Impact of the Slingshot on Bench Press Performance and Shoulder Girdle Muscle Activation

The Sling Shot is an instrument used during the bench press and is thought to improve performance, reduce upper limb pain, and promote proper technique. The purpose of this study was to determine the impact of the Sling Shot on upper body muscle activity and one-repetition maximum (1RM) bench press performance. The hypothesis stated that if the Sling Shot decreases shoulder torque, then 1RM bench press performance should increase and upper body muscle activity should decrease while using the Sling Shot. Eight college-aged males participated in this study. Each participant’s 1RM was tested with and without the Sling Shot. Results are currently being analyzed for statistical significance. However, the bench press 1RM did increase an average of 29.38 ± 8.21 lbs while wearing the Sling Shot. Muscle activation of the pectoralis major, anterior deltoid, and triceps brachii was measured using surface electromyography (sEMG) on each participant during the bench press under three conditions; 80% of 1RM without the Sling Shot, 80% of 1RM wearing the Sling Shot, and 80% of Sling Shot 1RM wearing the Sling Shot. A 2-way ANOVA with replication is currently being conducted to assess the impact of the Sling Shot on sEMG results

Prediction of VO\u3csub\u3e2\u3c/sub\u3e Peak Using Sub-Maximum Bench Step Test in Children

The purpose of this study was to develop a valid prediction of maximal oxygen uptake from data collected during a submaximum bench stepping test among children ages 8-12 years. Twentyseven active subjects (16 male and 11 female), weight 36.1 kg, height 144.4 cm and VO2 47.4 ± 7.9 ml/kg/min participated. Subjects completed a maximal oxygen consumption test with analysis of expired air and a submaximal bench stepping test. A formula to predict VO2max was developed from height, resting heart rate and heart rate response during the submaximum bench stepping test. This formula accounted for 71% of the variability in maximal oxygen consumption and is the first step in verifying the validity of the submaximum bench stepping test to predict VO2max. VO2max = -2.354 + (Height in cm * 0.065) + (Resting Heart Rate * 0.008) + (Step Test Average Heart Rate as a Percentage of Resting Heart Rate * -0.870

Exploratory Analysis of Benchmark Experiments -- An Interactive Approach

The analysis of benchmark experiments consists in a large part of exploratory methods, especially visualizations. In Eugster et al. [2008] we presented a comprehensive toolbox including the bench plot. This plot visualizes the behavior of the algorithms on the individual drawn learning and test samples according to specific performance measures. In this paper we show an interactive version of the bench plot can easily uncover details and relations unseen with the static version

Fatigue test bench manufacturing by reusing a parallel lathe

Fatigue life of machined parts strongly depends on their surface condition. The rotating bar bending fatigue testing method is widely used to obtain the fatigue behavior of metallic materials due to its simplicity. In this work, the methodology for the design, manufacturing and setup of a fatigue test bench is exposed. The main novelty lies on the reuse of several elements from an old parallel lathe, currently out of order, and their use to manufacture some parts for the test bench. In this way, a double objective is achieved: high quality elements are recycled and the machine manufacturing cost is reduced.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech