Accuracy of “S Health” pedometer application during walking and stair climbing

Abstract

Background: The S Health application provides an estimate of the amount of physical activity by measuring the number of steps during activities. The purpose was to assess the accuracy of step-counting with different smartphones using the S Health step counting application at long and short walking distances, and stair climbing. Material and methods: 26 participants (aged 28.85 ± 4.85 years) conducted three tests: 20-step test, 60-step stair test, and 6-minute walk test. Three smartphones models of the latest generation and two models of an earlier one were assessed. The StepWatch pedometer was used as a criterion. Results: Only one phone of the latest generation produced the most consistent and accurate results as compared to the pedometer in the 60-step stair test and 6-minute walk test (r=0.840), while the correlation of the other four smartphones was weak, from r=0.257 to r=0.482. Generally, the accuracy increased with the increasing amount of steps in all devices and the mean absolute percentage error decreased. Errors ranged between 5.8 and 56.9% for the 20-step test, 1.9-22.4% for the 60-step stair test, and 1.1-17.8% for the 6-minute walk test. Conclusion: The results suggest that accuracy of smart-phones increase with increased number of steps and correspond to newer models

Acute Effects of Post‑Activation Performance Enhancement of 5RM Weighted Pull‑Ups and One Arm Pull‑Ups on Specific Upper Body Climbing Performance

“…The shift in emphasis of the climbers' physical preparation towards developing larger forces in a shorter time has prompted athletes and coaches to search for new means and methods of training, previously rarely used in this community. Among the various forms of power development that may prove helpful in sport climbers’ conditioning there is complex training, which involves the simultaneous application of different training measures in the same training unit or microcycle ( Verkhoshansky and Siff, 1999 ; Šinkovec and Rugelj 2020 ). Within a single training session, this differentiation mainly refers to selecting biomechanically similar exercises, used in the following sequence: resistance exercise followed by a plyometric, a ballistic, or a speed exercise.…”