PMID- 24390692
OWN - NLM
STAT- MEDLINE
DCOM- 20141107
LR  - 20220408
IS  - 1439-6327 (Electronic)
IS  - 1439-6319 (Linking)
VI  - 114
IP  - 4
DP  - 2014 Apr
TI  - Energy expenditure and substrate oxidation during and after eccentric cycling.
PG  - 805-14
LID - 10.1007/s00421-013-2816-3 [doi]
AB  - PURPOSE: This study compared concentric cycling (CONC) and two bouts of eccentric 
      cycling (ECC1, ECC2) for substrate utilisation and resting energy expenditure 
      (REE). METHODS: Ten men (28 +/- 8 years) performed each cycling bout for 30 min at 
      60 % of maximal concentric power output, with 2 weeks between bouts. Fat and 
      carbohydrate (CHO) utilisation were assessed during and after cycling, and REE 
      was measured before and 2 days after CONC, and before, 2 and 4 days after ECC1 
      and ECC2, using indirect calorimetry. An oral glucose tolerance test was 
      performed before and 1 day after CONC, and before and 1 and 3 days after ECC1 and 
      ECC2, and both peak and area-under-the-curve (AUC) of the glucose concentration 
      were compared between bouts. RESULTS: Energy expenditure and CHO utilisation 
      during cycling were 36 and 42 % less in ECC1, and 40 and 52 % less in ECC2, than 
      CONC (P < 0.05). Fat utilisation was greater during ECC1 (72 %) and ECC2 (85 %) 
      than CONC, and 48 % greater during ECC2 than ECC1 (P < 0.05). Post-exercise 
      energy expenditure and fat utilisation were less for ECC1 than CONC (30 and 52 %, 
      respectively), but similar between CONC and ECC2. REE did not change from 
      baseline after any bouts. Peak and AUC glucose concentration decreased 3 days 
      after ECC1, but no changes were evident after CONC or ECC2. CONCLUSION: These 
      results show greater fat utilisation during eccentric than concentric cycling at 
      the same workload, and greater fat oxidation during and after secondary eccentric 
      cycling bout without glucose uptake impairment.
FAU - Penailillo, Luis
AU  - Penailillo L
AD  - Centre for Exercise and Sports Science Research, School of Exercise and Health 
      Sciences, Edith Cowan University, Joondalup, WA, Australia, lpenailillo@uft.cl.
FAU - Blazevich, Anthony
AU  - Blazevich A
FAU - Nosaka, Kazunori
AU  - Nosaka K
LA  - eng
PT  - Journal Article
DEP - 20140105
PL  - Germany
TA  - Eur J Appl Physiol
JT  - European journal of applied physiology
JID - 100954790
SB  - IM
MH  - Adult
MH  - Carbohydrate Metabolism
MH  - *Energy Metabolism
MH  - *Exercise
MH  - Humans
MH  - Lipid Metabolism
MH  - Male
EDAT- 2014/01/07 06:00
MHDA- 2014/11/08 06:00
CRDT- 2014/01/07 06:00
PHST- 2013/09/30 00:00 [received]
PHST- 2013/12/24 00:00 [accepted]
PHST- 2014/01/07 06:00 [entrez]
PHST- 2014/01/07 06:00 [pubmed]
PHST- 2014/11/08 06:00 [medline]
AID - 10.1007/s00421-013-2816-3 [doi]
PST - ppublish
SO  - Eur J Appl Physiol. 2014 Apr;114(4):805-14. doi: 10.1007/s00421-013-2816-3. Epub 
      2014 Jan 5.