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Home / Issues / № 2, 2014

THE REGULATION OF HEART RATE ACCORDING TO THE DAILY MONITORING IN ADOLESCENTS WITH SCOLIOSIS
Tsarapkin L.V., Perepelkin A.I.

Heart rate variability study involves the allocation and quantitative determination of the effect on the heart rate of each link in its management - the central, autonomic, humoral and reflex [1, 2].

The aim of the study was to determine the characteristics of heart rate variability (HRV) in healthy adolescents with 1-2 group health compared to their peers who are diagnosed with scoliosis 1-2 degrees.

Material and methods.

The study included 73 young people aged 12 to 17 years. Study group consisted of 32 teenagers, aged 14,5 ± 0,48 years, 1-2 health groups (according to the Order № 621 of 30.12.2003 «On the integrated assessment of the health of children»). Control group consisted of 41 teen with a mean age 13,049 ± 0,29 years old, with a history of violations of scoliosis posture type.

Daily heart rate variability was studied using the apparatus «Kardiotekhnika-3.4» (INKART, St. Petersburg) as recommended [2]. Subjected to analysis performance temporal and spectral analysis of heart rate.

Results.

Indicators of temporal analysis of heart rate in adolescents incorrect posture scoliosis type and the control group are shown in Table 1.

Table 1

Indicators of temporal analysis of heart rate in adolescents with scoliosis and the control group (M ± m).

Indicator

The control group (n=41)

Comparative group (n=32)

ΔX, %

VAR, msec-day

1293,951±214,675

1310.310±148,520

1,249

Wake

1156,244±220,607

1206,310±168,069

4,151

Sleep

980,195±88,601

1003,340±62,670

2,307

aVNN, msec-day

738,782±25,540

800,687±28,720

7,731*

Wake

651,391±21,051

685,906±25,456

5,031*

Sleep

879,415±32,684

979,971±40,110

10,262*

SDNN, msec-day

154,878±11,101

195,752±14,091

20,882*

Wake

99,707±8,276

118,161±9,351

15,614*

Sleep

115,683±11,290

151,511±12,833

23,640*

pNN50%-day

18,171±3,303

29,191±3,741

37,745*

Wake

12,021±2,930

17,562±3,342

31,534*

Sleep

28,830±4,690

47,125±4,682

38,820*

rMSSD, msec-day

46,170±5,652

65,662±6,892

29,678*

Wake

36,800±5,210

45,842±5,153

19,717*

Sleep

57,950±7,171

87,161±9,442

33,509*

SDNN ind, msec-day

71,488±6,680

93,625±6,373

23,644*

Wake

66,901±6,890

82,280±6,065

18,690*

Sleep

77,415±7,350

106,121±8,079

26,970*

SDANN, msec-day

136,051±10,621

170,501±14,061

20,206*

Wake

71,170±5,633

82,250±8,670

13,470*

Sleep

75,878±8,993

95,375±11,590

20,440*

СВВР, day

1897,293±165,421

2321,375±170,990

18,270*

Wake

1886,390±185,024

2192,810±169,960

13,970*

Sleep

1938,560±175,120

2503,810±203,702

22,570*

 

Table 2 presents the spectral analysis of heart rate in adolescents in the study groups.

Table 2

Indicators of spectral analysis of heart rate

Indicator

The control group (n=41)

Comparative group

(n=32)

ΔX, %

VLF, мс²-day

3805,171±593,490

5673,401±696,380

32,930*

Wake

3351,630±595,703

4512,801±569,820

25,720*

Sleep

4234,240±627,601

6998,840±1001,795

39,501*

LF, мс²-day

2293,976±386,720

3500,470±475,971

34,470*

Wake

2130,270±401,401

2969,125±442,771

28,250*

Sleep

2507,190±460,051

4079,219±675,352

38,540*

HF, мс²-day

1008,540±202,860

1766,625±306,350

42,901*

Wake

701,585±179,410

945,090±192,320

25,770

Sleep

1384,700±288,880

2613,690±472,280

47,020*

nHF, day

29,440±2,301

33,156±3,430

11,210

Wake

23,290±2,060

23,340±2,180

0,220

Sleep

34,512±2,820

38,906±4,141

11,290

Note: * p <0.05

 

Discussion.

In the analysis of HRV in adolescents diagnosed with scoliosis, a significant decrease of almost all temporal parameters: SDANN decreased by 20,206% (p <0.05) compared with the control group. The magnitude rMSSD decreased by 29,678% (p <0.05), rNN50 - by 37,745% (p <0.05), indicating a predominance of sympathetic influences on the activity of the heart, and the indicator of variations in the scope of the study group and the control group were not significantly changed.

At the same time, there is a reduction in low frequency spectral parameters as well as the high-frequency component HF to 42,9%, LF at 34,47%, VLF by 32.93% (p <0.05) compared with the control group. When analyzing the ratio LF / HF statistically significant difference compared with the control group were found.

Thus, in adolescents diagnosed with scoliosis observed a significant reduction in the total power spectrum without the express imbalance between the parasympathetic and sympathetic autonomic nervous system, which shows a decline in adaptive abilities of the body and is a poor prognostic sign. [2].

Conclusions.

Based on the results of the study it can be concluded that adolescents with scoliosis observed a significant reduction in both temporal and spectral parameters of circadian variability of heart rate without significant imbalance of the sympathetic and parasympathetic divisions of the ANS.



References:
1. Makarov L.M. Russian Bulletin of Perinatology and Pediatrics 2003-№ 6.-p. 34-37.

2. Guide to rhythm disturbances of the heart / red. E.I. Chazov, S.P. Golitsyn // GEOTAR Media, 432 p.



Bibliographic reference

Tsarapkin L.V., Perepelkin A.I. THE REGULATION OF HEART RATE ACCORDING TO THE DAILY MONITORING IN ADOLESCENTS WITH SCOLIOSIS. International Journal Of Applied And Fundamental Research. – 2014. – № 2 –
URL: www.science-sd.com/457-24581 (20.08.2019).