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Energetics of the intrinsic foot muscles in plantar fasciitis

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Phosphorus magnetic resonance spectroscopy (P MRS) has shown that the ratio of inorganic phosphate to phosphocreatine ([Pi]/[PCr]) within a muscle increases proportionately with muscle work at low to moderate levels... A 4-Tesla MRS system (Bruker, Germany) was used to obtain concentrations of [PCr] and [Pi] before (PRE) and after (POST) walking... Pi and PCr peaks were integrated and [Pi]/[PCr] was calculated... Walking caused a depletion of [PCr] and an accumulation of [Pi] (Figure 1) which resulted in an increased [Pi]/[PCr] with walking (Table 1)... The increases in [Pi]/[PCr] from PRE to POST were similar in PF and H... In this novel approach to the study of intrinsic foot muscles, we used MRS to measure metabolic activity non-invasively and in vivo... The data showed that walking caused an increased use of ATP in the intrinsic foot muscles, indicating that these muscles were activated to produce force along the plantar aspect of the foot... Although increases in [Pi]/[PCr] of PF and H were similar, more information is required to conclude that both feet performed equal force output... Subsequent studies will examine whether there is PF and H asymmetry in forefoot-rearfoot kinematics, muscle size and mitochondrial function.

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Exemplar PRE and POST spectra.
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Figure 1: Exemplar PRE and POST spectra.

Mentions: Walking caused a depletion of [PCr] and an accumulation of [Pi] (Figure 1) which resulted in an increased [Pi]/[PCr] with walking (Table 1). The increases in [Pi]/[PCr] from PRE to POST were similar in PF and H.


Energetics of the intrinsic foot muscles in plantar fasciitis
Exemplar PRE and POST spectra.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2562088&req=5

Figure 1: Exemplar PRE and POST spectra.
Mentions: Walking caused a depletion of [PCr] and an accumulation of [Pi] (Figure 1) which resulted in an increased [Pi]/[PCr] with walking (Table 1). The increases in [Pi]/[PCr] from PRE to POST were similar in PF and H.

View Article: PubMed Central - HTML

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

Phosphorus magnetic resonance spectroscopy (P MRS) has shown that the ratio of inorganic phosphate to phosphocreatine ([Pi]/[PCr]) within a muscle increases proportionately with muscle work at low to moderate levels... A 4-Tesla MRS system (Bruker, Germany) was used to obtain concentrations of [PCr] and [Pi] before (PRE) and after (POST) walking... Pi and PCr peaks were integrated and [Pi]/[PCr] was calculated... Walking caused a depletion of [PCr] and an accumulation of [Pi] (Figure 1) which resulted in an increased [Pi]/[PCr] with walking (Table 1)... The increases in [Pi]/[PCr] from PRE to POST were similar in PF and H... In this novel approach to the study of intrinsic foot muscles, we used MRS to measure metabolic activity non-invasively and in vivo... The data showed that walking caused an increased use of ATP in the intrinsic foot muscles, indicating that these muscles were activated to produce force along the plantar aspect of the foot... Although increases in [Pi]/[PCr] of PF and H were similar, more information is required to conclude that both feet performed equal force output... Subsequent studies will examine whether there is PF and H asymmetry in forefoot-rearfoot kinematics, muscle size and mitochondrial function.

No MeSH data available.