Ageing and obesity indices influences the tactile acuity of the low back regions: A cross-sectional study

Falling, Carrie; Mani, Ramakrishnan

doi:10.1016/j.math.2016.02.004

Cited by 17 publications

(19 citation statements)

References 41 publications

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“…For each participant, the tactile acuity threshold (i.e., the minimal distance at which two tactile stimuli can be perceived separately; Cornsweet, 1962; Ehrenstein & Ehrenstein, 1999) was computed as the average of the distance between the calliper tips across the last six reversals (Falling & Mani, 2016). The independent samples t -test performed on normally distributed data (Shapiro–Wilk test: healthy weight p = .77; obesity p = .24) revealed that the tactile acuity threshold was not significantly different, t (32) = –0.98, two-tailed p = .33, d = 0.34, 95% CI = [–0.34, 1.02], between healthy weight participants, M ( SD ) = 14.99 mm (5.07), and participants with obesity, M ( SD ) = 16.82 mm (5.62) (Figure 2, right panel).…”

Section: Resultsmentioning

confidence: 99%

“…Lately, an association between tactile acuity per se and biases in more explicit body size estimation tasks has been reported (Linkenauger et al, 2015; Proske & Gandevia, 2012; Sadibolova et al, 2019), including a task (Peviani et al, 2019) that is supposed to investigate a body representation qualitatively similar but less distorted than the body model (Longo & Haggard, 2012b). Thus, considering the lower tactile acuity threshold reported in obesity than in healthy weight participants (Boles & Givens, 2011; Bussolaro et al, 2012; Falling & Mani, 2016), we probed the possible interplay between tactile acuity and body model distortions. Here, we reported no difference in tactile acuity between the two groups, neither we found a significant relationship with the BMI, in contrast with previous observations of a higher tactile acuity threshold in obesity (Boles & Givens, 2011; Bussolaro et al, 2012; Falling & Mani, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Thus, considering the lower tactile acuity threshold reported in obesity than in healthy weight participants (Boles & Givens, 2011; Bussolaro et al, 2012; Falling & Mani, 2016), we probed the possible interplay between tactile acuity and body model distortions. Here, we reported no difference in tactile acuity between the two groups, neither we found a significant relationship with the BMI, in contrast with previous observations of a higher tactile acuity threshold in obesity (Boles & Givens, 2011; Bussolaro et al, 2012; Falling & Mani, 2016). However, tactile acuity seems to be specifically influenced by the body fat ratio (Boles & Givens, 2011).…”

Section: Discussionmentioning

confidence: 99%

“…For all participants, the starting distance between the two tips of the calliper was set at 30 mm (Mancini et al, 2014). According to Falling and Mani (2016), the distance between the tips decreased of one step in each successive trial, as long as the participant perceived two points. Conversely, when the participant perceived only one stimulus, or she or he was unsure, the distance between the tips increased of two steps.…”

Section: Landmark Localisation Task An Adapted Version Ofmentioning

confidence: 99%

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The self-perceived body size in obesity: Evidence from the implicit representation of the hand

Tagini

Scarpina

Scacchi

et al. 2021

Quarterly Journal of Experimental Psychology

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To locate our body in the space, we rely on an implicit representation of body size and shape: the body model. Evidence about the implicit representation of bodily dimensions in obesity is rare. Nevertheless, it seems to suggest that such representation is not altered in obesity compared to healthy weight individuals. To probe further this hypothesis, we investigated the implicit representation of hand dimensions with a landmark localisation task, comparing individuals with obesity and healthy weight individuals. Furthermore, as body model distortions may be related to tactile acuity, the tactile acuity threshold was measured using a two-point discrimination task. In accordance with the previous evidence, we observed that healthy weight participants showed a significant underestimation of finger length and overestimation of hand width. Interestingly, comparable body model distortions were shown also in participants with obesity. No differences in tactile acuity emerged between the two groups; also, when considering the whole sample, as tactile acuity decreases hand width overestimation increases. Thus, obesity seems to have no effect on the characteristics of the body model relative to the hand. Accordingly, the physiological mechanisms supporting the development of the implicit representation of hand dimensions in the healthy weight population may be preserved in obesity.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Landmark Localisation Task An Adapted Version Ofmentioning

confidence: 99%

See 2 more Smart Citations

The self-perceived body size in obesity: Evidence from the implicit representation of the hand

Tagini

Scarpina

Scacchi

et al. 2021

Quarterly Journal of Experimental Psychology

View full text Add to dashboard Cite

show abstract

“…Following this, linear mixed regression models were fitted to the data to evaluate the effect of the independent variables on disability and pain over time. Age was included as a potential confounding variable based on its association with the TPDT (29). Timepoints (T2 and T3) were entered as fixed effects and subjects as random effects (intercepts).…”

Section: Discussionmentioning

confidence: 99%

Prediction and Trend of Tactile Acuity, Pain and Disability in Acute LBP: A Six-Month Prospective Cohort Study

Morf

Pfeiffer

Hotz‐Boendermaker

et al. 2021

Preprint

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Background: Chronic back pain is known to be associated with altered tactile acuity. Tactile acuity is measured using the Two-Point Discrimination (TPD) test in both clinical and research settings. In subjects with chronic low back pain, the TPD threshold (TPDT) is increased and is associated with persistent pain. It remains unknown, however, whether TPDT is also altered in cases of acute pain, or whether it could be used as a predictor of future pain and disability at an early stage of LBP.The main objective of this study was to investigate the predictive value of baseline TPDT for pain and disability at three and six months after the onset of acute LBP. The TPDT in acute low back pain (LBP) and the development of TPDT over six months has also been assessed. Methods: LBP participants (n=124) with acute LBP (<4 weeks) were included. Subjects were examined within 4 weeks of pain onset and followed-up after 3 months and 6 months of pain onset. Horizontal and vertical TPDTs of the lower back were collected. Linear mixed models were subsequently used to evaluate the association of TPDT with pain and disability over time.Results: The vertical TPDT showed a mean (SD) of 4.9 cm (1.6) and the horizontal TPDT a mean (SD) of 6.0 cm (1.5) at baseline. The vertical TPDT altered from baseline up to 6 months from 4.9 cm to 4.6 cm and the horizontal TPDT from 6.0 cm to 5.4 cm. The association between the TPDT and the Oswestry Disability Index (ODI) after 6 months was moderate. Linear mixed models revealed no association between TPDT, pain and disability over the progression of LBP. Conclusion: TPDTs appear to be raised in subjects with acute LBP. However, our study revealed no predictive capability of the TPDT for disability and pain. No comparisons are possible in the absence of similar studies, indicating the need for further research is in this area.

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Body size estimation in obesity: a systematic review and meta-analysis

2021

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Ageing and obesity indices influences the tactile acuity of the low back regions: A cross-sectional study

Cited by 17 publications

References 41 publications

The self-perceived body size in obesity: Evidence from the implicit representation of the hand

The self-perceived body size in obesity: Evidence from the implicit representation of the hand

Prediction and Trend of Tactile Acuity, Pain and Disability in Acute LBP: A Six-Month Prospective Cohort Study

Body size estimation in obesity: a systematic review and meta-analysis

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