King Grub
2019-02-15, 09:16
Sitter man stilla för mycket får man inte den effekt av träningen som man borde få.
Acute exercise improves postprandial lipemia, glucose tolerance, and insulin sensitivity, all of which are risk factors for cardiovascular disease. However, recent research suggests that prolonged sedentary behavior might abolish these healthy metabolic benefits. Accordingly, this study aimed to elucidate the impact of an acute bout of exercise on postprandial plasma triglyceride, glucose, and insulin concentrations after four days of prolonged sitting (~13.5 hrs/day).
METHODS:
Ten untrained to recreationally active men (n=5) and women (n=5) completed a counterbalanced, crossover study. Four days of prolonged sitting without exercise (SIT) were compared to four days of prolonged sitting with a 1-hr bout of treadmill exercise (SIT+EX; 63.1±5.2% V̇O2max) on the evening of the fourth day. The following morning, participants completed a high fat/glucose tolerance test (HFGTT), during which plasma was collected over a 6-hr period and analyzed for triglycerides, glucose, and insulin.
RESULTS:
No differences between trials ( P > 0.05) were found in the overall plasma triglyceride, glucose, or insulin responses during the HFGTT. This lack of difference between trials comes with similarly low physical activity (~3,500-4,000 steps/day) on each day except for the 1-hr bout of exercise during SIT+EX the day before the HFGTT.
CONCLUSION:
These data indicate that physical inactivity (e.g., sitting ~13.5 hrs/day and <4,000 steps/day) creates a condition whereby people become "resistant" to the metabolic improvements that are typically derived from an acute bout of aerobic exercise (i.e., exercise resistance).
J Appl Physiol (1985). 2019 Feb 14. Inactivity Induces Resistance to the Metabolic Benefits Following Acute Exercise
Acute exercise improves postprandial lipemia, glucose tolerance, and insulin sensitivity, all of which are risk factors for cardiovascular disease. However, recent research suggests that prolonged sedentary behavior might abolish these healthy metabolic benefits. Accordingly, this study aimed to elucidate the impact of an acute bout of exercise on postprandial plasma triglyceride, glucose, and insulin concentrations after four days of prolonged sitting (~13.5 hrs/day).
METHODS:
Ten untrained to recreationally active men (n=5) and women (n=5) completed a counterbalanced, crossover study. Four days of prolonged sitting without exercise (SIT) were compared to four days of prolonged sitting with a 1-hr bout of treadmill exercise (SIT+EX; 63.1±5.2% V̇O2max) on the evening of the fourth day. The following morning, participants completed a high fat/glucose tolerance test (HFGTT), during which plasma was collected over a 6-hr period and analyzed for triglycerides, glucose, and insulin.
RESULTS:
No differences between trials ( P > 0.05) were found in the overall plasma triglyceride, glucose, or insulin responses during the HFGTT. This lack of difference between trials comes with similarly low physical activity (~3,500-4,000 steps/day) on each day except for the 1-hr bout of exercise during SIT+EX the day before the HFGTT.
CONCLUSION:
These data indicate that physical inactivity (e.g., sitting ~13.5 hrs/day and <4,000 steps/day) creates a condition whereby people become "resistant" to the metabolic improvements that are typically derived from an acute bout of aerobic exercise (i.e., exercise resistance).
J Appl Physiol (1985). 2019 Feb 14. Inactivity Induces Resistance to the Metabolic Benefits Following Acute Exercise