Muscle Contribution Report - dataset-1_walk_childish_001(1)

Method and Interpretation Boundary

Note: These values are motion-derived muscle-contribution proxies inferred from kinematic channels. They are not EMG measurements. Peak values are used only to locate timing events; report comparison focuses on mean contribution and duty duration because summary peak values can saturate.

Input Artifacts

• Take: dataset-1_walk_childish_001(1)
• Subject frames: 140
• Baseline frames: 140
• Protocol: gait_muscle_sequence

Muscle Sequence Analysis

Gait muscle timing is cycle-aware: M markers are generated inside final refined IC→TO→IC gait cycles.

• Cycles analysed: 7
• Cycle-aware M markers found: 56
• Previous global-marker comparison count: 20

Cycle marker summary

• LLEG_0: IC 0, TO 21, next IC 37; M1 SPINE pec L @ 0.0% of cycle (IC-next IC); M2 SPINE abs @ 18.9% of cycle (IC-next IC); M3 HEAD neck flex @ 21.6% of cycle (IC-next IC); M4 SPINE pec R @ 48.6% of cycle (IC-next IC); M5 LLEG calf @ 56.8% of cycle (IC-next IC)
• RLEG_0: IC 20, TO 40, next IC 54; M7 SPINE erector @ 8.8% of cycle (IC-next IC); M8 SPINE erector @ 8.8% of cycle (IC-next IC); M10 HEAD neck ext @ 11.8% of cycle (IC-next IC); M12 RLEG quad @ 58.8% of cycle (IC-next IC); M15 SPINE abs @ 61.8% of cycle (IC-next IC)
• LLEG_1: IC 37, TO 56, next IC 71; M13 SPINE abs @ 11.8% of cycle (IC-next IC); M14 SPINE abs @ 11.8% of cycle (IC-next IC); M17 HEAD neck flex @ 14.7% of cycle (IC-next IC); M20 SPINE pec R @ 47.1% of cycle (IC-next IC); M21 LLEG calf @ 55.9% of cycle (IC-next IC)
• RLEG_1: IC 54, TO 73, next IC 88; M24 HEAD neck ext @ 14.7% of cycle (IC-next IC); M25 SPINE erector @ 14.7% of cycle (IC-next IC); M26 SPINE erector @ 14.7% of cycle (IC-next IC); M28 RLEG calf @ 58.8% of cycle (IC-next IC); M30 SPINE abs @ 61.8% of cycle (IC-next IC)
• LLEG_2: IC 71, TO 89, next IC 105; M29 SPINE abs @ 11.8% of cycle (IC-next IC); M32 HEAD neck flex @ 14.7% of cycle (IC-next IC); M35 LLEG calf @ 52.9% of cycle (IC-next IC); M36 SPINE erector @ 61.8% of cycle (IC-next IC); M37 SPINE erector @ 61.8% of cycle (IC-next IC)
• RLEG_2: IC 88, TO 107, next IC 122; M39 HEAD neck ext @ 14.7% of cycle (IC-next IC); M44 SPINE abs @ 50.0% of cycle (IC-next IC); M46 SPINE erector @ 55.9% of cycle (IC-next IC); M47 RLEG calf @ 55.9% of cycle (IC-next IC); M48 SPINE erector @ 55.9% of cycle (IC-next IC)
• LLEG_3: IC 105, TO 123, next IC 139; M42 SPINE abs @ 0.0% of cycle (IC-next IC); M43 SPINE abs @ 0.0% of cycle (IC-next IC); M45 SPINE erector @ 5.9% of cycle (IC-next IC); M50 HEAD neck flex @ 14.7% of cycle (IC-next IC); M52 SPINE pec R @ 44.1% of cycle (IC-next IC)

