Jakeman 2009.
| Methods | Randomised controlled trial | |
| Participants | N = 18 healthy females, mean age 19.9 (SE 0.97) | |
| Interventions | CWI (n = 9): Seated immersion to iliac crest in 10°C water, for 10 minutes Passive (n = 9): Seated rest |
|
| Outcomes |
Pain
Leg soreness during unweighted squat (10 cm visual analogue scale, 0 "no pain" to 10 "worst pain ever") Strength Concentric knee extension (isokinetic dynamometry at 45°/s, Nm) Biomarker Muscle damage (CK, U/L) (Follow‐up: 1 (immediate), 24, 48, 72 and 96 hours after exercise) |
|
| Exercise type / intensity | 10 counter movement jumps x 10, adopting a 90 degree knee angle on each landing | |
| Time between completing exercise and initiating intervention | Within 10 minutes | |
| Participants' fitness level | Not engaged in any specific plyometric or lower limb training 6 weeks prior to testing | |
| Notes | Data for pain, strength and biomarkers obtained after personal correspondence (converted from SE to SD) | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Low risk | 'randomly allocated to a control or treatment group' (Methods, participants and design, pg. 457) participants randomised using a predetermined sequence generation (personal correspondence) |
| Allocation concealment (selection bias) | Unclear risk | No details in manuscript Likely with predetermined sequence generation Not confirmed after personal correspondence |
| Blinding (performance bias and detection bias) Participants | High risk | No blinding. |
| Blinding (performance bias and detection bias) Personnel | High risk | No blinding. |
| Blinding (performance bias and detection bias) Outcome assessors | High risk | No details in manuscript No (personal correspondence) |
| Incomplete outcome data (attrition bias) All outcomes | Low risk | No details in manuscript All participants received intervention as allocation and there was no missing data (personal correspondence) |
| Selective reporting (reporting bias) | Low risk | No published protocol available Outcomes and follow‐ups stated in methods Means and SD/SE presented (graphically) by intervention group for all outcomes, at all follow‐ups |
| Other bias | Unclear risk | Exercise protocol is clearly described Few details on the control intervention within the manuscript |