Fluid electrolyte changes in trained subjects after water loading and during restriction of muscular activity and chronic hyperhydration

1996 ◽  
Vol 54 (3) ◽  
pp. 251-271 ◽  
Author(s):  
Yan G. Zorbas ◽  
Youri F. Federenko ◽  
Konstantin A. Naexu
Keyword(s):  
Muscular Activity ◽  
Trained Subjects ◽  
Water Loading ◽  
Chronic Hyperhydration

Daily copper supplement effects on copper balance in trained subjects during prolonged restriction of muscular activity

1999 ◽  
Vol 69 (2) ◽  
pp. 81-98 ◽  
Author(s):  
Yan G. Zorbas ◽  
Kirill P. Charapakin ◽  
Vassil J. Kakurin ◽  
Nikolai K. Kuznetsov ◽  
Maxim A. Federov ◽  
...  
Keyword(s):  
Muscular Activity ◽  
Trained Subjects ◽  
Copper Balance

Maximal oxygen uptake and heart rate in various types of muscular activity

1961 ◽  
Vol 16 (6) ◽  
pp. 977-981 ◽  
Author(s):  
Per-Olof 0Åstrand ◽  
Bengt Saltin
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Supine Position ◽  
Maximal Oxygen Uptake ◽  
Muscular Activity ◽  
Bicycle Ergometer ◽  
Maximal Heart Rate ◽  
Similar Reduction ◽  
Trained Subjects ◽  
Arm Work

Seven subjects performed maximal work of various types. The following exercises were studied: a) cycling a bicycle ergometer in a sitting and b) supine position, c) simultaneous arm and leg work on bicycle ergometers, d) running on a treadmill, e) skiing, f) swimming, and g) arm work (cranking). Vo2 was a few per cent higher in running uphill than in cycling ( a), cranking plus cycling ( c), and skiing, in which events similar values were attained. Heart rate was similar in those types of exercise mentioned ( a, c, d, e). Supine cycling ( b) gave a maximal Vo2 that was about 15% lower than in sitting cycling. A similar reduction in maximal Vo2 was noted in swimming. Maximal work with the arms ( g) gave an oxygen uptake that was about 70% of maximal Vo2 when cycling ( a). It is concluded that the aerobic capacity and maximal heart rate are the same in maximal running or cycling, at least in well-trained subjects. Submitted on June 23, 1961

Magnesium loading effect on magnesium deficiency in endurance-trained subjects during prolonged restriction of muscular activity

1998 ◽  
Vol 63 (2) ◽  
pp. 149-166 ◽  
Author(s):  
Yan G. Zorbas ◽  
Andrei G. Kakurin ◽  
Nikolai K. Kuznetsov ◽  
Maxim A. Federov ◽  
Yuri Y. Yaroshenko
Keyword(s):  
Magnesium Deficiency ◽  
Muscular Activity ◽  
Trained Subjects ◽  
Loading Effect

Zinc metabolism in endurance-trained volunteers during prolonged restriction of muscular activity and chronic hyperhydration

1995 ◽  
Vol 48 (2) ◽  
pp. 185-196 ◽  
Author(s):  
Yan G. Zorbas ◽  
Mitsui A. Sokiguchi ◽  
Olav A. Johanson ◽  
Youri F. Federenko
Keyword(s):  
Muscular Activity ◽  
Zinc Metabolism ◽  
Chronic Hyperhydration

Reliability of the Minimum Masking Level as Outcome Variable in Tinnitus Clinical Research

2020 ◽  
Vol 29 (3) ◽  
pp. 429-435
Author(s):  
Patricia C. Mancini ◽  
Richard S. Tyler ◽  
Hyung Jin Jun ◽  
Tang-Chuan Wang ◽  
Helena Ji ◽  
...  
Keyword(s):  
Standard Deviation ◽  
High Frequency ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Outcome Variable ◽  
Reliable Estimate ◽  
Moderate Correlation ◽  
Trained Subjects ◽  
The Relationship ◽  
Minimum Intensity

Purpose The minimum masking level (MML) is the minimum intensity of a stimulus required to just totally mask the tinnitus. Treatments aimed at reducing the tinnitus itself should attempt to measure the magnitude of the tinnitus. The objective of this study was to evaluate the reliability of the MML. Method Sample consisted of 59 tinnitus patients who reported stable tinnitus. We obtained MML measures on two visits, separated by about 2–3 weeks. We used two noise types: speech-shaped noise and high-frequency emphasis noise. We also investigated the relationship between the MML and tinnitus loudness estimates and the Tinnitus Handicap Questionnaire (THQ). Results There were differences across the different noise types. The within-session standard deviation averaged across subjects varied between 1.3 and 1.8 dB. Across the two sessions, the Pearson correlation coefficients, range was r = .84. There was a weak relationship between the dB SL MML and loudness, and between the MML and the THQ. A moderate correlation ( r = .44) was found between the THQ and loudness estimates. Conclusions We conclude that the dB SL MML can be a reliable estimate of tinnitus magnitude, with expected standard deviations in trained subjects of about 1.5 dB. It appears that the dB SL MML and loudness estimates are not closely related.

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