Table 2.

Fiber Type Cross-Sectional Area, μm².

	Superficial		Deep
Group	MyHC-IIa	MyHC-IIb	MyHC-I	MyHC-IIa	MyHC-IIb
CA2	1455±198	3614±510	1755±228	2127±204	4048±365
CA2IBU	1476±229	3440±418	1653±228	2018±367	3807±925
EX2	1611±166	3848±547	1769±190	2220±196	4056±617
EX2IBU	1499±172	a2985±342	2101±475	2459±619	3475±753
CA8	1845±180	4225±485	2069±333	2783±481	4552±658
CA8IBU	b1585±191	4048±495	2105±442	2600±531	4441±512
EX8	1890±304	4669±415	2083±357	2720±291	5088±349
EX8IBU	1824±211	4333±751	2029±472	2613±606	4685±1275

Superficial and deep regions of the supraspinatus muscle were analyzed separately for fiber type cross-sectional area. The superficial region had no MyHC-I staining. (n=5–9 at 2 weeks, n=6–7 at 8 weeks) Mean ± StDev, superscript indicates ibuprofen had a significant effect (p<0.05) compared to corresponding non-drug treated group:

^ap=0.003,

^bp=0.02