VALIDAÇÃO DE APLICATIVO GRATUITO DE SMARTPHONE PARA MONITORAMENTO DA FREQUÊNCIA CARDÍACA DURANTE EXERCÍCIO EM ESTEIRA

Jaafar, Zulkarnain; Murugan, Aravind Kumar

doi:10.1590/1517-869220192502200793

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Brasil

Revista Brasileira de Medicina do Esporte

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Sumário

Original Article, Cardiology • Rev Bras Med Esporte 25 (2) • Mar-Apr 2019 • https://doi.org/10.1590/1517-869220192502200793 copiar

VALIDAÇÃO DE APLICATIVO GRATUITO DE SMARTPHONE PARA MONITORAMENTO DA FREQUÊNCIA CARDÍACA DURANTE EXERCÍCIO EM ESTEIRA

Autoria SCIMAGO INSTITUTIONS RANKINGS

RESUMO

Objetivo:

O número de pessoas que participam em atividades esportivas de lazer e competições amadoras aumentou acentuadamente nos últimos anos. Os aplicativos gratuitos para monitoramento da frequência cardíaca para smartphone estão disponíveis para uso; no entanto, as informações sobre sua precisão durante o exercício ainda são limitadas. Assim, nosso objetivo foi validar o aplicativo para monitoramento da frequência cardíaca para smartphone durante exercícios em esteira em indivíduos saudáveis.

Métodos:

Estudo experimental prospectivo que testou um aplicativo gratuito para monitoramento da frequência cardíaca “INSTANT HEART RATE: AZUMIO”. Vinte e sete participantes saudáveis foram solicitados a realizar a tarefa em esteira em quatro diferentes cargas de trabalho: caminhada a 3,0 km/h, caminhada rápida a 5,0 km/h, jogging a 7,0 km/h e corrida a 9,0km/h. Os participantes realizaram os exercícios por 3 minutos para cada carga de trabalho, e a frequência cardíaca foi registrada usando o aplicativo para smartphone e ECG em repouso, durante o período de exercício e recuperação a cada intervalo de 60 segundos.

Resultados:

A frequência cardíaca medida pelo aplicativo gratuito para smartphone em repouso, caminhada a 3,0 km/h, caminhada rápida a 5,0 km/h, jogging a 7,0 km/h e fase de recuperação foi precisa, com coeficiente de correlação ≥ 0,95 e erro padrão da estimativa < 1 bpm. No entanto, os valores de correlação durante a execução a 9,0 km/h foram incompatíveis e o erro padrão da estimativa foi > 5 bpm.

Conclusão:

O aplicativo gratuito para smartphone que testamos estima com precisão a frequência cardíaca em repouso, durante o exercício de baixa a moderada intensidade e o período de recuperação, mas torna-se menos preciso durante exercícios de alta intensidade, tornando este aplicativo adequado para uso em atividades internas de intensidade baixa a moderada. Nível de evidência II; Estudos Diagnóstico - Investigação de teste diagnóstico.

Descritores:
Validação de software; Frequência cardíaca; Smartphone; Exercício

Stage of exercise	Smartphone App Mean ± SD	ECG Mean ± SD	Mean Different	Standard estimation error (SEE)	p-value
Stage resting
0 min	77.81 ±11.86	77.81 ±11.86	-	0.001^{^} ^ SEE was significant if value ≤ 5.	-
1 min	77.59 ±13.05	77.52 ±13.08	0.074	0.270^{^} ^ SEE was significant if value ≤ 5.	0.161^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
2 min	78.00 ±12.28	78.04 ±12.29	0.037	0.196^{^} ^ SEE was significant if value ≤ 5.	0.327^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
Stage 1 (2 mph)
3 min	87.41 ±10.71	87.41 ±10.71	0.037	0.001^{^} ^ SEE was significant if value ≤ 5.	0.327^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
4 min	91.19 ±11.93	91.19 ±11.93	0.074	0.001^{^} ^ SEE was significant if value ≤ 5.	0.161^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
5 min	92.59 ±12.93	92.59 ±12.93	0.037	0.001^{^} ^ SEE was significant if value ≤ 5.	0.574^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
Stage 2 (3.5 mph)
6 min	100.52 ±12.42	100.48 ±12.35	0.037	0.185^{^} ^ SEE was significant if value ≤ 5.	0.327^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
7 min	106.26 ±13.08	106.26 ±13.08	-	0.001^{^} ^ SEE was significant if value ≤ 5.	-
8 min	110.33 ±13.22	110.30 ±13.18	0.037	0.328^{^} ^ SEE was significant if value ≤ 5.	0.574^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
Stage 3 (4.5 mph)
9 min	121.15 ±11.54	121.15 ±11.54	0.074	0.272^{^} ^ SEE was significant if value ≤ 5.	0.161^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
10 min	130.63 ±12.51	130.41±12.36	0.222	0.901^{^} ^ SEE was significant if value ≤ 5.	0.207^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
11 min	137.63±11.54	137.41 ±11.73	0.222	0.923^{^} ^ SEE was significant if value ≤ 5.	0.227^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
Stage 4 (6 mph)
12 min	148.00 ±9.66	147.26 ±10.20	0.742	1.365^{^} ^ SEE was significant if value ≤ 5.	0.015
13 min	146.93 ±17.00	154.78 ±9.71	7.851	16.48	0.075^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
14 min	153.30±22.93	162.07 ±8.88	8.778	22.830	0.095^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
Stage Recovery
15 min	135.07±10.00	135.11 ±9.943	0.037	0.188^{^} ^ SEE was significant if value ≤ 5.	0.327^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
16 min	120.07 ±8.22	120.15 ±8.26	0.074	0.392^{^} ^ SEE was significant if value ≤ 5.	0.327^* * Smartphone app heart rate were equal to ECG reading if p>0.05.
17 min	106.07 ±9.01	105.89 ±9.01	0.185	0.978^{^} ^ SEE was significant if value ≤ 5.	0.327^* * Smartphone app heart rate were equal to ECG reading if p>0.05.

Stage of exercise	Correlation coefficient (r) of Heart rate smartphone app and Heart rate ECG	Pearson Correlation Sig. (2-tailed)
Stage resting
0 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
1 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
2min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
Stage 1 (2 mph)
3 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
4 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
5 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
Stage 2 (3.5 mph)
6 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
7 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
8 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
Stage 3 (4.5 mph)
9 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
10 min	0.998^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
11 min	0.997^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
Stage 4 (6 mph)
12 min	0.990^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
13 min	0.310	0.116
14 min	0.217	0.277
Stage Recovery
15 min	1.000^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
16 min	0.999^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.
17 min	0.994^{^^} ^^ correlation coefficient was significant if value ≥ 0.90.	0.001^ p-value was significant if value <0.05.

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[1] Correspondence Zulkarnain Jaafar, Sports Medicine Unit, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur. Malaysia. zulkarnainj@um.edu.my