| Full text | |
| Author(s): Show less - |
Saunders, B.
[1]
;
de Oliveira, L. F.
[1]
;
da Silva, R. P.
[1]
;
de Salles Painelli, V.
[1]
;
Goncalves, L. S.
[1]
;
Yamaguchi, G.
[1]
;
Mutti, T.
[1]
;
Maciel, E.
[2]
;
Roschel, H.
[1, 2]
;
Artioli, G. G.
[1, 2]
;
Gualano, B.
[1, 2]
Total Authors: 11
|
| Affiliation: | [1] Univ Sao Paulo, Appl Physiol & Nutr Res Grp, Sao Paulo - Brazil
[2] Univ Sao Paulo, Sch Med, Rheumatol Div, Sao Paulo - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS; v. 27, n. 11, p. 1240-1247, NOV 2017. |
| Web of Science Citations: | 35 |
| Abstract | |
We investigated the effects of supplement identification on exercise performance with caffeine supplementation. Forty-two trained cyclists (age 37 +/- 8years, body mass {[}BM] 74.3 +/- 8.4kg, height 1.76 +/- 0.06m, maximum oxygen uptake 50.0 +/- 6.8mL/kg/min) performed a similar to 30min cycling time-trial 1h following either 6mg/kgBM caffeine (CAF) or placebo (PLA) supplementation and one control (CON) session without supplementation. Participants identified which supplement they believed they had ingested (caffeine, placebo, don't know) pre- and post-exercise. Subsequently, participants were allocated to subgroups for analysis according to their identifications. Overall and subgroup analyses were performed using mixed-model and magnitude-based inference analyses. Caffeine improved performance vs PLA and CON (P0.001). Correct pre- and post-exercise identification of caffeine in CAF improved exercise performance (+4.8 and +6.5%) vs CON, with slightly greater relative increases than the overall effect of caffeine (+4.1%). Performance was not different between PLA and CON within subgroups (all P>0.05), although there was a tendency toward improved performance when participants believed they had ingested caffeine post-exercise (P=0.06; 87% likely beneficial). Participants who correctly identified placebo in PLA showed possible harmful effects on performance compared to CON. Supplement identification appeared to influence exercise outcome and may be a source of bias in sports nutrition. (AU) | |
| FAPESP's process: | 14/11948-8 - Life without carnosine: development and characterization of a KO rat model for studying the physiological role of carnosine and its implications to physical exercise and muscle metabolism |
| Grantee: | Guilherme Giannini Artioli |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 11/19513-2 - Effects of Chronic Beta-Alanine Supplementation with and without Acute Sodium Bicarbonate Ingestion on Peak Muscle Carnosine Concentration, Washout and High-Intensity Exercise Performance |
| Grantee: | Bryan Saunders |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 13/14746-4 - Carnosine metabolism in skeletal muscle: a multi-approach study |
| Grantee: | Bruno Gualano |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/04806-0 - Effects of 12 weeks of high-intensity intermittent training on intramuscular carnosine concentrations |
| Grantee: | Vitor de Salles Painelli |
| Support Opportunities: | Scholarships in Brazil - Doctorate |