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The effect of boron supplementation on lean body mass, plasma testosterone levels and strength in male weightlifters.

机译：补充硼对男性举重运动员的瘦体重，血浆睾丸激素水平和强度的影响。

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摘要

The effect of boron supplementation on plasma testosterone, lean body mass and strength was investigated in male weightlifters. A double blind pretest - posttest, true experimental design was utilized. Ten male bodybuilders (ages 20-26 yr) were given a 2.5 mg boron supplement, while 9 male bodybuilders (ages 21-27 yr) were given a placebo each day for seven weeks. Plasma total and free testosterone values were determined by radioimmunoassay, lean body mass was determined by hydrostatic weighing, and strength measurements were determined by 1 repetition maximum (1RM) in the squat and bench press on days 1 and 49 of the study. Plasma boron was analyzed by microwave digestion and inductively - coupled argon plasma spectrometry (ICAP).; There was a significant difference in plasma boron due to group membership. The mean plasma boron level of the experimental group increased from (mean {dollar}pm{dollar} SD) 20.1 {dollar}pm{dollar} 7.7 ppb pretest to 32.6 {dollar}pm{dollar} 27.6 ppb posttest, while the control group mean decreased from 15.1 {dollar}pm{dollar} 14.4 ppb pretest to 6.3 {dollar}pm{dollar} 5.5 ppb posttest. Large variations were noted within both groups. An analysis of variance indicated no significant effect of boron supplementation on any of the dependent variables. Both the boron-supplemented group and the control group demonstrated significant increases in total testosterone (p {dollar}<{dollar}.01), lean body mass (p {dollar}<{dollar}.01), 1RM squat (p {dollar}<{dollar}.0001) and 1RM bench press (p {dollar}<{dollar}.01). A 2 x 2 correlation matrix between percent change of each plasma testosterone value and percent change of each strength value revealed no significant relationships. The findings suggest that seven weeks of bodybuilding can increase total testosterone, lean body mass and strength in lesser-trained bodybuilders.
机译：在男性举重运动员中，研究了补充硼对血浆睾丸激素，瘦体重和力量的影响。采用了双盲前测-后测，真正的实验设计。 10名男性健美运动员（20-26岁）接受了2.5 mg硼补充剂，而9名男性健美运动员（21-27岁）每天接受安慰剂治疗7周。在研究的第1天和第49天，通过下蹲和卧推中的放射性重复测定法测定血浆总和游离睾丸激素值，通过静水称重测定瘦体重，并通过1次重复最大值（1RM）确定强度测量值。通过微波消解和电感耦合氩等离子体光谱法（ICAP）对血浆硼进行了分析。由于组成员关系，血浆硼存在显着差异。实验组的血浆平均硼水平从（平均）（SD）的20.1 {pm}（pm）上升到pppp的7.7 ppb，而对照组则为22.6 ppb。平均值从测试前的14.1 ppb（美元）降低到测试后的6.3 {pm}美元{pm}和测试后的6.3 ppb。两组之间均存在较大差异。方差分析表明，硼对任何因变量没有显着影响。补充硼的组和对照组的总睾丸激素（p {dollar} <{dollar} .01），瘦体重（p {dollar} <{dollar} .01），1RM下蹲（p {美元} <{dollar} .0001）和1RM卧推（p {dollar} <{dollar} .01）。每个血浆睾丸激素值的百分比变化与每个强度值的百分比变化之间的2 x 2相关矩阵显示无显着关系。研究结果表明，健美的七个星期可以增加训练有素的健美运动员的总睾丸激素，瘦体重和力量。

著录项

  • 作者

    Ferrando, Arnold A.;

  • 作者单位

    The Florida State University.;

  • 授予单位 The Florida State University.;
  • 学科 Health Sciences Nutrition.
  • 学位 Ph.D.
  • 年度 1991
  • 页码 116 p.
  • 总页数 116
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 预防医学、卫生学;
  • 关键词

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