Translational Sports Medicine

Research Article

Longitudinal Monitoring of Biomechanical and Psychological State in Collegiate Female Basketball Athletes Using Principal Component Analysis

Table 1

Descriptive statistics of biomechanical and psychological state metrics stratified by study year.


Measure	Study year 2021-2022		Study year 2022-2023
Measure	Mean	SD	Mean	SD

Total impact load (sum of steps at each intensity in g’s)	72,150	25,766	83,873	33,751
Total step count	6004	1199	6705	1549
Ave. intensity (g)	11.83	2.72	12.30	3.37
Impact Asym. (%)	4.32	3.36	3.77	3.36
Low-G Asym. (%)	2.02	2.0	1.86	1.57
Medium-G Asym. (%)	3.77	2.86	3.13	2.60
High-G Asym. (%)	7.27	5.44	6.57	5.97
Jump height (m)	0.24	0.05	0.26	0.05
CMD (m)	−0.28	0.04	−0.28	0.04
Time to takeoff (s)	0.84	0.11	0.79	0.10
Pk Rel. Brk power (W/kg)	−13.84	3.19	−14.51	2.99
Pk Rel. Prop power (W/kg)	39.90	5.03	41.91	5.74
Pk Brk force Asym. (%)	5.58	4.88	5.43	4.12
Pk Prop force Asym. (%)	3.74	3.11	3.70	3.07
Ave. Brk RFD Asym. (%)	9.69	8.03	8.81	6.53
Pk Lnd force Asym. (%)	11.24	9.34	9.70	10.17
RSI Mod. (JH/contact time)	0.29	0.06	0.33	0.08
Academic workload (0–10)	5.85	1.84	5.28	2.38
Feeling (0–10)	6.36	1.52	5.88	1.60
Sleep quantity–PSQI component 3 (0–3)	N/A	N/A	0.58	0.74
Sleep quality–PSQI component 1 (0–3)	N/A	N/A	0.99	0.75
Pain (0–10)	2.99	1.50	1.36	1.69

SD = standard deviation; Ave. = average; Asym. = asymmetry; CMD = countermovement depth; Pk = peak; Rel. = relative; Brk = braking; Prop = propulsive; RFD = rate of force development; Lnd = landing; RSI Mod. = the modified reactive strength index; PSQI = Pittsburgh sleep quality index. Note. Asymmetry metrics computed as absolute values to demonstrate the within- and between-season variability in the magnitude of asymmetry across a team but is blinded to the nuances of fluctuations in limb dominance in doing so. Sleep quantity and quality collected too inconsistently in season one to report and provide between-season comparisons. Higher scores in feeling represent better mental health, while higher scores in academic workload and pain represent a greater workload and level of perceived pain, respectively. Lower scores on sleep scales represent greater sleep quality and quantity.