Key result
Water-bed massage vibrations concentrated at 4Hz or less, with subjective relaxation strongly correlating to heart rate-based analysis and subjects' weight.
Why the study?
Does water-bed massage improve relaxation in human subjects?
Observational
Does water-bed massage improve relaxation in human subjects?
Answers are grounded in this paper and cite their sources.
Water-bed massage induces relaxation that can be objectively measured using heart rate sensors and correlates with subjective evaluation.
In recent years, water massage bed for full body massage has been used in physiotherapy effectively. Compared with other physiotherapy equipment, water massage bed is particularly useful since it can directly massage the destined area on the subject, which leads to improvement in relieving muscle strain and provides a psychological relaxation. In this study, we use a heart rate sensor as well as an accelerometer and a laser range finder to measure and evaluate changes of relaxation in the human body before and during the massage. As a result, the water massage bed vibrations observed concentrated at 4Hz or less. We observed that subjective evaluation is strongly correlated to the heart rate based relaxation analysis and subjects' weight. In addition, the result of the subjective evaluation is influenced by the changes in autonomic nerve activity in the first 30 seconds of the massage.
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Seki et al. (2016) reported an observational. Water-bed massage vs. Before massage was evaluated on Changes of relaxation in the human body. Water-bed massage vibrations concentrated at 4Hz or less, with subjective relaxation strongly correlating to heart rate-based analysis and subjects' weight.
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