During the last decades students have become a target group for cities like Amsterdam. They are addressed as the talented forces that cities need in order to face increasing global competitiveness, a force which itself is represented as giving cities their dynamic edge.
Wearable inertial sensors (WIS) facilitate the preservation of the athlete-environment relationship by allowing measurement outside the laboratory. WIS systems should be validated for team sports movements before they are used in sports performance and injury prevention research. The aim of the present study was to investigate the concurrent validity of a wearable inertial sensor system in quantifying joint kinematics during team sport movements. Ten recreationally active participants performed change-of-direction (single-leg deceleration and sidestep cut) and jump-landing (single-leg hop, single-leg crossover hop, and double-leg vertical jump) tasks while motion was recorded by nine inertial sensors (Noraxon MyoMotion, Noraxon USA Inc.) and eight motion capture cameras (Vicon Motion Systems Ltd). Validity of lower-extremity joint kinematics was assessed using measures of agreement (cross-correlation: XCORR) and error (root mean square deviation; and amplitude difference). Excellent agreement (XCORR >0.88) was found for sagittal plane kinematics in all joints and tasks. Highly variable agreement was found for frontal and transverse plane kinematics at the hip and ankle. Errors were relatively high in all planes. In conclusion, the WIS system provides valid estimates of sagittal plane joint kinematics in team sport movements. However, researchers should correct for offsets when comparing absolute joint angles between systems.
Purpose: The authors provide a personal insight into how they see the potential of urban culture as a vehicle for creative placemaking. The purpose of this study is to highlight the opportunities for the tourism industry to embrace this global youth culture now that one of its pillars, breakdance, is on the brink of becoming an Olympic discipline in 2024, thus nudging this youth culture from underground to mainstream. Design/methodology/approach: The authors interviewed two Dutch pioneers in the field of urban culture: Tyrone van der Meer, founder of The Notorious IBE (IBE), an international breaking event, and Angelo Martinus, founder of the urban scene in Eindhoven and initiator of EMOVES, an urban culture and sports event. Findings: The authors illustrate the added value of urban culture to creative placemaking by addressing the initiatives of previously mentioned Dutch pioneers. Their urban culture events on Dutch soil, yearly attract thousands of participants and visitors from the urban scene, covering over 40 nationalities, to the South of The Netherlands. Originality/value: This study provides a glimpse into a global youth culture that is primarily invisible to the tourism industry and a foresight in how the tourism industry and other stakeholders (e.g. policy makers, city marketeers, tourism managers and event organisers) can pick up on this evolving trend. The study is meant as a wake-up call.
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