Blood plasma concentrations of microelements in endurance trained volunteers during hypokinesia and chronic hyperhydration |
| |
Authors: | Yan G Zorbas Youri F Federenko Konstantin A Naexu |
| |
Institution: | 1. Hypokinetic Physiology Lab., European Institute of Environmental Cybernetics, 4, Kerasundos Road, GR-162 32, Athens, Greece
|
| |
Abstract: | The objective of this investigation was to determine the effect of daily intake of fluid and salt supplementation (FSS) on
increased urinary losses of microelements that developed during hypokinesia (decreased number of walking steps/d). The studies
were performed on 30 endurance-trained male volunteers aged 23–26 yr, with an averaged maximum oxygen uptake of 65 mL/kg/min
during 364 d of hypokinesia (HK). All volunteers were divided into three equal groups: Ten volunteers were placed continuously
under an average of 10,000 running steps/d (14.2 km/d) (control subjects), ten volunteers subjected continuously to HK without
the use of FSS (hypokinetic subjects), and ten volunteers were continuously submitted to HK and consumed daily FSS (hyperhydrated
subjects). For the simulation of the hypokinetic effect the hypokinetic and hyperhydrated volunteers were kept under an average
of 3,000 walking steps/d (2.7 km/d) for 364 d. Prior to their exposure to HK the volunteers were on an average of 10,000 running
steps/d (14.2 km/d). During the prehypokinetic period of 60 d and during the hypokinetic period of 364 d were determined renal
excretion of microelements responses of endurance-trained volunteers. In the hyperhydrated volunteers urinary excretion of
iron, zinc, copper, manganese, cobalt, nickel, lead, tin, chromium, aluminum, molybdenum, and vanadium decreased, whereas
in the hypokinetic volunteers it increased significantly. It was concluded that chronic hyperhydration may be used to attenuate
urinary excretion of microelements in endurance-trained volunteers during prolonged restriction of muscular activity. |
| |
Keywords: | Index Entries" target="_blank">Index Entries Microelements excretion hypokinesia hyperhydration trained subjects |
本文献已被 SpringerLink 等数据库收录! |
|