title: How do runners select their shoes? An in-store experience

authors: Fife, Andrew

abstract: We aimed to identify factors that influence running shoe selection and how salespeople and runners experience the in-store selection process. In a cross-sectional design, we surveyed 101 runners (buyers and non-buyers) and 38 salespeople in specialty running stores. Surveys contained questions about demographics, factors influencing shoe choice, sources of footwear advice/education, conscious behaviour, and perceived influence of salespeople on selection. There were no significant differences between buyers and non-buyers regarding how much runners thought about their purchases (i.e., level of consciousness). Salespeople were significantly younger than runners and believed a greater number of factors and sources of advice influenced shoe selection. Runners most frequently identified fit, comfort, and gait analysis or injury prevention as most influential in selecting shoes, in that order. Salespeople believed comfort was the most important for runners. Buyers and non-buyers prioritised advice on running shoes from salespeople, friends, and family, while salespeople primarily got their information from peers. Buyers and non-buyers visiting speciality running stores largely reflect the same population. Salespeople advising runners significantly differed from their target clientele in several regards and overestimated their influence on runners’ selection. We caution runners to carefully consider the advice from salespeople as many employees make recommendations that are not evidence-based and may have limited experience.

text: How do runners select their shoes? An in-store experience We aimed to identify factors that influence running shoe selection and how salespeople and runners experience the in-store selection process. In a cross-sectional design, we surveyed 101 runners (buyers and non-buyers) and 38 salespeople in specialty running stores. Surveys contained questions about demographics, factors influencing shoe choice, sources of footwear advice/education, conscious behaviour, and perceived influence of salespeople on selection. There were no significant differences between buyers and non-buyers regarding how much runners thought about their purchases (i.e., level of consciousness). Salespeople were significantly younger than runners and believed a greater number of factors and sources of advice influenced shoe selection. Runners most frequently identified fit, comfort, and gait analysis or injury prevention as most influential in selecting shoes, in that order. Salespeople believed comfort was the most important for runners. Buyers and non-buyers prioritised advice on running shoes from salespeople, friends, and family, while salespeople primarily got their information from peers. Buyers and non-buyers visiting speciality running stores largely reflect the same population. Salespeople advising runners significantly differed from their target clientele in several regards and overestimated their influence on runners’ selection. We caution runners to carefully consider the advice from salespeople as many employees make recommendations that are not evidence-based and may have limited experience.

year: 2024-06-04

title: Modelling the relative importance of internal and external nutrient loads on water column nutrient concentrations and phytoplankton biomass in a shallow polymictic lake

authors: Burger, David F.

subjects: lake management

abstract: Lake Rotorua is a large (area 79 km²), shallow (mean depth 10.8 m), polymictic lake in central North Island, New Zealand. The lake is eutrophic, with a mean external aerial load of 18.5 mg m⁻² d⁻¹ for total nitrogen and 1.2 mg m⁻² d⁻¹ for total phosphorus. Blooms of cyanobacteria and occasional anoxia of bottom waters occur during summer (December–March). We used a vertically resolved water quality model, DYRESM–CAEDYM, to examine the relative importance of internal and external nutrient inputs on water column nutrient concentrations and phytoplankton biomass, with particular emphasis on cyanobacteria. External nutrient loads associated with nine major inflows to the lake and three additional inflows representing smaller geothermal and coldwater flows and residual flows, were represented as inputs to the model. Other forcing inputs to the model included local meteorological data, discharge from the only outflow, the Ohau Channel, and measured rates of sediment nutrient release obtained from benthic chamber deployments which were used to prescribe ranges of sediment nutrient release that were simulated dynamically within the model. Profiles of water column nutrient concentrations, surface chlorophyll a concentrations and continuous temperature and dissolved oxygen measurements were used to validate the model. Simulated water column temperature and soluble reactive phosphorus (SRP) and ammonium (NH4) concentrations closely matched field measurements, and captured the timing and duration of stratification events as well as subsequent changes in bottom water nutrient concentrations. Surface water concentrations of chlorophyll a were also similar between simulated and observed data. Model simulations indicate that reductions in sediment nutrient fluxes would be more effective in reducing cyanobacterial biomass than similar proportional reductions in catchment fluxes, due to the coincidence of large sediment nutrient release events with high cyanobacterial biomass. This finding indicates that only a significant and prolonged reduction in external loads, which in turn reduces internal loads, will ultimately reduce cyanobacterial biomass in Lake Rotorua.

