*whole paper in pdf  < >
Music structure determines heart rate variability of singers\

All together now: singing is good for your body and soul

`Songs with long phrases achieve the same effect as breathing
exercises in yoga. `In other words, through song we can exercise a
certain control over mental states.' Choir-singing or chanting
football songs or Maharishi Honey Bee song etc `imposes' a calm
and regular breathing pattern on participants, giving their hearts a
workout,.. [:D]  [;)] 
< >


As scientists show that choir practice is healthier than yoga, Sarah
Rainey – who does both – praises the power of song

*"Choir singing is known to promote wellbeing. One reason for this may
be that singing demands a slower than normal respiration, which may in
turn affect heart activity. Coupling of heart rate variability (HRV) to
respiration is called Respiratory sinus arrhythmia (RSA). This coupling
has a subjective as well as a biologically soothing effect, and it is
beneficial for cardiovascular function. RSA is seen to be more marked
during slow-paced breathing and at lower respiration rates (0.1 Hz and
below). In this study, we investigate how singing, which is a form of
guided breathing, affects HRV and RSA. The study comprises a group of
healthy 18 year olds of mixed gender. The subjects are asked to; (1) hum
a single tone and breathe whenever they need to; (2) sing a hymn with
free, unguided breathing; and (3) sing a slow mantra and breathe solely
between phrases. Heart rate (HR) is measured continuously during the
study. The study design makes it possible to compare above three levels
of song structure. In a separate case study, we examine five individuals
performing singing tasks (1–3). We collect data with more advanced
equipment, simultaneously recording HR, respiration, skin conductance
and finger temperature. We show how song structure, respiration and HR
are connected. Unison singing of regular song structures makes the
hearts of the singers accelerate and decelerate simultaneously.
Implications concerning the effect on wellbeing and health are discussed
as well as the question how this inner entrainment may affect perception
and behavior.'

The next task for researchers at the University of Gothenburg, in
Sweden, is to measure how music affects the body in biological terms,
said Dr Vickhoff.He reckons song could be used treat people with
breathing difficulties.\

Fields of Innocents
Personent hodie voces puerulae
Lauudates jucunde
Qui nobis est natus
Summo Deo datus
Ideo. ideo

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