¿Cambia nuestro ritmo cardíaco con la altura? / Does our heart rate change with height?
¿Cambia nuestro ritmo
cardíaco con la altura? (English version below)
There is no difference in the number of pulsations between Oakville and Moshi even though there are a few meters’ gap in altitude between those places. But once we started to climb the mountain and gaining more altitude, the pulsations seem to increase, although the rise of them does not seem to be very strict with the height. In the highest camp we slept (Barafu) the pulsations of Marcela, Federica and Rodrigo were down again to normal level, while mine were barely higher.
Para comprobar en
cuerpo y alma cómo cambia el ritmo cardiaco con la altura, realizamos un modesto
experimento cuando subimos al Kilimanjaro. El experimento consistió en tomarnos
las pulsaciones en reposo todos los días, comenzando antes de emprender el
viaje para tener una referencia contra la cual comparar.
La siguiente tabla
muestra las pulsaciones de los cuatro antes del viaje y durante la subida al
Kilimanjaro. Cada quién se tomó sus propias pulsaciones durante todo el tiempo.
Las pulsaciones las tomamos antes de ir a dormir y durante el desayuno con
todos relativamente en reposo (son comparables). Todas las muestras fueron 10
segundos de reloj, lo que da un error de conteo de +/- 6 pulsaciones por
minuto.
Pulsaciones por minuto
– Beats per minute
|
|||||||
Fecha - Date
|
Hora - Hour
|
Lugar - Place
|
Altitud(e) (m)
|
Marcela msichana
|
Federica mama
|
Rodrigo mtoto
|
Ernesto baba
|
5-Ago-2016
|
11:40 PM
|
Oakville
|
173
|
72
|
60
|
54
|
66
|
6-Ago-2016
|
9:00 AM
|
Oakville
|
173
|
66
|
60
|
54
|
54
|
6-Ago-2016
|
11:54 PM
|
Oakville
|
173
|
66
|
66
|
66
|
60
|
7-Ago-2016
|
9:00 AM
|
Oakville
|
173
|
72
|
60
|
60
|
60
|
7-Ago-2016
|
11:00 PM
|
Oakville
|
173
|
72
|
66
|
54
|
54
|
11-Ago-2016
|
9:00 AM
|
Moshi
|
941
|
72
|
66
|
60
|
60
|
11-Ago-2016
|
9:35 PM
|
Moshi
|
941
|
78
|
60
|
60
|
60
|
13-Ago-2016
|
8:30 AM
|
Mti Mbukma
|
2,750
|
78
|
72
|
66
|
60
|
13-Ago-2016
|
6:40 PM
|
Shira Camp I
|
3,532
|
90
|
84
|
66
|
66
|
14-Ago-2016
|
8:15 AM
|
Shira Camp I
|
3,532
|
84
|
72
|
72
|
72
|
15-Ago-2016
|
8:00 AM
|
Shira Camp II
|
3,850
|
84
|
78
|
72
|
78
|
16-Ago-2016
|
5:45 PM
|
Karanga Valley
|
4,000
|
72
|
66
|
66
|
72
|
17-Ago-2016
|
8:50 AM
|
Karanga Valley
|
4,000
|
84
|
78
|
72
|
66
|
17-Ago-2016
|
6:25 PM
|
Barafu Camp
|
4,670
|
66
|
66
|
60
|
72
|
Entre Moshi y Oakville
no parece haber diferencia en el número de pulsaciones a pesar de que si hay unos
cuantos metros de altura más. Pero una vez comenzado el ascenso a la montaña las
pulsaciones parecen aumentar, aunque el ascenso de ellas no parece regirse muy
estrictamente con la altura, al punto que en el campamento más alto (Barafu)
las pulsaciones de Marcela, Federica y Rodrigo vuelven a parecer normales y las
mías apenas más altas.
La correlación
más alta entre la altura y latidos del corazón está en mi muestra (0.79),
seguida por la de Rodrigo y Federica en 0.7 mientras que la de Marcela muestra
una correlación de 0.5. Por supuesto, somos una muestra muy pequeña, y con muy pocos
datos. Pero me pregunto si no hay también un factor de adaptación a la altura
que hace que a la medida que estás más tiempo en la montaña tus latidos bajen.
Bien podría ser que tu cuerpo se adapte a la altura produciendo más glóbulos
rojos, o algo por el estilo.
Si ese fuese el caso,
los chamos y Federica se adaptaron más rápido que yo a las condiciones
ambientales (supongo que no es de extrañar por la edad) y por ello se rompe la
correlación entre altura y latidos cardiacos. ¿Qué dicen
los expertos? ¿Hay alguno entre los lectores?
Does our heart rate change with height?
To test by ourselves how the heart rate changes with the
altitude, we performed a humble experiment when we climbed Kilimanjaro. The
experiment consisted in recording our own pulsations every day when climbing
the mountain. To have a reference to compare with, we began registering our
heart rates some days before embarking to Africa.
The table above shows our cardiac beats before the trip
and during the ascent to Kilimanjaro. Everyone
took their own heartbeats all the time. We
took the pulsations before going to sleep and during breakfast standing
relatively at rest (so, measures are comparable). All
samples were taken in 10 seconds’ lapses, giving a potential error count of +/-
6 beats per minute.There is no difference in the number of pulsations between Oakville and Moshi even though there are a few meters’ gap in altitude between those places. But once we started to climb the mountain and gaining more altitude, the pulsations seem to increase, although the rise of them does not seem to be very strict with the height. In the highest camp we slept (Barafu) the pulsations of Marcela, Federica and Rodrigo were down again to normal level, while mine were barely higher.
The highest correlation between altitude and the heartbeat
was in my sample (0.79), followed by that of Rodrigo and Federica in 0.7, while
the sample of Marcela shows the lowest correlation of 0.5. Of
course, we have a very small sample to get any conclusions, but I wonder if
there is also an adaptation factor that can explain the decline in heartbeats
of the last day… something like as you pass more days in the mountain your
heartbeat goes down. It
could be that your body adapts to the altitude by producing more red blood cells,
or something like that.
If that were the case,
the children and Federica adapted faster than I did to the environmental
conditions (I suppose it is not surprising due the age gap) and for that reason
the correlation between height and heartbeats gets broken last day. Do you have an
expert opinion?
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