Many athletes consume a blend of carbohydrate and protein after training.
This supplementation has been reported to increase insulin levels, optimize glycogen resynthesis, and enhance protein synthesis.
However, there is debate about what kind of carbohydrates is best.
Since different forms of carbohydrates have varying glycemic effects, there are arguments for consuming carbs that are either high or low on the glycemic index.
Recently, a study was conducted researching the effects of different carbohydrate sources when mixed with protein after training.
They studied affects on blood glucose availability and insulin levels, markers of anabolism and catabolism, and general immune markers.
40 subjects performed a resistance training workout and then ingested 40 g of whey protein with 120 g of either sucrose, honey powder, or maltodextrin.
A non-supplemented control group was also evaluated.
Blood samples were collected prior to and following exercise as well as 30, 60, 90, and 120 minutes after ingestion of the supplements.
Results: - Glucose concentration 30 minutes following ingestion showed the honey group to be greater than sucrose, maltodextrin, and the control groups.
- No significant differences were observed among groups in glucose area under the curve (AUC) (note: AUC measures the total amount absorbed by the body, regardless of the rate of absorption) values.
- Insulin response for each treatment was significant by time, treatment, and AUC.
- 30-minute peak post-feeding insulin for sucrose, honey, and maltodextrin were greater than the control group as was AUC with no significant differences observed among types of carbohydrate.
- No significant group x time effects were observed among groups in testosterone, cortisol, the ratio of testosterone to cortisol, muscle and liver enzymes, or general markers of immunity.
These results demonstrate that carbohydrate and protein ingestion following exercise significantly influences glucose and insulin concentrations.
Generally, no significant differences were observed among types of carbohydrate ingested on insulin levels.
These findings suggest that each of these forms of carbohydrate can be effective when ingested with protein in an attempt to promote post-exercise anabolic responses.
This supplementation has been reported to increase insulin levels, optimize glycogen resynthesis, and enhance protein synthesis.
However, there is debate about what kind of carbohydrates is best.
Since different forms of carbohydrates have varying glycemic effects, there are arguments for consuming carbs that are either high or low on the glycemic index.
Recently, a study was conducted researching the effects of different carbohydrate sources when mixed with protein after training.
They studied affects on blood glucose availability and insulin levels, markers of anabolism and catabolism, and general immune markers.
40 subjects performed a resistance training workout and then ingested 40 g of whey protein with 120 g of either sucrose, honey powder, or maltodextrin.
A non-supplemented control group was also evaluated.
Blood samples were collected prior to and following exercise as well as 30, 60, 90, and 120 minutes after ingestion of the supplements.
Results: - Glucose concentration 30 minutes following ingestion showed the honey group to be greater than sucrose, maltodextrin, and the control groups.
- No significant differences were observed among groups in glucose area under the curve (AUC) (note: AUC measures the total amount absorbed by the body, regardless of the rate of absorption) values.
- Insulin response for each treatment was significant by time, treatment, and AUC.
- 30-minute peak post-feeding insulin for sucrose, honey, and maltodextrin were greater than the control group as was AUC with no significant differences observed among types of carbohydrate.
- No significant group x time effects were observed among groups in testosterone, cortisol, the ratio of testosterone to cortisol, muscle and liver enzymes, or general markers of immunity.
These results demonstrate that carbohydrate and protein ingestion following exercise significantly influences glucose and insulin concentrations.
Generally, no significant differences were observed among types of carbohydrate ingested on insulin levels.
These findings suggest that each of these forms of carbohydrate can be effective when ingested with protein in an attempt to promote post-exercise anabolic responses.
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