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Article
Properties of complex-valued power means of random variables and their applications
We consider power means of independent and identically distributed (i.i.d.) non-integrable random variables. The power mean is an example of a homogeneous quasi-arithmetic mean. Under certain conditions, sever...
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Article
Confidence Disc and Square for the Cauchy Distributions
We construct a confidence region of parameters for a sample of size N from the Cauchy distributed random variables. Although the Cauchy distribution has two parameters, namely, a location parameter μ ∈ ℝ and a sc...
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Article
Characterizations of the Maximum Likelihood Estimator of the Cauchy Distribution
This paper gives a new approach for the maximum likelihood estimation of the joint of the location and scale of the Cauchy distribution. We regard the joint as a single complex parameter and derive a new form ...
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Article
The Influence of the COVID-19 Pandemic on Physical Activity and New Incidence of Frailty among Initially Non-Frail Older Adults in Japan: A Follow-Up Online Survey
The objective of this study was to investigate the influence of the COVID-19 pandemic on physical activity (PA) and the incidence of frailty among initially non-frail older adults in Japan.
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Article
Effect of the COVID-19 Epidemic on Physical Activity in Community-Dwelling Older Adults in Japan: A Cross-Sectional Online Survey
The objective of this study was to investigate changes in physical activity (PA) between January (before the COVID-19 epidemic) and April (during the COVID-19 epidemic) 2020 in community-dwelling older adults ...
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Article
Recovery of Physical Activity among Older Japanese Adults Since the First Wave of the COVID-19 Pandemic
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Article
Phase Angle is a Useful indicator for Muscle Function in Older Adults
Phase angle (PhA) can be determined through bioelectrical impedance analysis and is a unique variable for skeletal muscle. The objective of this study was to evaluate the relationship between PhA and muscle ma...
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Article
Plasma Amino Acid Concentrations Are Associated with Muscle Function in Older Japanese Women
Although several previous studies have found benefits for amino acid supplementation in terms of muscle function, the role of plasma amino acid concentrations on sarcopenia are not well addressed yet.
