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Adductor pollicis fatigue is comparable in older men and women.
2003 NOV 6 - (NewsRx.com & NewsRx.net) -- Adductor pollicis fatigue is comparable in older men and women.
"Sex differences in fatigue resistance of the adductor pollicis (AP) muscle were studied in 24 older adults who were divided into three groups: 12 older men (69.8[+ or -]4.60 years), 6 older women not on hormone replacement therapy (HRT) (70.2[+ or -]4.02 years), and 6 older women on HRT (68.7[+ or -]6.47 years)," described rseachers in Canada.
"Fatigue in the AP muscle was induced using an intermittent (5 second (s) contraction, 5 s rest) submaximal voluntary contraction (50% of maximal voluntary contraction (MVC)) protocol, which was continued until exhaustion (i.e., when subjects could either no longer maintain a 5-s contraction at 50% MVC or when the MVC was deemed to be lower than the target force)," said A. Cheng and colleagues, McMaster University, Department of Kinesiology.
"There was no effect of HRT on MVC or time to fatigue (TTF); therefore, the older women were pooled as one subject group. At baseline, men were stronger than women for MVC (75.9[+ or -]18.8 N in men vs. 56.8[+ or -]10.0 N in women; p
"There was no difference in TTF between men and women (14.77[+ or -]7.06 min in men vs. 11.53[+ or -]4.91 min in women; p>0.20), nor was there a significant relationship ...
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Source: HighBeam Research, Adductor pollicis fatigue is comparable in older men and women.