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Recovery from a cycling time trial is enhanced with carbohydrate-protein supplementation vs. isoenergetic carbohydrate supplementation.

Berardi JM, Noreen EE, Lemon PW - J Int Soc Sports Nutr (2008)

Bottom Line: However, performance and power decreases between PM(ex) and AM(ex) were significantly greater (p </= 0.05) with CHO (-1.05 +/- 0.44 km and -16.50 +/- 6.74 W) vs C+P (-0.30 +/- 0.50 km and -3.86 +/- 6.47 W).Fat oxidation estimated from RER values was significantly greater (p </= 0.05) in the C+P vs CHO during the PM(ex), despite a higher average workload in the C+P group.Under these experimental conditions, liquid C+P ingestion immediately after exercise increases fat oxidation, increases recovery, and improves subsequent same day, 60 min efforts relative to isoenergetic CHO ingestion.

View Article: PubMed Central - HTML - PubMed

Affiliation: Precision Nutrition, Inc, Toronto, Ontario, Canada. jb@johnberardi.com.

ABSTRACT

Background: In this study we assessed whether a liquid carbohydrate-protein (C+P) supplement (0.8 g/kg C; 0.4 g/kg P) ingested early during recovery from a cycling time trial could enhance a subsequent 60 min effort on the same day vs. an isoenergetic liquid carbohydrate (CHO) supplement (1.2 g/kg).

Methods: Two hours after a standardized breakfast, 15 trained male cyclists completed a time trial in which they cycled as far as they could in 60 min (AM(ex)) using a Computrainer indoor trainer. Following AM(ex), subjects ingested either C+P, or CHO at 10, 60 and 120 min, followed by a standardized meal at 4 h post exercise. At 6 h post AM(ex) subjects repeated the time trial (PM(ex)).

Results: There was a significant reduction in performance for both groups in PM(ex) versus AM(ex). However, performance and power decreases between PM(ex) and AM(ex) were significantly greater (p

Conclusion: Under these experimental conditions, liquid C+P ingestion immediately after exercise increases fat oxidation, increases recovery, and improves subsequent same day, 60 min efforts relative to isoenergetic CHO ingestion.

No MeSH data available.


Serum lactate concentration during AMex and PMex. During the recovery period between AMex and PMex nutritional interventions included early post exercise carbohydrate + protein supplements (C+P) and a later solid meal and early carbohydrate supplement (CHO) and a later solid meal. Serum lactate concentration decreased at each time point from AM15 to PM15 (p ≤ 0.05) but there were no other differences over time or between conditions.
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Figure 4: Serum lactate concentration during AMex and PMex. During the recovery period between AMex and PMex nutritional interventions included early post exercise carbohydrate + protein supplements (C+P) and a later solid meal and early carbohydrate supplement (CHO) and a later solid meal. Serum lactate concentration decreased at each time point from AM15 to PM15 (p ≤ 0.05) but there were no other differences over time or between conditions.

Mentions: There was a significant time effect with serum glucose concentration decreasing from AM45 to PM15 in both groups (Fig 3). Similarly, there was a significant time effect for serum lactate, with both groups decreasing from AM15 to PM 15 (Fig 4). Planned comparisons of AM15 vs AM45 and PM15 vs PM45 (2 × 2 ANOVA) revealed no group, time or interaction effects.


Recovery from a cycling time trial is enhanced with carbohydrate-protein supplementation vs. isoenergetic carbohydrate supplementation.

Berardi JM, Noreen EE, Lemon PW - J Int Soc Sports Nutr (2008)

Serum lactate concentration during AMex and PMex. During the recovery period between AMex and PMex nutritional interventions included early post exercise carbohydrate + protein supplements (C+P) and a later solid meal and early carbohydrate supplement (CHO) and a later solid meal. Serum lactate concentration decreased at each time point from AM15 to PM15 (p ≤ 0.05) but there were no other differences over time or between conditions.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2626573&req=5

Figure 4: Serum lactate concentration during AMex and PMex. During the recovery period between AMex and PMex nutritional interventions included early post exercise carbohydrate + protein supplements (C+P) and a later solid meal and early carbohydrate supplement (CHO) and a later solid meal. Serum lactate concentration decreased at each time point from AM15 to PM15 (p ≤ 0.05) but there were no other differences over time or between conditions.
Mentions: There was a significant time effect with serum glucose concentration decreasing from AM45 to PM15 in both groups (Fig 3). Similarly, there was a significant time effect for serum lactate, with both groups decreasing from AM15 to PM 15 (Fig 4). Planned comparisons of AM15 vs AM45 and PM15 vs PM45 (2 × 2 ANOVA) revealed no group, time or interaction effects.

Bottom Line: However, performance and power decreases between PM(ex) and AM(ex) were significantly greater (p </= 0.05) with CHO (-1.05 +/- 0.44 km and -16.50 +/- 6.74 W) vs C+P (-0.30 +/- 0.50 km and -3.86 +/- 6.47 W).Fat oxidation estimated from RER values was significantly greater (p </= 0.05) in the C+P vs CHO during the PM(ex), despite a higher average workload in the C+P group.Under these experimental conditions, liquid C+P ingestion immediately after exercise increases fat oxidation, increases recovery, and improves subsequent same day, 60 min efforts relative to isoenergetic CHO ingestion.

View Article: PubMed Central - HTML - PubMed

Affiliation: Precision Nutrition, Inc, Toronto, Ontario, Canada. jb@johnberardi.com.

ABSTRACT

Background: In this study we assessed whether a liquid carbohydrate-protein (C+P) supplement (0.8 g/kg C; 0.4 g/kg P) ingested early during recovery from a cycling time trial could enhance a subsequent 60 min effort on the same day vs. an isoenergetic liquid carbohydrate (CHO) supplement (1.2 g/kg).

Methods: Two hours after a standardized breakfast, 15 trained male cyclists completed a time trial in which they cycled as far as they could in 60 min (AM(ex)) using a Computrainer indoor trainer. Following AM(ex), subjects ingested either C+P, or CHO at 10, 60 and 120 min, followed by a standardized meal at 4 h post exercise. At 6 h post AM(ex) subjects repeated the time trial (PM(ex)).

Results: There was a significant reduction in performance for both groups in PM(ex) versus AM(ex). However, performance and power decreases between PM(ex) and AM(ex) were significantly greater (p

Conclusion: Under these experimental conditions, liquid C+P ingestion immediately after exercise increases fat oxidation, increases recovery, and improves subsequent same day, 60 min efforts relative to isoenergetic CHO ingestion.

No MeSH data available.