作者lenti (啄木鸟)
看板Dietician
标题Re: [闲聊] 在健身书上看到的
时间Fri Dec 12 14:29:04 2008
书上说的应该没有错.
需要那麽高的prot intake是因为有证据显示, 摄取 30% prot 时可降低在能量消
耗过程中的 lean mass loss.
一般对健美选手的营养摄取如下:
CHO 55 ~ 60 %
Prot. 25 ~ 30 %
Fat 15 ~ 20 %
有兴趣可以参考这篇revirew 的文章.
Sports Med. 2004;34(5):317-27
Macronutrient considerations for the sport of bodybuilding.
Abstract
Participants in the sport of bodybuilding are judged by appearance rather
than performance. In this respect, increased muscle size and definition are
critical elements of success. The purpose of this review is to evaluate the
literature and provide recommendations regarding macronutrient intake during
both 'off-season' and 'pre-contest' phases. Body builders attempt to increase
muscle mass during the off-season (no competitive events), which may be the
great majority of the year. During the off-season, it is advantageous for the
bodybuilder to be in positive energy balance so that extra energy is
available for muscle anabolism. Additionally, during the off-season, adequate
protein must be available to provide amino acids for protein synthesis. For
6-12 weeks prior to competition, body builders attempt to retain muscle mass
and reduce body fat to very low levels. During the pre-contest phase, the
bodybuilder should be in negative energy balance so that body fat can be
oxidised. Furthermore, during the pre-contest phase, protein intake must be
adequate to maintain muscle mass. There is evidence that a relatively high
protein intake (approximately 30% of energy intake) will reduce lean mass
loss relative to a lower protein intake (approximately 15% of energy intake)
during energy restriction. The higher protein intake will also provide a
relatively large thermic effect that may aid in reducing body fat. In both
the off-season and pre-contest phases, adequate dietary carbohydrate should
be ingested (55-60% of total energy intake) so that training intensity can be
maintained. Excess dietary saturated fat can exacerbate coronary artery
disease; however, low-fat diets result in a reduction in circulating
testosterone. Thus, we suggest dietary fats comprise 15-20% of the body
builders' off-season and pre-contest diets.Consumption of protein/amino acids
and carbohydrate immediately before and after training sessions may augment
protein synthesis, muscle glycogen resynthesis and reduce protein
degradation. The optimal rate of carbohydrate ingested immediately after a
training session should be 1.2 g/kg/hour at 30-minute intervals for 4 hours
and the carbohydrate should be of high glycaemic index. In summary, the
composition of diets for body builders should be 55-60% carbohydrate, 25-30%
protein and 15-20% of fat, for both the off-season and pre-contest phases.
During the off-season the diet should be slightly hyperenergetic
(approximately 15% increase in energy intake) and during the pre-contest
phase the diet should be hypoenergetic (approximately 15% decrease in energy
intake).
※ 引述《catwalks (我爱方啾啾)》之铭言:
: 出自 最新健美运动详解 (作者黄阿文)
: 增加肌肉的Tips:
: 1.不断的吃 一天吃五到六餐
: 让身体不断的处在同化作用的状态中
: 2.每天蛋白质最少 2g
: 三大营养素比例: CHO 45%
: prot 35%
: Fat 20%
: 看到觉得有点疑惑
: 蛋白质可以吃这麽多 不会有问题吗?
: 吃多蛋白质可以辅助运动 增加肌肉 但是肾脏不会坏吗?
: 我才疏学浅 因此想问问各位先进的看法~
: 运动员吃的东西都这样搞吗?
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.112.125.66
1F:→ gloomy1227:所以说 那只适合有达到那种运动负荷量的人用的比例@@ 12/12 16:02
2F:推 catwalks:了解 谢谢 12/13 10:36
3F:→ x0224al:人一天所需摄取的蛋质~只会比你想的还要多~蛋白质最主要的 12/14 03:00
4F:→ x0224al:还是修复身体组织~而用食物的方式补充~会补充到太多不比要 12/14 03:01
5F:→ x0224al:的热量跟脂质~运动员用大量的运动可以加速代谢~过盛的营养 12/14 03:05
6F:推 kaerutoh:要吃大量的蛋白质而又怕肝肾过劳的话就同时服用大量的 12/14 18:35
7F:→ kaerutoh:蛋白质酵素(木瓜酵素、凤梨酵素等)或Pre-digested的类型 12/14 18:37
8F:推 SuckPenis:多吃蛋白质酵素有用喔? 蛋白质酵素还不是就是蛋白质 12/14 20:06
9F:推 kaerutoh:哈哈... 基本上可以减少身体对分解蛋白质为胺基酸的压力 12/15 03:23
10F:推 SuckPenis:那就是蛋白质阿 和酵素有啥关系...... 12/15 21:30
11F:→ kaerutoh:身体需要的不是蛋白质,而是胺基酸。如果大分子的蛋白质 12/15 22:32
12F:→ kaerutoh:混进你的血液、肝脏等就会使你的身体受到伤害。因此你的 12/15 22:34
13F:→ kaerutoh:肝脏和肾脏为了处理血液中这些大分子的蛋白质就会造成很 12/15 22:36
14F:→ kaerutoh:大的负担。而且那些代谢不完整的蛋白质通常都会变成胺毒 12/15 22:38
15F:→ kaerutoh:和尿酸(所谓的「普林体」)等过量而对身体有害的物质。 12/15 22:40
16F:→ kaerutoh:当然,其他营养素(维生素、矿物质等)依然不能少喔 ^^ 12/15 22:42
17F:→ SuckPenis:....我的生理学要重修了吗........... 12/16 06:46
18F:推 kaerutoh:不是~ 是我在嘴炮 XDDDDDD 12/17 00:14