Determination and validation of peak fat oxidation in endurance-trained men using an upper body graded exercise test
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Determination and validation of peak fat oxidation in endurance-trained men using an upper body graded exercise test. / Hansen, Mikkel Thunestvedt; Romer, Tue; Frandsen, Jacob; Larsen, Steen; Dela, Flemming; Helge, Jorn Wulff.
I: Scandinavian Journal of Medicine & Science in Sports, Bind 29, Nr. 11, 2019, s. 1677-1690.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Determination and validation of peak fat oxidation in endurance-trained men using an upper body graded exercise test
AU - Hansen, Mikkel Thunestvedt
AU - Romer, Tue
AU - Frandsen, Jacob
AU - Larsen, Steen
AU - Dela, Flemming
AU - Helge, Jorn Wulff
PY - 2019
Y1 - 2019
N2 - Peak fat oxidation rate (PFO) and the intensity that elicits PFO (Fat(max)) are commonly determined by a validated graded exercise test (GE) on a cycling ergometer with indirect calorimetry. However, for upper body exercise fat oxidation rates are not well elucidated and no protocol has been validated. Thus, our aim was to test validity and inter-method reliability for determination of PFO and Fat(max) in trained men using a GE protocol applying double poling on a ski-ergometer. PFO and Fat(max) were assessed during two identical GE tests (GE1 and GE2) and validated against separated short continuous exercise bouts (SCE) at 35%, 50%, and 65% of V?O-2peak on the ski-ergometer in 10 endurance-trained men (V?O-2peak: 65.1 +/- 1.0 mL center dot min(-1)center dot kg(-1), mean +/- SEM). Between GE tests no differences were found in PFO (GE1: 0.42 +/- 0.03; GE2: 0.45 +/- 0.03 g center dot min(-1), P = .256) or Fat(max) (GE1: 41 +/- 2%; GE2: 43 +/- 3% of V?O-2peak, P = .457) and the intra-individual coefficient of variation (CV) was 8 +/- 2% and 11 +/- 2% for PFO and Fat(max), respectively. Between GE and SCE tests, PFO (GE(avg): 0.44 +/- 0.03; SCE; 0.47 +/- 0.06 g center dot min(-1), P = .510) was not different, whereas a difference in Fat(max) (GE(avg): 42 +/- 2%; SCE: 52 +/- 4% of V?O-2peak, P = .030) was observed with a CV of 17 +/- 4% and 15 +/- 4% for PFO and Fat(max), respectively. In conclusion, GE has a high day-to-day reliability in determination of PFO and Fat(max) in trained men, whereas it is unclear if PFO and Fat(max) determined by GE reflect continuous exercise in general.
AB - Peak fat oxidation rate (PFO) and the intensity that elicits PFO (Fat(max)) are commonly determined by a validated graded exercise test (GE) on a cycling ergometer with indirect calorimetry. However, for upper body exercise fat oxidation rates are not well elucidated and no protocol has been validated. Thus, our aim was to test validity and inter-method reliability for determination of PFO and Fat(max) in trained men using a GE protocol applying double poling on a ski-ergometer. PFO and Fat(max) were assessed during two identical GE tests (GE1 and GE2) and validated against separated short continuous exercise bouts (SCE) at 35%, 50%, and 65% of V?O-2peak on the ski-ergometer in 10 endurance-trained men (V?O-2peak: 65.1 +/- 1.0 mL center dot min(-1)center dot kg(-1), mean +/- SEM). Between GE tests no differences were found in PFO (GE1: 0.42 +/- 0.03; GE2: 0.45 +/- 0.03 g center dot min(-1), P = .256) or Fat(max) (GE1: 41 +/- 2%; GE2: 43 +/- 3% of V?O-2peak, P = .457) and the intra-individual coefficient of variation (CV) was 8 +/- 2% and 11 +/- 2% for PFO and Fat(max), respectively. Between GE and SCE tests, PFO (GE(avg): 0.44 +/- 0.03; SCE; 0.47 +/- 0.06 g center dot min(-1), P = .510) was not different, whereas a difference in Fat(max) (GE(avg): 42 +/- 2%; SCE: 52 +/- 4% of V?O-2peak, P = .030) was observed with a CV of 17 +/- 4% and 15 +/- 4% for PFO and Fat(max), respectively. In conclusion, GE has a high day-to-day reliability in determination of PFO and Fat(max) in trained men, whereas it is unclear if PFO and Fat(max) determined by GE reflect continuous exercise in general.
KW - exercise testing
KW - Fat(max)
KW - lipid metabolism
KW - peak fat oxidation
KW - test reliability
KW - test validity
KW - upper body exercise
U2 - 10.1111/sms.13519
DO - 10.1111/sms.13519
M3 - Journal article
C2 - 31309617
VL - 29
SP - 1677
EP - 1690
JO - Scandinavian Journal of Medicine & Science in Sports
JF - Scandinavian Journal of Medicine & Science in Sports
SN - 0905-7188
IS - 11
ER -
ID: 226394307