Within the U.S., there is a significant shift away from broadband usage towards Smartphones as the primary Internet entry point for consumers. Static stretching for 20 s restored the number of key hits for 10 s after stretching to that before the load application and suppressed the increase in subjective fatigue.ĭemand for mobile devices continues to experience worldwide growth.
Qwerty keyboard typing fingers trial#
After stretching, the number of key hits in the first 10 s of Trial 4 was similar to that observed in Trial 1, and there was no increase in subjective fatigue.
Over the first three trials, the number of key hits in the first 10 s gradually decreased, while the feeling of subjective fatigue gradually increased. Static stretching for 20 s preceded Trial 4. Trials 1, 2, and 3 were conducted in succession, with an inter-trial interval of 60 s to ensure a loaded state. Subjective fatigue of the forearm was assessed using a visual analog scale (VAS) before the experiment and after each trial. The participants comprised of 15 healthy males who were instructed to hit a particular key on a computer keyboard using the left ring finger to achieve the maximum number of hits possible over a period of 30 s. To explore the effects of static stretching for 20 s on key hits and subjective fatigue in an eSports-like setting. The pilot study indicated that the tapping rate does not change significantly after 30-s duration for a 2-min tapping. The tapping duration of 1 min per finger was determined based on the results of the pilot study performed prior to the actual study. The participant was seated in neutral sitting posture with keyboard at about elbow height while the thumb and bottom part of palm were supported and forearm unsupported. Immedi- ately after 1 min tapping for every finger, the participant was asked for his or her subjective rat- ing about the fatigue in the associated finger accord- ing to Borg's 10-point scale of ratings of perceived exertion (Borg, 1998). For instance, for left little finger, the participant typed on key A (on standard QWERTY layout) repetitively with his or her maximum voluntary tempo for 1 min. For each of the tapping tasks, the participant, using the corresponding finger, tapped the key in the standard position on the home row of a conventional keyboard for touch typing ( Figure 1). experimental task consisted of 1-min max- imum volitional tapping with each of eight fingers (excluding thumbs).
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