title: Is it time to turn our attention toward central mechanisms for post-exertional recovery strategies and performance?

authors: Rattray, Ben

subjects: Science & Technology

abstract: • Central fatigue is accepted as a contributor to overall athletic performance, yet little research directly investigates post-exercise recovery strategies targeting the brain
• Current post-exercise recovery strategies likely impact on the brain through a range of mechanisms, but improvements to these strategies is needed 
• Research is required to optimize post-exercise recovery with a focus on the brain 
Post-exercise recovery has largely focused on peripheral mechanisms of fatigue, but there is growing acceptance that fatigue is also contributed to through central mechanisms which demands that attention should be paid to optimizing recovery of the brain. In this narrative review we assemble evidence for the role that many currently utilized recovery strategies may have on the brain, as well as potential mechanisms for their action. The review provides discussion of how common nutritional strategies as well as physical modalities and methods to reduce mental fatigue are likely to interact with the brain, and offer an opportunity for subsequent improved performance. We aim to highlight the fact that many recovery strategies have been designed with the periphery in mind, and that refinement of current methods are likely to provide improvements in minimizing brain fatigue. Whilst we offer a number of recommendations, it is evident that there are many opportunities for improving the research, and practical guidelines in this area.

text: Is it time to turn our attention toward central mechanisms for post-exertional recovery strategies and performance? • Central fatigue is accepted as a contributor to overall athletic performance, yet little research directly investigates post-exercise recovery strategies targeting the brain
• Current post-exercise recovery strategies likely impact on the brain through a range of mechanisms, but improvements to these strategies is needed 
• Research is required to optimize post-exercise recovery with a focus on the brain 
Post-exercise recovery has largely focused on peripheral mechanisms of fatigue, but there is growing acceptance that fatigue is also contributed to through central mechanisms which demands that attention should be paid to optimizing recovery of the brain. In this narrative review we assemble evidence for the role that many currently utilized recovery strategies may have on the brain, as well as potential mechanisms for their action. The review provides discussion of how common nutritional strategies as well as physical modalities and methods to reduce mental fatigue are likely to interact with the brain, and offer an opportunity for subsequent improved performance. We aim to highlight the fact that many recovery strategies have been designed with the periphery in mind, and that refinement of current methods are likely to provide improvements in minimizing brain fatigue. Whilst we offer a number of recommendations, it is evident that there are many opportunities for improving the research, and practical guidelines in this area.

year: 2015-03-17

title: Consumption of submerged aquatic macrophytes by rudd (scardinius erythrophthalmus L.) in New Zealand

authors: Lake, Michael D.

subjects: aquatic macrophytes

abstract: In experiments in New Zealand, rudd (Scardinius erythrophthalmus L.) of 108–277mm fork length (FL) ate a wide range of native and introduced submerged aquatic macrophytes in captivity and in the field. Rudd consumed the native charophytes Chara globularis Thuill., Chara fibrosa Ag. ex Bruz., and Nitella spp., the native macrophytes Potamogeton ochreatus Raoul. and Myriophyllum propinquum A. Cunn., and the introduced macrophytes Elodea canadensis Michx., Egeria densa Planch., Lagarosiphon major L., and Ceratophyllum demersum L. Rudd consistently consumed the Nitella spp. and Potamogeton ochreatus before Ceratophyllum demersum. From the results of experiments in tanks and in the field, we found the order of highest to lowest palatability was: Nitella spp. > Potamogeton ochreatus > Elodea canadensis> Chara globularis = Chara fibrosa> Egeria densa = Lagarosiphon major > Myriophyllum propinquum > Ceratophyllum demersum. The order of consumption was subject to some variation with season, especially for Egeria densa, Lagarosiphon major, and Myriophyllum propinquum. Rudd
consumed up to 20% of their body weight per day of Egeria densa in spring, and 22% of their body weight per day of Nitella spp. in summer. Consumption rates were considerably lower in winter than in summer. The results of our field trial suggested that the order of consumption also applies in the field and that rudd are having a profound impact on vulnerable native aquatic plant communities in New Zealand. Nitella spp. and Potamogeton ochreatus are likely to be selectively eaten, and herbivory by rudd might prevent the re-establishment of these species in
restoration efforts.

