<jats:sup>13</jats:sup>C]palmitate. Pretraining rates of FFA appearance (R<jats:sub>a</jats:sub>), disappearance (R<jats:sub>d</jats:sub>), and oxidation (R<jats:sub>ox p</jats:sub>) were similar between the 65% (6.8 ± 0.6, 6.2 ± 0.7, 3.1 ± 0.3 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, respectively) and the 45% ofV˙o <jats:sub>2 peak</jats:sub>trials. At ABT and RLT training increased FFA R<jats:sub>a</jats:sub> to 8.4 ± 1.0 and 9.7 ± 1.1 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, R<jats:sub>d</jats:sub> to 8.3 ± 1.0 and 9.5 ± 1.1 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, and R<jats:sub>ox p</jats:sub> to 4.8 ± 0.4 and 6.7 ± 0.7 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, respectively ( P ≤ 0.05). Total FFA oxidation from respiratory exchange ratio was also elevated after training at ABT and RLT, with all of the increase attributed to plasma FFA sources. Pretraining, glycerol R<jats:sub>a</jats:sub> was higher during exercise at 65 than 45% of V˙o <jats:sub>2 peak</jats:sub>(6.9 ± 0.9 vs. 4.7 ± 0.6 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>) but was not changed by training. In young women 1) plasma FFA kinetics and oxidation are not linearly related to exercise intensity before training, 2) training increases FFA R<jats:sub>a</jats:sub>, R<jats:sub>d</jats:sub>, and R<jats:sub>ox p</jats:sub> whether measured at given absolute or relative exercise intensities, 3) whole body lipolysis (glycerol R<jats:sub>a</jats:sub>) during exercise is not significantly impacted by training, and 4) training-induced increases in plasma FFA oxidation are the main contributor to elevated total FFA oxidation during exercise exertion after training. </jats:p> |
| doi_str_mv | 10.1152/ajpendo.1998.275.5.e853 |
| facet_avail | Online, Free |
| finc_class_facet | Biologie, Medizin |
| format | ElectronicArticle |
| format_de105 | Article, E-Article |
| format_de14 | Article, E-Article |
| format_de15 | Article, E-Article |
| format_de520 | Article, E-Article |
| format_de540 | Article, E-Article |
| format_dech1 | Article, E-Article |
| format_ded117 | Article, E-Article |
| format_degla1 | E-Article |
| format_del152 | Buch |
| format_del189 | Article, E-Article |
| format_dezi4 | Article |
| format_dezwi2 | Article, E-Article |
| format_finc | Article, E-Article |
| format_nrw | Article, E-Article |
| geogr_code | not assigned |
| geogr_code_person | not assigned |
| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE1Mi9hanBlbmRvLjE5OTguMjc1LjUuZTg1Mw |
| imprint | American Physiological Society, 1998 |
| imprint_str_mv | American Physiological Society, 1998 |
| institution | DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161 |
| issn | 0193-1849, 1522-1555 |
| issn_str_mv | 0193-1849, 1522-1555 |
| language | English |
| last_indexed | 2024-03-01T18:13:22.237Z |
| match_str | friedlander1998effectsofexerciseintensityandtrainingonlipidmetabolisminyoungwomen |
| mega_collection | American Physiological Society (CrossRef) |
| physical | E853-E863 |
| publishDate | 1998 |
| publishDateSort | 1998 |
| publisher | American Physiological Society |
| record_format | ai |
| recordtype | ai |
| series | American Journal of Physiology-Endocrinology and Metabolism |
| source_id | 49 |
