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Maki Riddington
04-17-2003, 10:29 PM
Protein requirements and muscle mass/strength changes during intensive training in novice bodybuilders.

Lemon PW, Tarnopolsky MA, MacDougall JD, Atkinson SA.

School of Biomedical Sciences, Kent State University, Ohio 44242.

This randomized double-blind cross-over study assessed protein (PRO) requirements during the early stages of intensive bodybuilding training and determined whether supplemental PRO intake (PROIN) enhanced muscle mass/strength gains. Twelve men [22.4 +/- 2.4 (SD) yr] received an isoenergetic PRO (total PROIN 2.62 g.kg-1.day-1) or carbohydrate (CHO; total PROIN 1.35 g.kg-1.day-1) supplement for 1 mo each during intensive (1.5 h/day, 6 days/wk) weight training. On the basis of 3-day nitrogen balance (NBAL) measurements after 3.5 wk on each treatment (8.9 +/- 4.2 and -3.4 +/- 1.9 g N/day, respectively), the PROIN necessary for zero NBAL (requirement) was 1.4-1.5 g.kg-1.day-1. The recommended intake (requirement + 2 SD) was 1.6-1.7 g.kg-1.day-1. However, strength (voluntary and electrically evoked) and muscle mass [density, creatinine excretion, muscle area (computer axial tomography scan), and biceps N content] gains were not different between diet treatments. These data indicate that, during the early stages of intensive bodybuilding training, PRO needs are approximately 100% greater than current recommendations but that PROIN increases from 1.35 to 2.62 g.kg-1.day-1 do not enhance muscle mass/strength gains, at least during the 1st mo of training. Whether differential gains would occur with longer training remains to be determined.

body
04-18-2003, 03:54 AM
what year is the study maki?

body
04-18-2003, 04:20 AM
Originally posted by Maki Riddington
Protein requirements and muscle mass/strength changes during intensive training in novice bodybuilders.

Lemon PW, Tarnopolsky MA, MacDougall JD, Atkinson SA.

School of Biomedical Sciences, Kent State University, Ohio 44242.

This randomized double-blind cross-over study assessed protein (PRO) requirements during the early stages of intensive bodybuilding training and determined whether supplemental PRO intake (PROIN) enhanced muscle mass/strength gains. Twelve men [22.4 +/- 2.4 (SD) yr] received an isoenergetic PRO (total PROIN 2.62 g.kg-1.day-1) or carbohydrate (CHO; total PROIN 1.35 g.kg-1.day-1) supplement for 1 mo each during intensive (1.5 h/day, 6 days/wk) weight training. On the basis of 3-day nitrogen balance (NBAL) measurements after 3.5 wk on each treatment (8.9 +/- 4.2 and -3.4 +/- 1.9 g N/day, respectively), the PROIN necessary for zero NBAL (requirement) was 1.4-1.5 g.kg-1.day-1. The recommended intake (requirement + 2 SD) was 1.6-1.7 g.kg-1.day-1. However, strength (voluntary and electrically evoked) and muscle mass [density, creatinine excretion, muscle area (computer axial tomography scan), and biceps N content] gains were not different between diet treatments. These data indicate that, during the early stages of intensive bodybuilding training, PRO needs are approximately 100% greater than current recommendations but that PROIN increases from 1.35 to 2.62 g.kg-1.day-1 do not enhance muscle mass/strength gains, at least during the 1st mo of training. Whether differential gains would occur with longer training remains to be determined.

I like lemon, hes done a fair bit of these studies now.

my constructive critiscm would be

1) trianing 1.5 hours a day. 6 days a week, most of use do not train that long or that often in the gym

2) as the author noted they are newbies. which may effect strenght gians as still learning the skills etc

3) what the ate besides the protein was not noted in the abstract. but probably done in the full article?

4) the group who ate more protien then need to meet zero NBAL. did they get fat due to excess kcals?

noraa
04-19-2003, 05:15 PM
It was published in 1992 in the Journal of Applied Physiology