text: Modelling the relative importance of internal and external nutrient loads on water column nutrient concentrations and phytoplankton biomass in a shallow polymictic lake Lake Rotorua is a large (area 79 km²), shallow (mean depth 10.8 m), polymictic lake in central North Island, New Zealand. The lake is eutrophic, with a mean external aerial load of 18.5 mg m⁻² d⁻¹ for total nitrogen and 1.2 mg m⁻² d⁻¹ for total phosphorus. Blooms of cyanobacteria and occasional anoxia of bottom waters occur during summer (December–March). We used a vertically resolved water quality model, DYRESM–CAEDYM, to examine the relative importance of internal and external nutrient inputs on water column nutrient concentrations and phytoplankton biomass, with particular emphasis on cyanobacteria. External nutrient loads associated with nine major inflows to the lake and three additional inflows representing smaller geothermal and coldwater flows and residual flows, were represented as inputs to the model. Other forcing inputs to the model included local meteorological data, discharge from the only outflow, the Ohau Channel, and measured rates of sediment nutrient release obtained from benthic chamber deployments which were used to prescribe ranges of sediment nutrient release that were simulated dynamically within the model. Profiles of water column nutrient concentrations, surface chlorophyll a concentrations and continuous temperature and dissolved oxygen measurements were used to validate the model. Simulated water column temperature and soluble reactive phosphorus (SRP) and ammonium (NH4) concentrations closely matched field measurements, and captured the timing and duration of stratification events as well as subsequent changes in bottom water nutrient concentrations. Surface water concentrations of chlorophyll a were also similar between simulated and observed data. Model simulations indicate that reductions in sediment nutrient fluxes would be more effective in reducing cyanobacterial biomass than similar proportional reductions in catchment fluxes, due to the coincidence of large sediment nutrient release events with high cyanobacterial biomass. This finding indicates that only a significant and prolonged reduction in external loads, which in turn reduces internal loads, will ultimately reduce cyanobacterial biomass in Lake Rotorua.

year: 2008

title: Claiming space and restoring harmony within hui whakatika

authors: Berryman, Mere

subjects: Maori

abstract: The time has come for indigenous, specifically Māori psychologies, to move from the margins, and claim legitimate space within the discipline of psychology (MPRU, 2007). Phinney and Rotheram (1987) argue that there are ethnicallylinked ways of thinking, feeling and acting that are acquired through socialisation. The message implicit in this statement has profound implications for a discipline that seeks to understand and respond to the intricacies of human behaviour. Although the epistemological paradigms emerging from the experiences of indigenous minorities such as Māori may offer a challenge to mainstream knowledge and perspectives (Gordon, 1997), it is clear that disregarding such alternatives may well leave the discipline of psychology impoverished. On the other hand, paying attention to alternative paradigms may well serve to enrich this discipline. This paper presents two successful Hui Whakatika that were led by Māori in mainstream settings. Particular dimensions of, and congruencies between both are explored. The first highlights the vital role of a kaumatua in facilitating and guiding the entire process; the second focuses on the role and experiences of a kaitakawaenga as he works collaboratively with whānau members to find resolution and restore harmony.

text: Claiming space and restoring harmony within hui whakatika The time has come for indigenous, specifically Māori psychologies, to move from the margins, and claim legitimate space within the discipline of psychology (MPRU, 2007). Phinney and Rotheram (1987) argue that there are ethnicallylinked ways of thinking, feeling and acting that are acquired through socialisation. The message implicit in this statement has profound implications for a discipline that seeks to understand and respond to the intricacies of human behaviour. Although the epistemological paradigms emerging from the experiences of indigenous minorities such as Māori may offer a challenge to mainstream knowledge and perspectives (Gordon, 1997), it is clear that disregarding such alternatives may well leave the discipline of psychology impoverished. On the other hand, paying attention to alternative paradigms may well serve to enrich this discipline. This paper presents two successful Hui Whakatika that were led by Māori in mainstream settings. Particular dimensions of, and congruencies between both are explored. The first highlights the vital role of a kaumatua in facilitating and guiding the entire process; the second focuses on the role and experiences of a kaitakawaenga as he works collaboratively with whānau members to find resolution and restore harmony.

year: 2008