| spelling | Friedlander, Anne L. Casazza, Gretchen A. Horning, Michael A. Buddinger, Thomas F. Brooks, George A. 0193-1849 1522-1555 American Physiological Society Physiology (medical) Physiology Endocrinology, Diabetes and Metabolism http://dx.doi.org/10.1152/ajpendo.1998.275.5.e853 <jats:p> We examined the effects of exercise intensity and training [12 wk, 5 days/wk, 1 h, 75% peak oxygen consumption (V˙o <jats:sub>2 peak</jats:sub>)] on lipolysis and plasma free fatty acid (FFA) flux in women ( n = 8; 24.3 ± 1.6 yr). Two pretraining trials (45 and 65% ofV˙o <jats:sub>2 peak</jats:sub>) and two posttraining trials [same absolute workload (65% of oldV˙o <jats:sub>2 peak</jats:sub>; ABT) and same relative workload (65% of newV˙o <jats:sub>2 peak</jats:sub>; RLT)] were performed using infusions of [1,1,2,3,3-<jats:sup>2</jats:sup>H]glycerol and [1-<jats:sup>13</jats:sup>C]palmitate. Pretraining rates of FFA appearance (R<jats:sub>a</jats:sub>), disappearance (R<jats:sub>d</jats:sub>), and oxidation (R<jats:sub>ox p</jats:sub>) were similar between the 65% (6.8 ± 0.6, 6.2 ± 0.7, 3.1 ± 0.3 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, respectively) and the 45% ofV˙o <jats:sub>2 peak</jats:sub>trials. At ABT and RLT training increased FFA R<jats:sub>a</jats:sub> to 8.4 ± 1.0 and 9.7 ± 1.1 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, R<jats:sub>d</jats:sub> to 8.3 ± 1.0 and 9.5 ± 1.1 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, and R<jats:sub>ox p</jats:sub> to 4.8 ± 0.4 and 6.7 ± 0.7 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>, respectively ( P ≤ 0.05). Total FFA oxidation from respiratory exchange ratio was also elevated after training at ABT and RLT, with all of the increase attributed to plasma FFA sources. Pretraining, glycerol R<jats:sub>a</jats:sub> was higher during exercise at 65 than 45% of V˙o <jats:sub>2 peak</jats:sub>(6.9 ± 0.9 vs. 4.7 ± 0.6 μmol ⋅ kg<jats:sup>−1</jats:sup> ⋅ min<jats:sup>−1</jats:sup>) but was not changed by training. In young women 1) plasma FFA kinetics and oxidation are not linearly related to exercise intensity before training, 2) training increases FFA R<jats:sub>a</jats:sub>, R<jats:sub>d</jats:sub>, and R<jats:sub>ox p</jats:sub> whether measured at given absolute or relative exercise intensities, 3) whole body lipolysis (glycerol R<jats:sub>a</jats:sub>) during exercise is not significantly impacted by training, and 4) training-induced increases in plasma FFA oxidation are the main contributor to elevated total FFA oxidation during exercise exertion after training. </jats:p> Effects of exercise intensity and training on lipid metabolism in young women American Journal of Physiology-Endocrinology and Metabolism |
| spellingShingle | Friedlander, Anne L., Casazza, Gretchen A., Horning, Michael A., Buddinger, Thomas F., Brooks, George A., American Journal of Physiology-Endocrinology and Metabolism, Effects of exercise intensity and training on lipid metabolism in young women, Physiology (medical), Physiology, Endocrinology, Diabetes and Metabolism |
| title | Effects of exercise intensity and training on lipid metabolism in young women |
| title_full | Effects of exercise intensity and training on lipid metabolism in young women |
| title_fullStr | Effects of exercise intensity and training on lipid metabolism in young women |
| title_full_unstemmed | Effects of exercise intensity and training on lipid metabolism in young women |
| title_short | Effects of exercise intensity and training on lipid metabolism in young women |
| title_sort | effects of exercise intensity and training on lipid metabolism in young women |
| title_unstemmed | Effects of exercise intensity and training on lipid metabolism in young women |
| topic | Physiology (medical), Physiology, Endocrinology, Diabetes and Metabolism |
| url | http://dx.doi.org/10.1152/ajpendo.1998.275.5.e853 |