Cycle consistency summary

• LLEG Left Leg / LLEG calf: 4 cycles, mean 66.4% of cycle (IC-next IC), range 47.1 cycle-%
• LLEG Left Leg / LLEG hamstring: 3 cycles, mean 76.9% of cycle (IC-next IC), range 13.2 cycle-%
• LLEG Neck / Head / HEAD neck ext: 4 cycles, mean 64.7% of cycle (IC-next IC), range 0.2 cycle-%
• LLEG Neck / Head / HEAD neck flex: 4 cycles, mean 16.4% of cycle (IC-next IC), range 6.9 cycle-%
• LLEG Pelvis / Trunk / SPINE pec R: 3 cycles, mean 46.6% of cycle (IC-next IC), range 4.5 cycle-%
• LLEG Pelvis / Trunk / SPINE abs: 2 cycles, mean 5.9% of cycle (IC-next IC), range 11.8 cycle-%
• LLEG Pelvis / Trunk / SPINE pec L: 2 cycles, mean 45.6% of cycle (IC-next IC), range 91.2 cycle-%
• LLEG Spine / SPINE abs: 4 cycles, mean 10.6% of cycle (IC-next IC), range 18.9 cycle-%
• LLEG Spine / SPINE erector: 4 cycles, mean 48.6% of cycle (IC-next IC), range 58.8 cycle-%
• RLEG Neck / Head / HEAD neck ext: 3 cycles, mean 13.7% of cycle (IC-next IC), range 2.9 cycle-%

Baseline cycle timing comparison

• Mean absolute cycle timing shift: 12.3 cycle-%
• Largest cycle timing shift: SPINE abs -88.2 cycle-% (LLEG_1)

Gait muscle timing is evaluated relative to IC/TO events, stance/swing transitions, stabilisation patterns, and asymmetry rather than as one linear chain.

Protocol-defined gait sequence observations

• Model: Gait event-relative timing model

Baseline Comparison

The comparison below uses summary-level mean and duty proxy values.

Most meaningful baseline differences

• Left Leg: mean -40.1%, duty >50% -30.0pp
• Spine: mean -35.4%, duty >50% -13.2pp
• Right Leg: mean -22.3%, duty >50% -13.3pp
• Pelvis / Trunk: mean -16.9%, duty >50% -6.1pp

Mean contribution comparison

• Left Leg: subject=0.33, baseline=0.56, delta=-40.1%
• Spine: subject=0.31, baseline=0.49, delta=-35.4%
• Right Leg: subject=0.33, baseline=0.43, delta=-22.3%
• Pelvis / Trunk: subject=0.31, baseline=0.38, delta=-16.9%

Duty >50% duration comparison

• Left Leg: subject=31.4%, baseline=61.4%, delta=-30.0pp
• Right Leg: subject=31.7%, baseline=45.0%, delta=-13.3pp
• Spine: subject=28.9%, baseline=42.1%, delta=-13.2pp
• Pelvis / Trunk: subject=28.9%, baseline=35.0%, delta=-6.1pp

Largest individual mean/duty shifts

• RFINGER deltoid: mean -32.8%, duty >50% -38.6pp
• LARM forearm flex: mean -24.7%, duty >50% -9.3pp
• LFINGER forearm flex: mean -24.7%, duty >50% -9.3pp
• SPINE oblique: mean -23.9%, duty >50% -10.0pp
• LFINGER deltoid: mean -14.8%, duty >50% -12.1pp
• RFINGER pec: mean -18.8%, duty >50% -7.9pp
• LTOE glute: mean +20.3%, duty >50% +5.0pp
• LLEG glute: mean -7.5%, duty >50% -12.9pp

Individual Muscle Proxy Summary

Top mean contributors

• LARM deltoid: mean=0.53, duty >50%=53.6%
• RARM deltoid: mean=0.53, duty >50%=53.6%
• LLEG glute: mean=0.52, duty >50%=48.6%
• RLEG glute: mean=0.52, duty >50%=48.6%
• RTOE glute: mean=0.52, duty >50%=48.6%
• LFINGER deltoid: mean=0.51, duty >50%=53.6%
• RFINGER deltoid: mean=0.42, duty >50%=28.6%
• SPINE oblique: mean=0.37, duty >50%=32.1%
• LTOE glute: mean=0.36, duty >50%=20.0%
• LARM forearm flex: mean=0.28, duty >50%=20.7%

