Regional fettinlagring vid inaktivitet

[King Grub]

We hypothesized that strict inactivity (bed-rest) would lead to regional differences in fat deposition. Twenty-four male subjects underwent 60d bed-rest and remained inactive (n=9), performed resistance exercise plus whole-body vibration (RVE; n=7) or resistance exercise only (RE; n=8). Fat mass was assessed via dual X-ray absorptiometry. In the inactive subjects, fat deposition differed between body regions (P=0.0005) with android region visceral adipose tissue increasing the most (+29% at end bed-rest), followed by remainder of the trunk (from chin to the iliac crest; +10%) and the arms and legs (both +7%). Insulin sensitivity reduced in the inactive subjects at the end of bed-rest (P=0.036). RE did not have a significant impact on regional fat mass changes (P0.055). In RVE, increases in visceral adipose tissue (-14% P=0.028 versus inactive subjects) and in the arms (arms -8%, P=0.011 versus inactive) were not seen. We conclude that inactivity leads to a preferential increase in visceral adipose tissue.

Int J Obes (Lond). 2014 Feb 13. Preferential deposition of visceral adipose tissue occurs due to physical inactivity.

[Knatcharn]

Trodde konsensus redan var att mängden visceralt fett ökar vid inaktivitet. Så vitt jag förstår säger studien det också?

[Bryggan]

Intressant! Innan jag läste det här så trodde jag viceralt fett berodde på:

1. Sjukdom
2. Genetisk påbrå.

Jag trodde däremot inte att det berodde på inaktivitet eftersom fysiskt aktiva överviktiga människor verkar packa fettet mer viceralt! (Egen slutsats)

[exevision]

Borde ju även bero lite på vad de åt, tex mycket fruktos?

[maqan]

Borde ju även bero lite på vad de åt, tex mycket fruktos?

Jag tror inte det spelar så stor roll vid längre perioders inaktivitet. Det är nog snarare vid kortvarig inaktivitet som typen av energisubstrat har någon direkt påverkan.