The beneficial effects of acute strength training on sway activity and sway regularity in healthy older men: Evidence from a posturography study

NEUROSCIENCE LETTERS

卷:749

Article

Drozdova-Statkeviciene, Margarita¹  Cesnaitiene, Vida Janina¹  Levin, Oron^1,2  Pauwels, Lisa²  Pukenas, Kazimieras¹  Helsen, Werner F.²  Staes, Filip³  Masiulis, Nerijus¹ 

[1] Lithuanian Sports Univ, Sporto Str 6, LT-44221 Kaunas, Lithuania

[2] Katholieke Univ Leuven, Dept Movement Sci, Movement Control & Neuroplast Res Grp, B-3001 Heverlee, Belgium

[3] Katholieke Univ Leuven, Dept Rehabil Sci, Musculoskeletal Rehabil Res Grp, B-3001 Heverlee, Belgium

关键词: Balance control;    Single bout of exercise;    Aging;    Postural stability;    Attention;   

DOI  :  10.1016/j.neulet.2021.135718

来源: Elsevier

【 摘 要 】

The effects of acute strength training on balance control were studied in healthy older human men (age-range 60-77y). Participants performed the Tandem Romberg Stance while completing an attention demanding cognitive task (Mathematical Counting) before and after a single acute strength training session applied to the lower limb musculature (experimental group; n = 19) or no intervention (control group; n = 18). Balance stability and the automaticity of balance control were estimated through the calculation of the center-of-pressure (CoP) velocity (Vcop) and the statistical regularity (wavelet entropy) of the CoP trajectory (WEcop), respectively. Training included 3 sets of 3 repetitions of barbell squats using Smith Machine, ranging from 90 % of one repetition maximum (1RM) to 100 % 1RM with 3 min rest between repetitions and 5 min rest between sets. Vcop and WEcop decreased after training (all time main effects, p <= 0.028) but group time interactions were not significant (all, p >= 0.056). Exploratory analyses revealed that participants in the experimental group showed a significant decrease of Vcop and WEcop in the mediolateral (ML) directions from pre to post [ML Vcop: 15.4 %; Bonferroni-corrected p = 0.048); ML WEcop: 10.5 %; Bonferroni-corrected p = 0.016]. A trend towards a decrease in Vcop and WEcop was also observed in controls, with more prominent gains in the anteroposterior than in the ML direction (Bonferroni-corrected p > 0.2). Overall, findings suggest that acute strength training may improve attentional control of balance along the narrow dimension of the support. Further studies are warranted to examine the specific mechanisms underlying these findings.

【 授权许可】

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