Background
Methods
Participants
MIPS (
n
= 10)
|
CON (
n
= 10)
| |
---|---|---|
Age (yrs) | 24 ± 5 | 30 ± 10 |
Height (cm) | 178.3 ± 5.6 | 181.9 ± 7.5 |
Body Mass (kg) | 72.4 ± 8.3 | 74.4 ± 6.3 |
Body Fat (%) | 9.2 ± 2.6 | 10.3 ± 3.1 |
VO2max (ml/kg/min) | 61.7 ± 5.3 | 61.4 ± 4.9 |
Treatment
Experimental overview
Measures
Downhill running protocol
Statistical analysis
Results
Delayed onset muscle soreness
Variable
|
Group
|
Pre DHR (day 0)
|
POST (day 0)
|
24 hr post
|
48 hr post
|
72 hr post
|
---|---|---|---|---|---|---|
Gastrocnemius | MIPS (n = 9) | 15.7 ± 20.7 | 18.3 ± 19.8 | 17.7 ± 21.4 | 12.8 ± 21.1c
| 13.1 ± 17.4c
|
CON (n = 10) | 9.3 ± 9.7 | 10.6 ± 10.6 | 16.1 ± 13.1 | 11.4 ± 9.7c
| 13.0 ± 14.9c
| |
Rectus Femoris* | MIPS (n = 9) | 11.2 ± 18.5 | 14.7 ± 14.5 | 19.4 ± 15.0abde
| 14.7 ± 15.5e
| 8.5 ± 10.1b
|
CON (n = 10) | 10.3 ± 9.0 | 14.7 ± 9.6 | 26.1 ± 18.0abde
| 15.8 ± 14.6e
| 13.5 ± 11.1b
| |
Vastus Lateralis* | MIPS (n = 8) | 6.6 ± 10.6 | 16.0 ± 15.3a
| 21.8 ± 19.6ab
| 17.2 ± 17.3a
| 16.7 ± 21.2a
|
CON (n = 10) | 8.2 ± 5.8 | 14.0 ± 11.2a
| 19.9 ± 15.6ab
| 19.4 ± 15.7a
| 11.1 ± 7.9a
| |
Vastus Medialis* | MIPS (n = 8) | 11.0 ± 14.3 | 24.6 ± 19.7a
| 34.3 ± 24.8abde
| 20.7 ± 24.8 | 16.6 ± 20.9 |
CON (n = 10) | 12.6 ± 10.0 | 16.6 ± 12.3a
| 26.5 ± 21.0abde
| 21.4 ± 16.9 | 17.0 ± 13.8 | |
Biceps Femoris* | MIPS (n = 9) | 7.3 ± 12.8 | 9.45 ± 11.7a
| 21.5 ± 17.5abe
| 11.7 ± 17.8a
| 12.1 ± 14.6a
|
CON (n = 10) | 5.0 ± 4.0 | 10.2 ± 9.4a
| 19.2 ± 18.9abe
| 13.3 ± 12.0a
| 7.9 ± 9.8a
| |
Gluteus Maximus* | MIPS (n = 9) | 6.5 ± 10.2 | 13.6 ± 16.9a
| 20.2 ± 21.3a
| 13.2 ± 19.3a
| 8.5 ± 14.5 |
CON (n = 10) | 6.3 ± 6.5 | 9.0 ± 8.6a
| 10.8 ± 11.7a
| 6.6 ± 6.7a
| 8.2 ± 7.7 | |
Mean Muscle Soreness* | MIPS (n = 7) | 66.3 ± 88.1 | 110.9 ± 97.1a
| 153.3 ± 104.4abde
| 105.9 ± 106.6a
| 88.6 ± 100.6 |
CON (n = 8) | 55.3 ± 40.3 | 74.1 ± 58.6a
| 114.6 ± 90.5abde
| 86.6 ± 73.3a
| 74.4 ± 63.2 |
Performance measurements
Variable
|
Group
|
Pre DHR (day 0)
|
POST (day 0)
|
24 hr post
|
48 hr post
|
72 hr post
|
---|---|---|---|---|---|---|
MVC Extension (60°) (N · m)* | MIPS | 207 ± 52 | 185 ± 40 | 199 ± 58b
| 210 ± 49b
| 217 ± 37bcd
|
CON | 196 ± 58 | 184 ± 50 | 200 ± 58b
| 205 ± 59b
| 221 ± 64bcd
| |
MVC Flexion (60°) (N · m)* | MIPS | 116 ± 36b
| 107 ± 31 | 109 ± 33b
| 117 ± 34b
| 118 ± 26bc
|
CON | 109 ± 30b
| 99 ± 27 | 108 ± 30b
| 108 ± 28b
| 113 ± 33bc
| |
Maximal Isokinetic Extension (180°/sec) (N · m)* | MIPS | 149 ± 22c
| 149 ± 23 | 140 ± 20a
| 151 ± 19c
| 152 ± 18c
|
CON | 143 ± 27c
| 139 ± 18 | 136 ± 26a
| 140 ± 28c
| 145 ± 32c
| |
Maximal Isokinetic Flexion (180°/sec) (N · m)* | MIPS | 78 ± 17 | 77 ± 19 | 78 ± 16 | 81 ± 17ab
| 81 ± 18ab
|
CON | 70 ± 22 | 72 ± 19 | 79 ± 17 | 80 ± 20ab
| 82 ± 23ab
| |
ROM (cm)* | MIPS | 25.1 ± 11.7c
| 25.8 ± 11.3c
| 23.6 ± 12.6a
| 25.7 ± 11.4c
| 25.5 ± 11.3c
|
CON | 20.3 ± 10.6c
| 21.2 ± 10.4c
| 19.6 ± 10.5 | 19.3 ± 10.1 | 20.1 ± 10.4c
| |
Vertical Jump (cm)* | MIPS | 51.3 ± 7.3c
| 52.3 ± 6.6c
| 50.0 ± 18.0 | 50.0 ± 6.6bc
| 51.0 ± 7.1cd
|
CON | 50.0 ± 14.7c
| 50.2 ± 14.2c
| 47.4 ± 13.4 | 49.0 ± 13.9bc
| 50.0 ± 13.7cd
|