Highest duty contributors

• LARM deltoid: mean=0.53, duty >50%=53.6%
• RARM deltoid: mean=0.53, duty >50%=53.6%
• LFINGER deltoid: mean=0.51, duty >50%=53.6%
• LLEG glute: mean=0.52, duty >50%=48.6%
• RLEG glute: mean=0.52, duty >50%=48.6%
• RTOE glute: mean=0.52, duty >50%=48.6%
• SPINE oblique: mean=0.37, duty >50%=32.1%
• RFINGER deltoid: mean=0.42, duty >50%=28.6%
• RFINGER pec: mean=0.27, duty >50%=27.9%
• SPINE erector: mean=0.26, duty >50%=25.7%

Protocol group summary

• Left Leg: mean=0.33, duty >50%=31.4%
• Right Leg: mean=0.33, duty >50%=31.7%
• Pelvis / Trunk: mean=0.31, duty >50%=28.9%
• Spine: mean=0.31, duty >50%=28.9%

Protocol-defined predicted/observed sequence observations

• Model: Gait event-relative timing model
  • Anchor events: IC / TO
  • Expected groups: Left Leg -> Right Leg -> Pelvis / Trunk -> Spine -> Neck / Head
  • Expected relationships: left/right alternation; stance/swing relation; trunk/head stabilisation; mean/duty asymmetry
  • Observed full-take group order:
    • Frame 0 / 0.0% take: Pelvis / Trunk
    • Frame 7 / 5.0% take: Spine
    • Frame 8 / 5.8% take: Neck / Head
    • Frame 18 / 12.9% take: Pelvis / Trunk
    • Frame 21 / 15.1% take: Left Leg
    • Frame 23 / 16.5% take: Spine, Pelvis / Trunk
    • Frame 24 / 17.3% take: Neck / Head
    • Frame 31 / 22.3% take: Left Leg
    • Frame 40 / 28.8% take: Right Leg
    • Frame 41 / 29.5% take: Pelvis / Trunk, Spine
    • Frame 42 / 30.2% take: Neck / Head
    • Frame 49 / 35.3% take: Right Leg
    • Frame 53 / 38.1% take: Pelvis / Trunk
    • Frame 56 / 40.3% take: Left Leg
    • Frame 59 / 42.4% take: Neck / Head, Spine, Pelvis / Trunk
    • Frame 63 / 45.3% take: Left Leg
    • Frame 74 / 53.2% take: Right Leg
    • 16 additional frame groups summarized in JSON
  • Observed cycle-relative group order:
    • LLEG_0: Pelvis / Trunk 0.0% of cycle (IC-next IC) -> Spine 18.9% of cycle (IC-next IC) -> Neck / Head 21.6% of cycle (IC-next IC) -> Left Leg 56.8% of cycle (IC-next IC)
    • LLEG_1: Pelvis / Trunk 11.8% of cycle (IC-next IC) -> Spine 11.8% of cycle (IC-next IC) -> Neck / Head 14.7% of cycle (IC-next IC) -> Left Leg 55.9% of cycle (IC-next IC)
    • LLEG_2: Spine 11.8% of cycle (IC-next IC) -> Neck / Head 14.7% of cycle (IC-next IC) -> Left Leg 52.9% of cycle (IC-next IC) -> Pelvis / Trunk 61.8% of cycle (IC-next IC)
    • LLEG_3: Pelvis / Trunk 0.0% of cycle (IC-next IC) -> Spine 0.0% of cycle (IC-next IC) -> Neck / Head 14.7% of cycle (IC-next IC) -> Left Leg 55.9% of cycle (IC-next IC)
    • RLEG_0: Pelvis / Trunk 8.8% of cycle (IC-next IC) -> Spine 8.8% of cycle (IC-next IC) -> Neck / Head 11.8% of cycle (IC-next IC) -> Right Leg 58.8% of cycle (IC-next IC)
    • RLEG_1: Neck / Head 14.7% of cycle (IC-next IC) -> Pelvis / Trunk 14.7% of cycle (IC-next IC) -> Spine 14.7% of cycle (IC-next IC) -> Right Leg 58.8% of cycle (IC-next IC)
    • RLEG_2: Neck / Head 14.7% of cycle (IC-next IC) -> Spine 50.0% of cycle (IC-next IC) -> Pelvis / Trunk 55.9% of cycle (IC-next IC) -> Right Leg 55.9% of cycle (IC-next IC)
  • Score: observation-only model; no correctness score is emitted for this protocol.