Using recovery modalities between training sessions in elite athletes: does it help?

Achieving an appropriate balance between training and competition stresses and recovery is important in maximising the performance of athletes. A wide range of recovery modalities are now used as integral parts of the training programmes of elite athletes to help attain this balance. This review examined the evidence available as to the efficacy of these recovery modalities in enhancing between-training session recovery in elite athletes. Recovery modalities have largely been investigated with regard to their ability to enhance the rate of blood lactate removal following high-intensity exercise or to reduce the severity and duration of exercise-induced muscle injury and delayed onset muscle soreness (DOMS). Neither of these reflects the circumstances of between-training session recovery in elite athletes. After high-intensity exercise, rest alone will return blood lactate to baseline levels well within the normal time period between the training sessions of athletes. The majority of studies examining exercise-induced muscle injury and DOMS have used untrained subjects undertaking large amounts of unfamiliar eccentric exercise. This model is unlikely to closely reflect the circumstances of elite athletes. Even without considering the above limitations, there is no substantial scientific evidence to support the use of the recovery modalities reviewed to enhance the between-training session recovery of elite athletes. Modalities reviewed were massage, active recovery, cryotherapy, contrast temperature water immersion therapy, hyperbaric oxygen therapy, nonsteroidal anti-inflammatory drugs, compression garments, stretching, electromyostimulation and combination modalities. Experimental models designed to reflect the circumstances of elite athletes are needed to further investigate the efficacy of various recovery modalities for elite athletes. Other potentially important factors associated with recovery, such as the rate of post-exercise glycogen synthesis and the role of inflammation in the recovery and adaptation process, also need to be considered in this future assessment.

Cross-artform creative practice as still-life recovery: Chinese-Western materialisms of time, writing and death

As argued by Norman Bryson, the still-life genre is sorely neglected by theorists and critics, largely because its concern with ‘low-plane reality’ (everyday items and acts) has obscured its genuine relevance to material thinking. By reappraising rather than abandoning the genre’s traditional themes of death and time—using a cross-cultural, Chinese-Western approach—it is possible to re-energise materialisms of time, writing and death within still life. Such a move depends above all on a re-evaluation of still life as ‘Vanitas’—the term which to date has unified, and more to the point limited, traditional still-life understandings of death and time. This article tracks a more explosive and creative materialism of still life simultaneously through the specifically Chinese approach to death (which includes the ‘Yin Yang’ 阴阳 as a sort of author of time) and via Gilles Deleuze’s cinematic philosophy of the time-image; what connects these is the very Deleuzean notion of time that subtends Chinese engagements with death. In this way, the still-life genre may be recovered from its current critical and theoretical malaise. Reconnecting with practice is a crucial aspect of this recovery, and so in its early stages this article analyses an example of still-life, creative non-fiction (authored by Cher Coad), and it concludes by establishing the value of this potentially ‘new chapter of the “still life” genre’ (in Matilde Marcolli’s terms) for the cross-artform analysis of the short story ‘Nhill’ (authored by Patrick West). Analysis, though, is only half the picture: a fully recovered still-life genre would see theory and practice endlessly circulating through each other, spurring on practice and impelling theory. Coad’s and West’s literary examples are introduced in the hope that they might trigger fresh theoretical and practice-based, still-life discoveries in prose and also in poetry.

Hybrid approach to ensure data confidentiality and tampered data recovery for RFID tag

Radio Frequency Identification (RFID) is an emerging wireless object identification technology with many potential applications such as supply chain management, personnel tracking and healthcare. However, security vulnerabilities of the RFID system have been a serious concern for its wide adoption in many applications. Although there are lots of work to provide privacy and anonymity, little focus has been given to ensure confidentiality and integrity of RFID tag data. To this end, we propose a lightweight hybrid approach based on stenographic and watermarking to ensure data confidentiality, linkability resistance and integrity on the RFID tags data. The proposed technique is capable of tampered data recovering and restoring for RFID tag. It has been validated and tested on EPC class 1 gen2 tags.