Stillasittande försämrar kroppens förmåga att bränna fett under träning

[King Grub]

Introduction

Two benefits of acute exercise are the next day’s lowering of the postprandial plasma triglyceride response to a high fat meal and increased fat oxidation. However, if activity levels (daily steps) are very low, these acute adaptations to exercise don’t occur. This phenomenon has been termed ‘exercise resistance’. This study sought to systematically reduce daily step number and identify the range of step counts that elicit ‘exercise resistance’.

Methods

Ten participants completed three, five-day trials in a randomized, crossover design with differing levels of step reduction. Following two days of controlled activity, participants completed two days of LOW, LIMITED, or NORMAL steps (2,675 ± 314, 4,759 ± 276, and 8,481 ± 581 steps/day, respectively). Participants completed a 1-hour bout of running on the evening of the second day. High fat tolerance tests were performed on the following morning and postprandial responses were compared.

Results

Following LOW and LIMITED, postprandial incremental area under the curve (AUC) of plasma triglyceride were elevated 22-23%, compared to NORMAL (p<0.05). Whole body fat oxidation was also significantly lower (16-19%, p<0.05, respectively) in LOW and LIMITED, compared to NORMAL. No significant differences were found between LOW and LIMITED.

Conclusion

Two days of step reduction to approximately 2,500-5,000 steps/day in young healthy individuals impairs the ability of an acute bout of exercise to increase fat oxidation and attenuate postprandial increases in plasma triglycerides. This suggests ‘exercise resistance’ occurs in individuals taking approximately 5,000 or fewer steps/day while 8,500 steps/day protects against exercise resistance in fat metabolism. It appears that fat metabolism is influenced more by the inhibitory effects of inactivity than by the stimulating effects derived from 1-hour of moderate intensity running.

Medicine & Science in Sports & Exercise: October 22, 2020. Daily Step Count and Postprandial Fat Metabolism.

[Armed Dingo]

Intressant. 10k+ om dagen ftw.

[Bandid0]

Där ser man.

[TotteShaped4Life]

Har i princip kontorsjobb - men får in 12-15000 steg/dag i snitt.

[utochlöp]

Hur står sig cykling i jämförelse med promenader/steg? Om man cykelpendlar, låt säga 1-2 mil om dagen, är det sannolikt att man får likvärdiga positiva hälsoeffekter som om man går det antal steg som rekommenderas i bland annat studien ovan?