1 cykling vid deff

[Shoyan]

1 timmes cykling per dag. Lågiintensitet. Kommer det ha någon negativ påverkan på musklerna vid deff?

[nippman]

nej

[nissepelle]

http://www.ncbi.nlm.nih.gov/pubmed/24408998

Abstract

As aerobic exercise (AE) may interfere with adaptations to resistance exercise (RE), this study explored acute and chronic responses to consecutive AE (~45 min cycling) and RE (4 x 7 maximal knee extensions), vs. RE only. Ten men performed acute unilateral AE+RE interspersed by 15 min recovery. The contralateral leg was subjected to RE. This exercise paradigm was then implemented in a 5-wk training program. Protein phosphorylation, gene expression and glycogen content were assessed in biopsies obtained from m. vastus lateralis of both legs immediately before and 3 h after acute RE. Quadricep muscle size and in vivo torque were measured, and muscle samples analyzed for citrate synthase activity and glycogen concentration, before and after training. Acute AE reduced glycogen content (32%; P < 0.05) and increased (P < 0.05) phosphorylation of AMPK (1.5-fold) and rpS6 (1.3-fold). Phosphorylation of p70S6K and 4E-BP1 remained unchanged. Myostatin gene expression was downregulated after acute AE+RE but not RE. Muscle size showed greater (P < 0.05) increase after AE+RE (6%) than RE (3%) training. Citrate synthase activity (18%) and endurance performance (22%) increased (P < 0.05) after AE+RE but not RE. While training increased (P < 0.05) in vivo muscle strength in both legs, normalized and concentric torque increased after RE only. Thus, AE activates AMPK, reduces glycogen stores, and impairs the progression of concentric force, yet muscle hypertrophic responses to chronic RE training appears not to be compromised.

[Reaper123]

Nu vet jag inte när du utför din styrketräning (för hoppas du inte bara ska cykla), men borde rimligen ej bli en negativ påverkan bara du sköter kosten och ej ökar kcalunderskottet via cykling utan istället äter ikapp de förbrända kalorierna så du totalt sett varje dag har samma kcalunderskott som om du inte cyklade.

[AndreasBastard]

Enligt abstraktet ovan så kommer du fördubbla muskeltillväxten om du cyklar i 45 minuter 15 minuter före styrketräningen. Detta är ju tvärtemot vad många här på forumet tror. Hade varit mer intressant om styrketräningen i studien också hade utförts med en muskel som inte aktiveras i AE-delen.