Influence of pre-exercise glucose ingestion of two concentrations on paraplegic athletes

In this study, we assessed the influence that pre-exercise glucose ingestion of two concentrations has on the physiological responses of paraplegic athletes. Eight men with paraplegia ingested a drink containing 4% (low) or 11% (high) carbohydrate in a randomized double-blind crossover design, 20 min before exercise. The participants performed wheelchair exercise at 65% of peak oxygen uptake for 1 h followed by a 20 min performance test. During both trials, the physiological responses were similar and indicated steady-state exercise. At the onset of exercise, blood glucose concentrations in both trials increased after carbohydrate ingestion (P < 0.05) before returning to resting values after 20 min of exercise and there were no differences between trials. Free fatty acid concentrations increased from rest to 1 h of exercise in both trials, with a greater increase during the low carbohydrate trial that led to a difference in free fatty acids between trials at the end of the 1 h tests (P < 0.05). There was a tendency for the performance distances and power outputs achieved during the high carbohydrate trial to be greater than those achieved during the low carbohydrate trial (P= 0.08). In conclusion, when paraplegic athletes ingested low and high carbohydrate drinks before exercise, the decline in blood glucose concentrations was similar. The tendency for higher blood glucose concentrations, respiratory exchange ratios and power outputs and lower free fatty acid concentrations (P < 0.05) during the high carbohydrate trial suggests that a higher concentration of carbohydrate in a sports drink might be a better choice for paraplegic athletes.     

Video‐mediated Judgements of Personal Characteristics Based Upon Non‐verbal Cues

The process of forming initial judgements to do with a range of personal attributes such as age, marital status, personality, etc. plays an important part in making contact with other people and forming relationships with them (Kleinke, 1986). It has also been the subject of extensive psychological enquiry of late (Cook, 1984). The twofold objectives of the present investigation were, firstly, to establish the degree of correspondence between observers’ judgements based upon video presentations of subjects, and subjects’ actual age, marital status, religion, socio‐economic status and personality; and, secondly, to determine the types of nonverbal cue upon which such impressions were founded. Results revealed that only in the case of age did the correlation between observered and actual values of the variable reach significance. The nonverbal cues implicated seemed to be mostly to do with subjects’ appearance, hair and face. More broadly, appearance, as a general category of observation, was extensively represented throughout the study, irrespective of the accuracy of the specific judgement arrived at. Results are discussed within the context of existing research findings. Limitations of the study are identified and suggestions made as to ways in which this work may be extended, particularly in respect of the importance of video and television replays as an observational medium.