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Titolo:
Exercise training and autonomic nervous system activity in obese individuals
Autore:
Amano, M; Kanda, T; Ue, H; Moritani, T;
Indirizzi:
Kyoto Univ, Grad Sch Human & Environm Studies, Appl Physiol Lab, Sakyo Ku,Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 hysiol Lab, Sakyo Ku,Kyoto 6068501, Japan
Titolo Testata:
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
fascicolo: 8, volume: 33, anno: 2001,
pagine: 1287 - 1291
SICI:
0195-9131(200108)33:8<1287:ETAANS>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEART-RATE-VARIABILITY; TONE-ENTROPY ANALYSIS; ASSOCIATION; PRESSURE; DISEASE; WOMEN; RISK; AGE;
Keywords:
obesity; aerobic exercise training; autonomic nervous system activity; heart rate variability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Moritani, T Kyoto Univ, Grad Sch Human & Environm Studies, Appl Physiol Lab, Sakyo Ku,Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 Sakyo Ku,Kyoto 6068501, Japan
Citazione:
M. Amano et al., "Exercise training and autonomic nervous system activity in obese individuals", MED SCI SPT, 33(8), 2001, pp. 1287-1291

Abstract

Purpose: This study was designed to investigate the effects of 12 Ak of exercise training on autonomic nervous system (ANS) in 18 obese middle-aged men (N = 9) and women (N = 9) (age: 41.6 +/- 1.2 yr; BMI: 27.3 +/- 0.4 kg.m(-2); %fat: 29.6 +/- 1.3%, mean +/- SE). Methods: Each subject participated in an aerobic exercise training at anaerobic threshold (AT). consisting of 30 min/session, 3 times/wk. for 12 consecutive weeks. The ANS activities were assessed by means of power spectral analysis of heart rate variability (HRV) at resting condition before, at 5 wk, and after the exercise program. Results: The exercise training resulted in a significant decrease in body mass. BMI. and %, fat (P < 0.01) but not in lean body mass (P > 0,05) together with a significant increase in the AT V(over dot)O-2 (P < 0.0 1). Our power spectral data indicated that there were significant increases in the low-frequency component associated with the sympathovagal activity (0.03-0.15Hz, 348.5 +/- 66.8 vs 694.7 +/- 91.5 ms(2), P < 0.01), the high-frequency vagal component (0.15-0.4 Hz. 1463 +/- 30.4 vs 347.7 +/- 96.5 m(2), p < 0.05). and the overall autonomic activity as evaluated by total power (0.03-0.4 Hz, 494.8 +/- 88.5 vs 1042.4 +/- 180.9 ms(2). P < 0.01) of HRV after the training. Conclusions: Twelve weeks of exercise training has significantly improved both the sympathetic and parasympathetic nervous activities of theobese individuals with markedly reduced ANS activity, suggesting a possible reversal effect of human ANS functions. These favorable changes may also have an influence on the thermoregulatory control over the obesity.

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Documento generato il 21/09/20 alle ore 16:12:01