text: Consumption of submerged aquatic macrophytes by rudd (scardinius erythrophthalmus L.) in New Zealand In experiments in New Zealand, rudd (Scardinius erythrophthalmus L.) of 108–277mm fork length (FL) ate a wide range of native and introduced submerged aquatic macrophytes in captivity and in the field. Rudd consumed the native charophytes Chara globularis Thuill., Chara fibrosa Ag. ex Bruz., and Nitella spp., the native macrophytes Potamogeton ochreatus Raoul. and Myriophyllum propinquum A. Cunn., and the introduced macrophytes Elodea canadensis Michx., Egeria densa Planch., Lagarosiphon major L., and Ceratophyllum demersum L. Rudd consistently consumed the Nitella spp. and Potamogeton ochreatus before Ceratophyllum demersum. From the results of experiments in tanks and in the field, we found the order of highest to lowest palatability was: Nitella spp. > Potamogeton ochreatus > Elodea canadensis> Chara globularis = Chara fibrosa> Egeria densa = Lagarosiphon major > Myriophyllum propinquum > Ceratophyllum demersum. The order of consumption was subject to some variation with season, especially for Egeria densa, Lagarosiphon major, and Myriophyllum propinquum. Rudd
consumed up to 20% of their body weight per day of Egeria densa in spring, and 22% of their body weight per day of Nitella spp. in summer. Consumption rates were considerably lower in winter than in summer. The results of our field trial suggested that the order of consumption also applies in the field and that rudd are having a profound impact on vulnerable native aquatic plant communities in New Zealand. Nitella spp. and Potamogeton ochreatus are likely to be selectively eaten, and herbivory by rudd might prevent the re-establishment of these species in
restoration efforts.

year: 2002

title: Are You Listening? The Voice of Waitaha, A Forgotten People.

authors: Reese, Alistair William

subjects: maori

abstract: This thesis is a study of Waitaha, a Bay of Plenty iwi that has been marginalized through
the loss of most of its land, much of its language, tikanga, and mana. The purpose of the
work is to communicate, through the 'voice' and the history of the people, a chronicle, of
their alienation to a Pākehā audience that remains in large part ignorant and distant from
their plight.
The thesis is motivated by an academic responsibility to the Treaty of Waitangi and the
lack of understanding to the present needs of Māori as evidenced for example, by the
support for the January 2004 Orewa speech, by the leader of the National Party, Don
Brash. It is predicated upon the understanding that this response, which minimalises the
impact of colonization upon Māori, is constructed by many, through a convenience of
distance. It is motivated also on the understanding that most Pākehā who now inhabit the rohe of Waitaha, are completely ignorant of the identity of tangata whenua. It is hoped
that the presentation of the Waitaha story, will provoke a greater empathy from Pākehā,
and thereby facilitate an environment, whereby grievances can be addressed in an
environment of greater understanding.
The thesis is a qualitative based research exercise, carried out in consultation with
kaumātua and other Waitaha members, and attempts to acknowledge and integrate current kaupapa Māori epistemologies with traditional Western academic methodology.
The study uses interviews, Waitangi Tribunal evidence, and other historical references to
construct a narrative that conveys something of the 'voice' of Waitaha. Specifically, it
outlines a chronology of Waitaha settlement, followed by a description of their encounter
with Pākehā, the consequent alienation of the majority of their lands by the Crown, and
concludes, with a glimpse into the current circumstance of Manoeka, the papakainga of
Waitaha.

text: Are You Listening? The Voice of Waitaha, A Forgotten People. This thesis is a study of Waitaha, a Bay of Plenty iwi that has been marginalized through
the loss of most of its land, much of its language, tikanga, and mana. The purpose of the
work is to communicate, through the 'voice' and the history of the people, a chronicle, of
their alienation to a Pākehā audience that remains in large part ignorant and distant from
their plight.
The thesis is motivated by an academic responsibility to the Treaty of Waitangi and the
lack of understanding to the present needs of Māori as evidenced for example, by the
support for the January 2004 Orewa speech, by the leader of the National Party, Don
Brash. It is predicated upon the understanding that this response, which minimalises the
impact of colonization upon Māori, is constructed by many, through a convenience of
distance. It is motivated also on the understanding that most Pākehā who now inhabit the rohe of Waitaha, are completely ignorant of the identity of tangata whenua. It is hoped
that the presentation of the Waitaha story, will provoke a greater empathy from Pākehā,
and thereby facilitate an environment, whereby grievances can be addressed in an
environment of greater understanding.
The thesis is a qualitative based research exercise, carried out in consultation with
kaumātua and other Waitaha members, and attempts to acknowledge and integrate current kaupapa Māori epistemologies with traditional Western academic methodology.
The study uses interviews, Waitangi Tribunal evidence, and other historical references to
construct a narrative that conveys something of the 'voice' of Waitaha. Specifically, it
outlines a chronology of Waitaha settlement, followed by a description of their encounter
with Pākehā, the consequent alienation of the majority of their lands by the Crown, and
concludes, with a glimpse into the current circumstance of Manoeka, the papakainga of
Waitaha.

year: 2006