Effects of assistive insole feedback training on immediate and multi-day partial weight bearing retention during walking: A pilot study

EFFECT OF WEIGHT TRAINING ON THE TRAINING OF BADMINTON ATHLETES

ABSTRACT Introduction: The proportion of tactical activities athletes perform through explosive strength is relatively high in the authentic game of badminton. And weight training has the effect of improving the explosive power of players. Objective: Study the effects of weight training incorporated with explosive strength training on badminton players. Methods: The article adopts a controlled experiment, in which the control group practices standardized explosive strength training in training activities. In contrast, the experimental group has the addition of weightlifting exercises using sandbags in its protocol. The experiment was performed completely according to the dedicated badminton teaching plan for freshmen, lasting eight weeks. Results: Before the intervention, the wrist joint speed in the experimental group was 11.76 km/h, and the final speed was 162.30 km/h. After the experiment, the joint velocity increased to 12.35 km/h, and the final velocity to 177.50 km/h. Conclusion: The addition of 10% weight training showed statistical benefits to explosive strength training, and its implementation in usual protocols is indicated to improve the indicators of explosive strength in athletes. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

Validity and Reliability of the Insole3 Instrumented Shoe Insole for Ground Reaction Force Measurement during Walking and Running

Pressure-detecting insoles such as the Insole3 have potential as a portable alternative for assessing vertical ground reaction force (vGRF) outside of specialized laboratories. This study evaluated whether the Insole3 is a valid and reliable alternative to force plates for measuring vGRF. Eleven healthy participants walked overground at slow and moderately paced speeds and ran at a moderate pace while collecting vGRF simultaneously from a force plate (3000 Hz) and Insole3 (100 Hz). Intraclass correlation coefficients (ICC) demonstrated excellent vGRF agreement between systems during both walking speeds for Peak 1, Peak 2, the valley between peaks, and the vGRF impulse (ICC > 0.941). There was excellent agreement during running for the single vGRF peak (ICC = 0.942) and impulse (ICC = 0.940). The insoles slightly underestimated vGRF peaks (−3.7% to 0.9% bias) and valleys (−2.2% to −1.8% bias), and slightly overestimated impulses (4.2% to 5.6% bias). Reliability between visits for all three activities was excellent (ICC > 0.970). The Insole3 is a valid and reliable alternative to traditional force plates for assessing vGRF during walking and running in healthy adults. The excellent ICC values during slow walking suggests that the Insole3 may be particularly suitable for older adults in clinical and home settings.